3277 lines
84 KiB
C
3277 lines
84 KiB
C
/* $NetBSD: parse.c,v 1.206 2015/11/26 00:23:04 sjg Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef MAKE_NATIVE
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static char rcsid[] = "$NetBSD: parse.c,v 1.206 2015/11/26 00:23:04 sjg Exp $";
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#else
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
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#else
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__RCSID("$NetBSD: parse.c,v 1.206 2015/11/26 00:23:04 sjg Exp $");
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#endif
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#endif /* not lint */
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#endif
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/*-
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* parse.c --
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* Functions to parse a makefile.
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*
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* One function, Parse_Init, must be called before any functions
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* in this module are used. After that, the function Parse_File is the
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* main entry point and controls most of the other functions in this
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* module.
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*
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* Most important structures are kept in Lsts. Directories for
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* the .include "..." function are kept in the 'parseIncPath' Lst, while
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* those for the .include <...> are kept in the 'sysIncPath' Lst. The
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* targets currently being defined are kept in the 'targets' Lst.
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*
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* The variables 'fname' and 'lineno' are used to track the name
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* of the current file and the line number in that file so that error
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* messages can be more meaningful.
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*
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* Interface:
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* Parse_Init Initialization function which must be
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* called before anything else in this module
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* is used.
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*
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* Parse_End Cleanup the module
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*
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* Parse_File Function used to parse a makefile. It must
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* be given the name of the file, which should
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* already have been opened, and a function
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* to call to read a character from the file.
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*
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* Parse_IsVar Returns TRUE if the given line is a
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* variable assignment. Used by MainParseArgs
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* to determine if an argument is a target
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* or a variable assignment. Used internally
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* for pretty much the same thing...
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*
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* Parse_Error Function called when an error occurs in
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* parsing. Used by the variable and
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* conditional modules.
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* Parse_MainName Returns a Lst of the main target to create.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include "make.h"
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#include "hash.h"
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#include "dir.h"
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#include "job.h"
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#include "buf.h"
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#include "pathnames.h"
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#ifdef HAVE_MMAP
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#include <sys/mman.h>
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#ifndef MAP_COPY
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#define MAP_COPY MAP_PRIVATE
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#endif
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#ifndef MAP_FILE
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#define MAP_FILE 0
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#endif
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#endif
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////////////////////////////////////////////////////////////
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// types and constants
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/*
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* Structure for a file being read ("included file")
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*/
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typedef struct IFile {
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char *fname; /* name of file */
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int lineno; /* current line number in file */
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int first_lineno; /* line number of start of text */
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int cond_depth; /* 'if' nesting when file opened */
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char *P_str; /* point to base of string buffer */
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char *P_ptr; /* point to next char of string buffer */
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char *P_end; /* point to the end of string buffer */
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char *(*nextbuf)(void *, size_t *); /* Function to get more data */
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void *nextbuf_arg; /* Opaque arg for nextbuf() */
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struct loadedfile *lf; /* loadedfile object, if any */
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} IFile;
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/*
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* These values are returned by ParseEOF to tell Parse_File whether to
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* CONTINUE parsing, i.e. it had only reached the end of an include file,
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* or if it's DONE.
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*/
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#define CONTINUE 1
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#define DONE 0
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/*
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* Tokens for target attributes
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*/
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typedef enum {
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Begin, /* .BEGIN */
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Default, /* .DEFAULT */
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End, /* .END */
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dotError, /* .ERROR */
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Ignore, /* .IGNORE */
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Includes, /* .INCLUDES */
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Interrupt, /* .INTERRUPT */
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Libs, /* .LIBS */
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Meta, /* .META */
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MFlags, /* .MFLAGS or .MAKEFLAGS */
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Main, /* .MAIN and we don't have anything user-specified to
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* make */
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NoExport, /* .NOEXPORT */
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NoMeta, /* .NOMETA */
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NoMetaCmp, /* .NOMETA_CMP */
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NoPath, /* .NOPATH */
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Not, /* Not special */
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NotParallel, /* .NOTPARALLEL */
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Null, /* .NULL */
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ExObjdir, /* .OBJDIR */
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Order, /* .ORDER */
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Parallel, /* .PARALLEL */
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ExPath, /* .PATH */
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Phony, /* .PHONY */
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#ifdef POSIX
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Posix, /* .POSIX */
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#endif
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Precious, /* .PRECIOUS */
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ExShell, /* .SHELL */
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Silent, /* .SILENT */
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SingleShell, /* .SINGLESHELL */
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Stale, /* .STALE */
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Suffixes, /* .SUFFIXES */
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Wait, /* .WAIT */
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Attribute /* Generic attribute */
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} ParseSpecial;
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/*
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* Other tokens
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*/
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#define LPAREN '('
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#define RPAREN ')'
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////////////////////////////////////////////////////////////
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// result data
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/*
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* The main target to create. This is the first target on the first
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* dependency line in the first makefile.
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*/
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static GNode *mainNode;
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////////////////////////////////////////////////////////////
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// eval state
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/* targets we're working on */
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static Lst targets;
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#ifdef CLEANUP
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/* command lines for targets */
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static Lst targCmds;
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#endif
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/*
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* specType contains the SPECial TYPE of the current target. It is
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* Not if the target is unspecial. If it *is* special, however, the children
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* are linked as children of the parent but not vice versa. This variable is
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* set in ParseDoDependency
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*/
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static ParseSpecial specType;
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/*
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* Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
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* seen, then set to each successive source on the line.
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*/
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static GNode *predecessor;
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////////////////////////////////////////////////////////////
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// parser state
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/* true if currently in a dependency line or its commands */
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static Boolean inLine;
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/* number of fatal errors */
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static int fatals = 0;
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/*
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* Variables for doing includes
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*/
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/* current file being read */
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static IFile *curFile;
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/* stack of IFiles generated by .includes */
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static Lst includes;
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/* include paths (lists of directories) */
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Lst parseIncPath; /* dirs for "..." includes */
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Lst sysIncPath; /* dirs for <...> includes */
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Lst defIncPath; /* default for sysIncPath */
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////////////////////////////////////////////////////////////
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// parser tables
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/*
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* The parseKeywords table is searched using binary search when deciding
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* if a target or source is special. The 'spec' field is the ParseSpecial
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* type of the keyword ("Not" if the keyword isn't special as a target) while
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* the 'op' field is the operator to apply to the list of targets if the
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* keyword is used as a source ("0" if the keyword isn't special as a source)
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*/
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static const struct {
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const char *name; /* Name of keyword */
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ParseSpecial spec; /* Type when used as a target */
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int op; /* Operator when used as a source */
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} parseKeywords[] = {
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{ ".BEGIN", Begin, 0 },
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{ ".DEFAULT", Default, 0 },
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{ ".END", End, 0 },
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{ ".ERROR", dotError, 0 },
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{ ".EXEC", Attribute, OP_EXEC },
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{ ".IGNORE", Ignore, OP_IGNORE },
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{ ".INCLUDES", Includes, 0 },
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{ ".INTERRUPT", Interrupt, 0 },
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{ ".INVISIBLE", Attribute, OP_INVISIBLE },
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{ ".JOIN", Attribute, OP_JOIN },
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{ ".LIBS", Libs, 0 },
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{ ".MADE", Attribute, OP_MADE },
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{ ".MAIN", Main, 0 },
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{ ".MAKE", Attribute, OP_MAKE },
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{ ".MAKEFLAGS", MFlags, 0 },
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{ ".META", Meta, OP_META },
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{ ".MFLAGS", MFlags, 0 },
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{ ".NOMETA", NoMeta, OP_NOMETA },
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{ ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP },
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{ ".NOPATH", NoPath, OP_NOPATH },
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{ ".NOTMAIN", Attribute, OP_NOTMAIN },
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{ ".NOTPARALLEL", NotParallel, 0 },
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{ ".NO_PARALLEL", NotParallel, 0 },
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{ ".NULL", Null, 0 },
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{ ".OBJDIR", ExObjdir, 0 },
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{ ".OPTIONAL", Attribute, OP_OPTIONAL },
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{ ".ORDER", Order, 0 },
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{ ".PARALLEL", Parallel, 0 },
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{ ".PATH", ExPath, 0 },
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{ ".PHONY", Phony, OP_PHONY },
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#ifdef POSIX
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{ ".POSIX", Posix, 0 },
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#endif
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{ ".PRECIOUS", Precious, OP_PRECIOUS },
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{ ".RECURSIVE", Attribute, OP_MAKE },
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{ ".SHELL", ExShell, 0 },
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{ ".SILENT", Silent, OP_SILENT },
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{ ".SINGLESHELL", SingleShell, 0 },
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{ ".STALE", Stale, 0 },
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{ ".SUFFIXES", Suffixes, 0 },
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{ ".USE", Attribute, OP_USE },
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{ ".USEBEFORE", Attribute, OP_USEBEFORE },
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{ ".WAIT", Wait, 0 },
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};
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////////////////////////////////////////////////////////////
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// local functions
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static int ParseIsEscaped(const char *, const char *);
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static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
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MAKE_ATTR_PRINTFLIKE(4,5);
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static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
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MAKE_ATTR_PRINTFLIKE(5, 0);
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static int ParseFindKeyword(const char *);
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static int ParseLinkSrc(void *, void *);
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static int ParseDoOp(void *, void *);
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static void ParseDoSrc(int, const char *);
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static int ParseFindMain(void *, void *);
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static int ParseAddDir(void *, void *);
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static int ParseClearPath(void *, void *);
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static void ParseDoDependency(char *);
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static int ParseAddCmd(void *, void *);
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static void ParseHasCommands(void *);
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static void ParseDoInclude(char *);
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static void ParseSetParseFile(const char *);
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static void ParseSetIncludedFile(void);
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#ifdef SYSVINCLUDE
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static void ParseTraditionalInclude(char *);
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#endif
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#ifdef GMAKEEXPORT
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static void ParseGmakeExport(char *);
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#endif
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static int ParseEOF(void);
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static char *ParseReadLine(void);
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static void ParseFinishLine(void);
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static void ParseMark(GNode *);
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////////////////////////////////////////////////////////////
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// file loader
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struct loadedfile {
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const char *path; /* name, for error reports */
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char *buf; /* contents buffer */
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size_t len; /* length of contents */
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size_t maplen; /* length of mmap area, or 0 */
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Boolean used; /* XXX: have we used the data yet */
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};
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/*
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* Constructor/destructor for loadedfile
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*/
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static struct loadedfile *
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loadedfile_create(const char *path)
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{
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struct loadedfile *lf;
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lf = bmake_malloc(sizeof(*lf));
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lf->path = (path == NULL ? "(stdin)" : path);
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lf->buf = NULL;
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lf->len = 0;
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lf->maplen = 0;
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lf->used = FALSE;
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return lf;
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}
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static void
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loadedfile_destroy(struct loadedfile *lf)
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{
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if (lf->buf != NULL) {
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if (lf->maplen > 0) {
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#ifdef HAVE_MMAP
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munmap(lf->buf, lf->maplen);
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#endif
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} else {
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free(lf->buf);
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}
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}
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free(lf);
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}
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/*
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* nextbuf() operation for loadedfile, as needed by the weird and twisted
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* logic below. Once that's cleaned up, we can get rid of lf->used...
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*/
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static char *
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loadedfile_nextbuf(void *x, size_t *len)
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{
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struct loadedfile *lf = x;
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if (lf->used) {
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return NULL;
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}
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lf->used = TRUE;
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*len = lf->len;
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return lf->buf;
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}
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/*
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* Try to get the size of a file.
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*/
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static ReturnStatus
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load_getsize(int fd, size_t *ret)
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{
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struct stat st;
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if (fstat(fd, &st) < 0) {
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return FAILURE;
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}
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|
if (!S_ISREG(st.st_mode)) {
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return FAILURE;
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}
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|
|
/*
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|
* st_size is an off_t, which is 64 bits signed; *ret is
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* size_t, which might be 32 bits unsigned or 64 bits
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* unsigned. Rather than being elaborate, just punt on
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* files that are more than 2^31 bytes. We should never
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* see a makefile that size in practice...
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*
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* While we're at it reject negative sizes too, just in case.
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*/
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|
if (st.st_size < 0 || st.st_size > 0x7fffffff) {
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return FAILURE;
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}
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*ret = (size_t) st.st_size;
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return SUCCESS;
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}
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|
|
/*
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|
* Read in a file.
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|
*
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|
* Until the path search logic can be moved under here instead of
|
|
* being in the caller in another source file, we need to have the fd
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* passed in already open. Bleh.
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*
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* If the path is NULL use stdin and (to insure against fd leaks)
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* assert that the caller passed in -1.
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*/
|
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static struct loadedfile *
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loadfile(const char *path, int fd)
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{
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struct loadedfile *lf;
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#ifdef HAVE_MMAP
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|
long pagesize;
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|
#endif
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|
ssize_t result;
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size_t bufpos;
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lf = loadedfile_create(path);
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if (path == NULL) {
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assert(fd == -1);
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fd = STDIN_FILENO;
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} else {
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|
#if 0 /* notyet */
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fd = open(path, O_RDONLY);
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if (fd < 0) {
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...
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Error("%s: %s", path, strerror(errno));
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exit(1);
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}
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#endif
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}
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|
#ifdef HAVE_MMAP
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|
if (load_getsize(fd, &lf->len) == SUCCESS) {
|
|
/* found a size, try mmap */
|
|
#ifdef _SC_PAGESIZE
|
|
pagesize = sysconf(_SC_PAGESIZE);
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|
#else
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pagesize = 0;
|
|
#endif
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|
if (pagesize <= 0) {
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pagesize = 0x1000;
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}
|
|
/* round size up to a page */
|
|
lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize);
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|
|
/*
|
|
* XXX hack for dealing with empty files; remove when
|
|
* we're no longer limited by interfacing to the old
|
|
* logic elsewhere in this file.
|
|
*/
|
|
if (lf->maplen == 0) {
|
|
lf->maplen = pagesize;
|
|
}
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|
|
|
/*
|
|
* FUTURE: remove PROT_WRITE when the parser no longer
|
|
* needs to scribble on the input.
|
|
*/
|
|
lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE,
|
|
MAP_FILE|MAP_COPY, fd, 0);
|
|
if (lf->buf != MAP_FAILED) {
|
|
/* succeeded */
|
|
if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') {
|
|
char *b = malloc(lf->len + 1);
|
|
b[lf->len] = '\n';
|
|
memcpy(b, lf->buf, lf->len++);
|
|
munmap(lf->buf, lf->maplen);
|
|
lf->maplen = 0;
|
|
lf->buf = b;
|
|
}
|
|
goto done;
|
|
}
|
|
}
|
|
#endif
|
|
/* cannot mmap; load the traditional way */
|
|
|
|
lf->maplen = 0;
|
|
lf->len = 1024;
|
|
lf->buf = bmake_malloc(lf->len);
|
|
|
|
bufpos = 0;
|
|
while (1) {
|
|
assert(bufpos <= lf->len);
|
|
if (bufpos == lf->len) {
|
|
lf->len *= 2;
|
|
lf->buf = bmake_realloc(lf->buf, lf->len);
|
|
}
|
|
result = read(fd, lf->buf + bufpos, lf->len - bufpos);
|
|
if (result < 0) {
|
|
Error("%s: read error: %s", path, strerror(errno));
|
|
exit(1);
|
|
}
|
|
if (result == 0) {
|
|
break;
|
|
}
|
|
bufpos += result;
|
|
}
|
|
assert(bufpos <= lf->len);
|
|
lf->len = bufpos;
|
|
|
|
/* truncate malloc region to actual length (maybe not useful) */
|
|
if (lf->len > 0) {
|
|
lf->buf = bmake_realloc(lf->buf, lf->len);
|
|
}
|
|
|
|
#ifdef HAVE_MMAP
|
|
done:
|
|
#endif
|
|
if (path != NULL) {
|
|
close(fd);
|
|
}
|
|
return lf;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////
|
|
// old code
|
|
|
|
/*-
|
|
*----------------------------------------------------------------------
|
|
* ParseIsEscaped --
|
|
* Check if the current character is escaped on the current line
|
|
*
|
|
* Results:
|
|
* 0 if the character is not backslash escaped, 1 otherwise
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseIsEscaped(const char *line, const char *c)
|
|
{
|
|
int active = 0;
|
|
for (;;) {
|
|
if (line == c)
|
|
return active;
|
|
if (*--c != '\\')
|
|
return active;
|
|
active = !active;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*----------------------------------------------------------------------
|
|
* ParseFindKeyword --
|
|
* Look in the table of keywords for one matching the given string.
|
|
*
|
|
* Input:
|
|
* str String to find
|
|
*
|
|
* Results:
|
|
* The index of the keyword, or -1 if it isn't there.
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseFindKeyword(const char *str)
|
|
{
|
|
int start, end, cur;
|
|
int diff;
|
|
|
|
start = 0;
|
|
end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
|
|
|
|
do {
|
|
cur = start + ((end - start) / 2);
|
|
diff = strcmp(str, parseKeywords[cur].name);
|
|
|
|
if (diff == 0) {
|
|
return (cur);
|
|
} else if (diff < 0) {
|
|
end = cur - 1;
|
|
} else {
|
|
start = cur + 1;
|
|
}
|
|
} while (start <= end);
|
|
return (-1);
|
|
}
|
|
|
|
/*-
|
|
* ParseVErrorInternal --
|
|
* Error message abort function for parsing. Prints out the context
|
|
* of the error (line number and file) as well as the message with
|
|
* two optional arguments.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* "fatals" is incremented if the level is PARSE_FATAL.
|
|
*/
|
|
/* VARARGS */
|
|
static void
|
|
ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
|
|
const char *fmt, va_list ap)
|
|
{
|
|
static Boolean fatal_warning_error_printed = FALSE;
|
|
|
|
(void)fprintf(f, "%s: ", progname);
|
|
|
|
if (cfname != NULL) {
|
|
(void)fprintf(f, "\"");
|
|
if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) {
|
|
char *cp;
|
|
const char *dir;
|
|
|
|
/*
|
|
* Nothing is more annoying than not knowing
|
|
* which Makefile is the culprit.
|
|
*/
|
|
dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
|
|
if (dir == NULL || *dir == '\0' ||
|
|
(*dir == '.' && dir[1] == '\0'))
|
|
dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
|
|
if (dir == NULL)
|
|
dir = ".";
|
|
|
|
(void)fprintf(f, "%s/%s", dir, cfname);
|
|
} else
|
|
(void)fprintf(f, "%s", cfname);
|
|
|
|
(void)fprintf(f, "\" line %d: ", (int)clineno);
|
|
}
|
|
if (type == PARSE_WARNING)
|
|
(void)fprintf(f, "warning: ");
|
|
(void)vfprintf(f, fmt, ap);
|
|
(void)fprintf(f, "\n");
|
|
(void)fflush(f);
|
|
if (type == PARSE_FATAL || parseWarnFatal)
|
|
fatals += 1;
|
|
if (parseWarnFatal && !fatal_warning_error_printed) {
|
|
Error("parsing warnings being treated as errors");
|
|
fatal_warning_error_printed = TRUE;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
* ParseErrorInternal --
|
|
* Error function
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*/
|
|
/* VARARGS */
|
|
static void
|
|
ParseErrorInternal(const char *cfname, size_t clineno, int type,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
(void)fflush(stdout);
|
|
ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
|
|
va_end(ap);
|
|
|
|
if (debug_file != stderr && debug_file != stdout) {
|
|
va_start(ap, fmt);
|
|
ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
* Parse_Error --
|
|
* External interface to ParseErrorInternal; uses the default filename
|
|
* Line number.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*/
|
|
/* VARARGS */
|
|
void
|
|
Parse_Error(int type, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
const char *fname;
|
|
size_t lineno;
|
|
|
|
if (curFile == NULL) {
|
|
fname = NULL;
|
|
lineno = 0;
|
|
} else {
|
|
fname = curFile->fname;
|
|
lineno = curFile->lineno;
|
|
}
|
|
|
|
va_start(ap, fmt);
|
|
(void)fflush(stdout);
|
|
ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap);
|
|
va_end(ap);
|
|
|
|
if (debug_file != stderr && debug_file != stdout) {
|
|
va_start(ap, fmt);
|
|
ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ParseMessage
|
|
* Parse a .info .warning or .error directive
|
|
*
|
|
* The input is the line minus the ".". We substitute
|
|
* variables, print the message and exit(1) (for .error) or just print
|
|
* a warning if the directive is malformed.
|
|
*/
|
|
static Boolean
|
|
ParseMessage(char *line)
|
|
{
|
|
int mtype;
|
|
|
|
switch(*line) {
|
|
case 'i':
|
|
mtype = 0;
|
|
break;
|
|
case 'w':
|
|
mtype = PARSE_WARNING;
|
|
break;
|
|
case 'e':
|
|
mtype = PARSE_FATAL;
|
|
break;
|
|
default:
|
|
Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line);
|
|
return FALSE;
|
|
}
|
|
|
|
while (isalpha((u_char)*line))
|
|
line++;
|
|
if (!isspace((u_char)*line))
|
|
return FALSE; /* not for us */
|
|
while (isspace((u_char)*line))
|
|
line++;
|
|
|
|
line = Var_Subst(NULL, line, VAR_CMD, FALSE, TRUE);
|
|
Parse_Error(mtype, "%s", line);
|
|
free(line);
|
|
|
|
if (mtype == PARSE_FATAL) {
|
|
/* Terminate immediately. */
|
|
exit(1);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseLinkSrc --
|
|
* Link the parent node to its new child. Used in a Lst_ForEach by
|
|
* ParseDoDependency. If the specType isn't 'Not', the parent
|
|
* isn't linked as a parent of the child.
|
|
*
|
|
* Input:
|
|
* pgnp The parent node
|
|
* cgpn The child node
|
|
*
|
|
* Results:
|
|
* Always = 0
|
|
*
|
|
* Side Effects:
|
|
* New elements are added to the parents list of cgn and the
|
|
* children list of cgn. the unmade field of pgn is updated
|
|
* to reflect the additional child.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseLinkSrc(void *pgnp, void *cgnp)
|
|
{
|
|
GNode *pgn = (GNode *)pgnp;
|
|
GNode *cgn = (GNode *)cgnp;
|
|
|
|
if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
|
|
pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
|
|
(void)Lst_AtEnd(pgn->children, cgn);
|
|
if (specType == Not)
|
|
(void)Lst_AtEnd(cgn->parents, pgn);
|
|
pgn->unmade += 1;
|
|
if (DEBUG(PARSE)) {
|
|
fprintf(debug_file, "# %s: added child %s - %s\n", __func__,
|
|
pgn->name, cgn->name);
|
|
Targ_PrintNode(pgn, 0);
|
|
Targ_PrintNode(cgn, 0);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoOp --
|
|
* Apply the parsed operator to the given target node. Used in a
|
|
* Lst_ForEach call by ParseDoDependency once all targets have
|
|
* been found and their operator parsed. If the previous and new
|
|
* operators are incompatible, a major error is taken.
|
|
*
|
|
* Input:
|
|
* gnp The node to which the operator is to be applied
|
|
* opp The operator to apply
|
|
*
|
|
* Results:
|
|
* Always 0
|
|
*
|
|
* Side Effects:
|
|
* The type field of the node is altered to reflect any new bits in
|
|
* the op.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseDoOp(void *gnp, void *opp)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
int op = *(int *)opp;
|
|
/*
|
|
* If the dependency mask of the operator and the node don't match and
|
|
* the node has actually had an operator applied to it before, and
|
|
* the operator actually has some dependency information in it, complain.
|
|
*/
|
|
if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
|
|
!OP_NOP(gn->type) && !OP_NOP(op))
|
|
{
|
|
Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
|
|
return (1);
|
|
}
|
|
|
|
if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
|
|
/*
|
|
* If the node was the object of a :: operator, we need to create a
|
|
* new instance of it for the children and commands on this dependency
|
|
* line. The new instance is placed on the 'cohorts' list of the
|
|
* initial one (note the initial one is not on its own cohorts list)
|
|
* and the new instance is linked to all parents of the initial
|
|
* instance.
|
|
*/
|
|
GNode *cohort;
|
|
|
|
/*
|
|
* Propagate copied bits to the initial node. They'll be propagated
|
|
* back to the rest of the cohorts later.
|
|
*/
|
|
gn->type |= op & ~OP_OPMASK;
|
|
|
|
cohort = Targ_FindNode(gn->name, TARG_NOHASH);
|
|
if (doing_depend)
|
|
ParseMark(cohort);
|
|
/*
|
|
* Make the cohort invisible as well to avoid duplicating it into
|
|
* other variables. True, parents of this target won't tend to do
|
|
* anything with their local variables, but better safe than
|
|
* sorry. (I think this is pointless now, since the relevant list
|
|
* traversals will no longer see this node anyway. -mycroft)
|
|
*/
|
|
cohort->type = op | OP_INVISIBLE;
|
|
(void)Lst_AtEnd(gn->cohorts, cohort);
|
|
cohort->centurion = gn;
|
|
gn->unmade_cohorts += 1;
|
|
snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
|
|
gn->unmade_cohorts);
|
|
} else {
|
|
/*
|
|
* We don't want to nuke any previous flags (whatever they were) so we
|
|
* just OR the new operator into the old
|
|
*/
|
|
gn->type |= op;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoSrc --
|
|
* Given the name of a source, figure out if it is an attribute
|
|
* and apply it to the targets if it is. Else decide if there is
|
|
* some attribute which should be applied *to* the source because
|
|
* of some special target and apply it if so. Otherwise, make the
|
|
* source be a child of the targets in the list 'targets'
|
|
*
|
|
* Input:
|
|
* tOp operator (if any) from special targets
|
|
* src name of the source to handle
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Operator bits may be added to the list of targets or to the source.
|
|
* The targets may have a new source added to their lists of children.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoSrc(int tOp, const char *src)
|
|
{
|
|
GNode *gn = NULL;
|
|
static int wait_number = 0;
|
|
char wait_src[16];
|
|
|
|
if (*src == '.' && isupper ((unsigned char)src[1])) {
|
|
int keywd = ParseFindKeyword(src);
|
|
if (keywd != -1) {
|
|
int op = parseKeywords[keywd].op;
|
|
if (op != 0) {
|
|
Lst_ForEach(targets, ParseDoOp, &op);
|
|
return;
|
|
}
|
|
if (parseKeywords[keywd].spec == Wait) {
|
|
/*
|
|
* We add a .WAIT node in the dependency list.
|
|
* After any dynamic dependencies (and filename globbing)
|
|
* have happened, it is given a dependency on the each
|
|
* previous child back to and previous .WAIT node.
|
|
* The next child won't be scheduled until the .WAIT node
|
|
* is built.
|
|
* We give each .WAIT node a unique name (mainly for diag).
|
|
*/
|
|
snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
|
|
gn = Targ_FindNode(wait_src, TARG_NOHASH);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
|
|
Lst_ForEach(targets, ParseLinkSrc, gn);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (specType) {
|
|
case Main:
|
|
/*
|
|
* If we have noted the existence of a .MAIN, it means we need
|
|
* to add the sources of said target to the list of things
|
|
* to create. The string 'src' is likely to be free, so we
|
|
* must make a new copy of it. Note that this will only be
|
|
* invoked if the user didn't specify a target on the command
|
|
* line. This is to allow #ifmake's to succeed, or something...
|
|
*/
|
|
(void)Lst_AtEnd(create, bmake_strdup(src));
|
|
/*
|
|
* Add the name to the .TARGETS variable as well, so the user can
|
|
* employ that, if desired.
|
|
*/
|
|
Var_Append(".TARGETS", src, VAR_GLOBAL);
|
|
return;
|
|
|
|
case Order:
|
|
/*
|
|
* Create proper predecessor/successor links between the previous
|
|
* source and the current one.
|
|
*/
|
|
gn = Targ_FindNode(src, TARG_CREATE);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
if (predecessor != NULL) {
|
|
(void)Lst_AtEnd(predecessor->order_succ, gn);
|
|
(void)Lst_AtEnd(gn->order_pred, predecessor);
|
|
if (DEBUG(PARSE)) {
|
|
fprintf(debug_file, "# %s: added Order dependency %s - %s\n",
|
|
__func__, predecessor->name, gn->name);
|
|
Targ_PrintNode(predecessor, 0);
|
|
Targ_PrintNode(gn, 0);
|
|
}
|
|
}
|
|
/*
|
|
* The current source now becomes the predecessor for the next one.
|
|
*/
|
|
predecessor = gn;
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* If the source is not an attribute, we need to find/create
|
|
* a node for it. After that we can apply any operator to it
|
|
* from a special target or link it to its parents, as
|
|
* appropriate.
|
|
*
|
|
* In the case of a source that was the object of a :: operator,
|
|
* the attribute is applied to all of its instances (as kept in
|
|
* the 'cohorts' list of the node) or all the cohorts are linked
|
|
* to all the targets.
|
|
*/
|
|
|
|
/* Find/create the 'src' node and attach to all targets */
|
|
gn = Targ_FindNode(src, TARG_CREATE);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
if (tOp) {
|
|
gn->type |= tOp;
|
|
} else {
|
|
Lst_ForEach(targets, ParseLinkSrc, gn);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseFindMain --
|
|
* Find a real target in the list and set it to be the main one.
|
|
* Called by ParseDoDependency when a main target hasn't been found
|
|
* yet.
|
|
*
|
|
* Input:
|
|
* gnp Node to examine
|
|
*
|
|
* Results:
|
|
* 0 if main not found yet, 1 if it is.
|
|
*
|
|
* Side Effects:
|
|
* mainNode is changed and Targ_SetMain is called.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseFindMain(void *gnp, void *dummy)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
if ((gn->type & OP_NOTARGET) == 0) {
|
|
mainNode = gn;
|
|
Targ_SetMain(gn);
|
|
return (dummy ? 1 : 1);
|
|
} else {
|
|
return (dummy ? 0 : 0);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseAddDir --
|
|
* Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
|
|
*
|
|
* Results:
|
|
* === 0
|
|
*
|
|
* Side Effects:
|
|
* See Dir_AddDir.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseAddDir(void *path, void *name)
|
|
{
|
|
(void)Dir_AddDir((Lst) path, (char *)name);
|
|
return(0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseClearPath --
|
|
* Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
|
|
*
|
|
* Results:
|
|
* === 0
|
|
*
|
|
* Side Effects:
|
|
* See Dir_ClearPath
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseClearPath(void *path, void *dummy)
|
|
{
|
|
Dir_ClearPath((Lst) path);
|
|
return(dummy ? 0 : 0);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoDependency --
|
|
* Parse the dependency line in line.
|
|
*
|
|
* Input:
|
|
* line the line to parse
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* The nodes of the sources are linked as children to the nodes of the
|
|
* targets. Some nodes may be created.
|
|
*
|
|
* We parse a dependency line by first extracting words from the line and
|
|
* finding nodes in the list of all targets with that name. This is done
|
|
* until a character is encountered which is an operator character. Currently
|
|
* these are only ! and :. At this point the operator is parsed and the
|
|
* pointer into the line advanced until the first source is encountered.
|
|
* The parsed operator is applied to each node in the 'targets' list,
|
|
* which is where the nodes found for the targets are kept, by means of
|
|
* the ParseDoOp function.
|
|
* The sources are read in much the same way as the targets were except
|
|
* that now they are expanded using the wildcarding scheme of the C-Shell
|
|
* and all instances of the resulting words in the list of all targets
|
|
* are found. Each of the resulting nodes is then linked to each of the
|
|
* targets as one of its children.
|
|
* Certain targets are handled specially. These are the ones detailed
|
|
* by the specType variable.
|
|
* The storing of transformation rules is also taken care of here.
|
|
* A target is recognized as a transformation rule by calling
|
|
* Suff_IsTransform. If it is a transformation rule, its node is gotten
|
|
* from the suffix module via Suff_AddTransform rather than the standard
|
|
* Targ_FindNode in the target module.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoDependency(char *line)
|
|
{
|
|
char *cp; /* our current position */
|
|
GNode *gn = NULL; /* a general purpose temporary node */
|
|
int op; /* the operator on the line */
|
|
char savec; /* a place to save a character */
|
|
Lst paths; /* List of search paths to alter when parsing
|
|
* a list of .PATH targets */
|
|
int tOp; /* operator from special target */
|
|
Lst sources; /* list of archive source names after
|
|
* expansion */
|
|
Lst curTargs; /* list of target names to be found and added
|
|
* to the targets list */
|
|
char *lstart = line;
|
|
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "ParseDoDependency(%s)\n", line);
|
|
tOp = 0;
|
|
|
|
specType = Not;
|
|
paths = NULL;
|
|
|
|
curTargs = Lst_Init(FALSE);
|
|
|
|
/*
|
|
* First, grind through the targets.
|
|
*/
|
|
|
|
do {
|
|
/*
|
|
* Here LINE points to the beginning of the next word, and
|
|
* LSTART points to the actual beginning of the line.
|
|
*/
|
|
|
|
/* Find the end of the next word. */
|
|
for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
|
|
!(isspace((unsigned char)*cp) ||
|
|
*cp == '!' || *cp == ':' || *cp == LPAREN));
|
|
cp++) {
|
|
if (*cp == '$') {
|
|
/*
|
|
* Must be a dynamic source (would have been expanded
|
|
* otherwise), so call the Var module to parse the puppy
|
|
* so we can safely advance beyond it...There should be
|
|
* no errors in this, as they would have been discovered
|
|
* in the initial Var_Subst and we wouldn't be here.
|
|
*/
|
|
int length;
|
|
void *freeIt;
|
|
|
|
(void)Var_Parse(cp, VAR_CMD, TRUE, TRUE, &length, &freeIt);
|
|
if (freeIt)
|
|
free(freeIt);
|
|
cp += length-1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the word is followed by a left parenthesis, it's the
|
|
* name of an object file inside an archive (ar file).
|
|
*/
|
|
if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
|
|
/*
|
|
* Archives must be handled specially to make sure the OP_ARCHV
|
|
* flag is set in their 'type' field, for one thing, and because
|
|
* things like "archive(file1.o file2.o file3.o)" are permissible.
|
|
* Arch_ParseArchive will set 'line' to be the first non-blank
|
|
* after the archive-spec. It creates/finds nodes for the members
|
|
* and places them on the given list, returning SUCCESS if all
|
|
* went well and FAILURE if there was an error in the
|
|
* specification. On error, line should remain untouched.
|
|
*/
|
|
if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Error in archive specification: \"%s\"", line);
|
|
goto out;
|
|
} else {
|
|
/* Done with this word; on to the next. */
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!*cp) {
|
|
/*
|
|
* We got to the end of the line while we were still
|
|
* looking at targets.
|
|
*
|
|
* Ending a dependency line without an operator is a Bozo
|
|
* no-no. As a heuristic, this is also often triggered by
|
|
* undetected conflicts from cvs/rcs merges.
|
|
*/
|
|
if ((strncmp(line, "<<<<<<", 6) == 0) ||
|
|
(strncmp(line, "======", 6) == 0) ||
|
|
(strncmp(line, ">>>>>>", 6) == 0))
|
|
Parse_Error(PARSE_FATAL,
|
|
"Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
|
|
else
|
|
Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive"
|
|
: "Need an operator");
|
|
goto out;
|
|
}
|
|
|
|
/* Insert a null terminator. */
|
|
savec = *cp;
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Got the word. See if it's a special target and if so set
|
|
* specType to match it.
|
|
*/
|
|
if (*line == '.' && isupper ((unsigned char)line[1])) {
|
|
/*
|
|
* See if the target is a special target that must have it
|
|
* or its sources handled specially.
|
|
*/
|
|
int keywd = ParseFindKeyword(line);
|
|
if (keywd != -1) {
|
|
if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
|
|
Parse_Error(PARSE_FATAL, "Mismatched special targets");
|
|
goto out;
|
|
}
|
|
|
|
specType = parseKeywords[keywd].spec;
|
|
tOp = parseKeywords[keywd].op;
|
|
|
|
/*
|
|
* Certain special targets have special semantics:
|
|
* .PATH Have to set the dirSearchPath
|
|
* variable too
|
|
* .MAIN Its sources are only used if
|
|
* nothing has been specified to
|
|
* create.
|
|
* .DEFAULT Need to create a node to hang
|
|
* commands on, but we don't want
|
|
* it in the graph, nor do we want
|
|
* it to be the Main Target, so we
|
|
* create it, set OP_NOTMAIN and
|
|
* add it to the list, setting
|
|
* DEFAULT to the new node for
|
|
* later use. We claim the node is
|
|
* A transformation rule to make
|
|
* life easier later, when we'll
|
|
* use Make_HandleUse to actually
|
|
* apply the .DEFAULT commands.
|
|
* .PHONY The list of targets
|
|
* .NOPATH Don't search for file in the path
|
|
* .STALE
|
|
* .BEGIN
|
|
* .END
|
|
* .ERROR
|
|
* .INTERRUPT Are not to be considered the
|
|
* main target.
|
|
* .NOTPARALLEL Make only one target at a time.
|
|
* .SINGLESHELL Create a shell for each command.
|
|
* .ORDER Must set initial predecessor to NULL
|
|
*/
|
|
switch (specType) {
|
|
case ExPath:
|
|
if (paths == NULL) {
|
|
paths = Lst_Init(FALSE);
|
|
}
|
|
(void)Lst_AtEnd(paths, dirSearchPath);
|
|
break;
|
|
case Main:
|
|
if (!Lst_IsEmpty(create)) {
|
|
specType = Not;
|
|
}
|
|
break;
|
|
case Begin:
|
|
case End:
|
|
case Stale:
|
|
case dotError:
|
|
case Interrupt:
|
|
gn = Targ_FindNode(line, TARG_CREATE);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
gn->type |= OP_NOTMAIN|OP_SPECIAL;
|
|
(void)Lst_AtEnd(targets, gn);
|
|
break;
|
|
case Default:
|
|
gn = Targ_NewGN(".DEFAULT");
|
|
gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
|
|
(void)Lst_AtEnd(targets, gn);
|
|
DEFAULT = gn;
|
|
break;
|
|
case NotParallel:
|
|
maxJobs = 1;
|
|
break;
|
|
case SingleShell:
|
|
compatMake = TRUE;
|
|
break;
|
|
case Order:
|
|
predecessor = NULL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (strncmp(line, ".PATH", 5) == 0) {
|
|
/*
|
|
* .PATH<suffix> has to be handled specially.
|
|
* Call on the suffix module to give us a path to
|
|
* modify.
|
|
*/
|
|
Lst path;
|
|
|
|
specType = ExPath;
|
|
path = Suff_GetPath(&line[5]);
|
|
if (path == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Suffix '%s' not defined (yet)",
|
|
&line[5]);
|
|
goto out;
|
|
} else {
|
|
if (paths == NULL) {
|
|
paths = Lst_Init(FALSE);
|
|
}
|
|
(void)Lst_AtEnd(paths, path);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Have word in line. Get or create its node and stick it at
|
|
* the end of the targets list
|
|
*/
|
|
if ((specType == Not) && (*line != '\0')) {
|
|
if (Dir_HasWildcards(line)) {
|
|
/*
|
|
* Targets are to be sought only in the current directory,
|
|
* so create an empty path for the thing. Note we need to
|
|
* use Dir_Destroy in the destruction of the path as the
|
|
* Dir module could have added a directory to the path...
|
|
*/
|
|
Lst emptyPath = Lst_Init(FALSE);
|
|
|
|
Dir_Expand(line, emptyPath, curTargs);
|
|
|
|
Lst_Destroy(emptyPath, Dir_Destroy);
|
|
} else {
|
|
/*
|
|
* No wildcards, but we want to avoid code duplication,
|
|
* so create a list with the word on it.
|
|
*/
|
|
(void)Lst_AtEnd(curTargs, line);
|
|
}
|
|
|
|
/* Apply the targets. */
|
|
|
|
while(!Lst_IsEmpty(curTargs)) {
|
|
char *targName = (char *)Lst_DeQueue(curTargs);
|
|
|
|
if (!Suff_IsTransform (targName)) {
|
|
gn = Targ_FindNode(targName, TARG_CREATE);
|
|
} else {
|
|
gn = Suff_AddTransform(targName);
|
|
}
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
|
|
(void)Lst_AtEnd(targets, gn);
|
|
}
|
|
} else if (specType == ExPath && *line != '.' && *line != '\0') {
|
|
Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
|
|
}
|
|
|
|
/* Don't need the inserted null terminator any more. */
|
|
*cp = savec;
|
|
|
|
/*
|
|
* If it is a special type and not .PATH, it's the only target we
|
|
* allow on this line...
|
|
*/
|
|
if (specType != Not && specType != ExPath) {
|
|
Boolean warning = FALSE;
|
|
|
|
while (*cp && (ParseIsEscaped(lstart, cp) ||
|
|
((*cp != '!') && (*cp != ':')))) {
|
|
if (ParseIsEscaped(lstart, cp) ||
|
|
(*cp != ' ' && *cp != '\t')) {
|
|
warning = TRUE;
|
|
}
|
|
cp++;
|
|
}
|
|
if (warning) {
|
|
Parse_Error(PARSE_WARNING, "Extra target ignored");
|
|
}
|
|
} else {
|
|
while (*cp && isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
}
|
|
line = cp;
|
|
} while (*line && (ParseIsEscaped(lstart, line) ||
|
|
((*line != '!') && (*line != ':'))));
|
|
|
|
/*
|
|
* Don't need the list of target names anymore...
|
|
*/
|
|
Lst_Destroy(curTargs, NULL);
|
|
curTargs = NULL;
|
|
|
|
if (!Lst_IsEmpty(targets)) {
|
|
switch(specType) {
|
|
default:
|
|
Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
|
|
break;
|
|
case Default:
|
|
case Stale:
|
|
case Begin:
|
|
case End:
|
|
case dotError:
|
|
case Interrupt:
|
|
/*
|
|
* These four create nodes on which to hang commands, so
|
|
* targets shouldn't be empty...
|
|
*/
|
|
case Not:
|
|
/*
|
|
* Nothing special here -- targets can be empty if it wants.
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Have now parsed all the target names. Must parse the operator next. The
|
|
* result is left in op .
|
|
*/
|
|
if (*cp == '!') {
|
|
op = OP_FORCE;
|
|
} else if (*cp == ':') {
|
|
if (cp[1] == ':') {
|
|
op = OP_DOUBLEDEP;
|
|
cp++;
|
|
} else {
|
|
op = OP_DEPENDS;
|
|
}
|
|
} else {
|
|
Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive"
|
|
: "Missing dependency operator");
|
|
goto out;
|
|
}
|
|
|
|
/* Advance beyond the operator */
|
|
cp++;
|
|
|
|
/*
|
|
* Apply the operator to the target. This is how we remember which
|
|
* operator a target was defined with. It fails if the operator
|
|
* used isn't consistent across all references.
|
|
*/
|
|
Lst_ForEach(targets, ParseDoOp, &op);
|
|
|
|
/*
|
|
* Onward to the sources.
|
|
*
|
|
* LINE will now point to the first source word, if any, or the
|
|
* end of the string if not.
|
|
*/
|
|
while (*cp && isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
|
|
/*
|
|
* Several special targets take different actions if present with no
|
|
* sources:
|
|
* a .SUFFIXES line with no sources clears out all old suffixes
|
|
* a .PRECIOUS line makes all targets precious
|
|
* a .IGNORE line ignores errors for all targets
|
|
* a .SILENT line creates silence when making all targets
|
|
* a .PATH removes all directories from the search path(s).
|
|
*/
|
|
if (!*line) {
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_ClearSuffixes();
|
|
break;
|
|
case Precious:
|
|
allPrecious = TRUE;
|
|
break;
|
|
case Ignore:
|
|
ignoreErrors = TRUE;
|
|
break;
|
|
case Silent:
|
|
beSilent = TRUE;
|
|
break;
|
|
case ExPath:
|
|
Lst_ForEach(paths, ParseClearPath, NULL);
|
|
Dir_SetPATH();
|
|
break;
|
|
#ifdef POSIX
|
|
case Posix:
|
|
Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
} else if (specType == MFlags) {
|
|
/*
|
|
* Call on functions in main.c to deal with these arguments and
|
|
* set the initial character to a null-character so the loop to
|
|
* get sources won't get anything
|
|
*/
|
|
Main_ParseArgLine(line);
|
|
*line = '\0';
|
|
} else if (specType == ExShell) {
|
|
if (Job_ParseShell(line) != SUCCESS) {
|
|
Parse_Error(PARSE_FATAL, "improper shell specification");
|
|
goto out;
|
|
}
|
|
*line = '\0';
|
|
} else if ((specType == NotParallel) || (specType == SingleShell)) {
|
|
*line = '\0';
|
|
}
|
|
|
|
/*
|
|
* NOW GO FOR THE SOURCES
|
|
*/
|
|
if ((specType == Suffixes) || (specType == ExPath) ||
|
|
(specType == Includes) || (specType == Libs) ||
|
|
(specType == Null) || (specType == ExObjdir))
|
|
{
|
|
while (*line) {
|
|
/*
|
|
* If the target was one that doesn't take files as its sources
|
|
* but takes something like suffixes, we take each
|
|
* space-separated word on the line as a something and deal
|
|
* with it accordingly.
|
|
*
|
|
* If the target was .SUFFIXES, we take each source as a
|
|
* suffix and add it to the list of suffixes maintained by the
|
|
* Suff module.
|
|
*
|
|
* If the target was a .PATH, we add the source as a directory
|
|
* to search on the search path.
|
|
*
|
|
* If it was .INCLUDES, the source is taken to be the suffix of
|
|
* files which will be #included and whose search path should
|
|
* be present in the .INCLUDES variable.
|
|
*
|
|
* If it was .LIBS, the source is taken to be the suffix of
|
|
* files which are considered libraries and whose search path
|
|
* should be present in the .LIBS variable.
|
|
*
|
|
* If it was .NULL, the source is the suffix to use when a file
|
|
* has no valid suffix.
|
|
*
|
|
* If it was .OBJDIR, the source is a new definition for .OBJDIR,
|
|
* and will cause make to do a new chdir to that path.
|
|
*/
|
|
while (*cp && !isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
savec = *cp;
|
|
*cp = '\0';
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_AddSuffix(line, &mainNode);
|
|
break;
|
|
case ExPath:
|
|
Lst_ForEach(paths, ParseAddDir, line);
|
|
break;
|
|
case Includes:
|
|
Suff_AddInclude(line);
|
|
break;
|
|
case Libs:
|
|
Suff_AddLib(line);
|
|
break;
|
|
case Null:
|
|
Suff_SetNull(line);
|
|
break;
|
|
case ExObjdir:
|
|
Main_SetObjdir(line);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
*cp = savec;
|
|
if (savec != '\0') {
|
|
cp++;
|
|
}
|
|
while (*cp && isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
if (paths) {
|
|
Lst_Destroy(paths, NULL);
|
|
}
|
|
if (specType == ExPath)
|
|
Dir_SetPATH();
|
|
} else {
|
|
while (*line) {
|
|
/*
|
|
* The targets take real sources, so we must beware of archive
|
|
* specifications (i.e. things with left parentheses in them)
|
|
* and handle them accordingly.
|
|
*/
|
|
for (; *cp && !isspace ((unsigned char)*cp); cp++) {
|
|
if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
|
|
/*
|
|
* Only stop for a left parenthesis if it isn't at the
|
|
* start of a word (that'll be for variable changes
|
|
* later) and isn't preceded by a dollar sign (a dynamic
|
|
* source).
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (*cp == LPAREN) {
|
|
sources = Lst_Init(FALSE);
|
|
if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Error in source archive spec \"%s\"", line);
|
|
goto out;
|
|
}
|
|
|
|
while (!Lst_IsEmpty (sources)) {
|
|
gn = (GNode *)Lst_DeQueue(sources);
|
|
ParseDoSrc(tOp, gn->name);
|
|
}
|
|
Lst_Destroy(sources, NULL);
|
|
cp = line;
|
|
} else {
|
|
if (*cp) {
|
|
*cp = '\0';
|
|
cp += 1;
|
|
}
|
|
|
|
ParseDoSrc(tOp, line);
|
|
}
|
|
while (*cp && isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
}
|
|
|
|
if (mainNode == NULL) {
|
|
/*
|
|
* If we have yet to decide on a main target to make, in the
|
|
* absence of any user input, we want the first target on
|
|
* the first dependency line that is actually a real target
|
|
* (i.e. isn't a .USE or .EXEC rule) to be made.
|
|
*/
|
|
Lst_ForEach(targets, ParseFindMain, NULL);
|
|
}
|
|
|
|
out:
|
|
if (curTargs)
|
|
Lst_Destroy(curTargs, NULL);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_IsVar --
|
|
* Return TRUE if the passed line is a variable assignment. A variable
|
|
* assignment consists of a single word followed by optional whitespace
|
|
* followed by either a += or an = operator.
|
|
* This function is used both by the Parse_File function and main when
|
|
* parsing the command-line arguments.
|
|
*
|
|
* Input:
|
|
* line the line to check
|
|
*
|
|
* Results:
|
|
* TRUE if it is. FALSE if it ain't
|
|
*
|
|
* Side Effects:
|
|
* none
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Parse_IsVar(char *line)
|
|
{
|
|
Boolean wasSpace = FALSE; /* set TRUE if found a space */
|
|
char ch;
|
|
int level = 0;
|
|
#define ISEQOPERATOR(c) \
|
|
(((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
|
|
|
|
/*
|
|
* Skip to variable name
|
|
*/
|
|
for (;(*line == ' ') || (*line == '\t'); line++)
|
|
continue;
|
|
|
|
/* Scan for one of the assignment operators outside a variable expansion */
|
|
while ((ch = *line++) != 0) {
|
|
if (ch == '(' || ch == '{') {
|
|
level++;
|
|
continue;
|
|
}
|
|
if (ch == ')' || ch == '}') {
|
|
level--;
|
|
continue;
|
|
}
|
|
if (level != 0)
|
|
continue;
|
|
while (ch == ' ' || ch == '\t') {
|
|
ch = *line++;
|
|
wasSpace = TRUE;
|
|
}
|
|
#ifdef SUNSHCMD
|
|
if (ch == ':' && strncmp(line, "sh", 2) == 0) {
|
|
line += 2;
|
|
continue;
|
|
}
|
|
#endif
|
|
if (ch == '=')
|
|
return TRUE;
|
|
if (*line == '=' && ISEQOPERATOR(ch))
|
|
return TRUE;
|
|
if (wasSpace)
|
|
return FALSE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_DoVar --
|
|
* Take the variable assignment in the passed line and do it in the
|
|
* global context.
|
|
*
|
|
* Note: There is a lexical ambiguity with assignment modifier characters
|
|
* in variable names. This routine interprets the character before the =
|
|
* as a modifier. Therefore, an assignment like
|
|
* C++=/usr/bin/CC
|
|
* is interpreted as "C+ +=" instead of "C++ =".
|
|
*
|
|
* Input:
|
|
* line a line guaranteed to be a variable assignment.
|
|
* This reduces error checks
|
|
* ctxt Context in which to do the assignment
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* the variable structure of the given variable name is altered in the
|
|
* global context.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_DoVar(char *line, GNode *ctxt)
|
|
{
|
|
char *cp; /* pointer into line */
|
|
enum {
|
|
VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
|
|
} type; /* Type of assignment */
|
|
char *opc; /* ptr to operator character to
|
|
* null-terminate the variable name */
|
|
Boolean freeCp = FALSE; /* TRUE if cp needs to be freed,
|
|
* i.e. if any variable expansion was
|
|
* performed */
|
|
int depth;
|
|
|
|
/*
|
|
* Skip to variable name
|
|
*/
|
|
while ((*line == ' ') || (*line == '\t')) {
|
|
line++;
|
|
}
|
|
|
|
/*
|
|
* Skip to operator character, nulling out whitespace as we go
|
|
* XXX Rather than counting () and {} we should look for $ and
|
|
* then expand the variable.
|
|
*/
|
|
for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) {
|
|
if (*cp == '(' || *cp == '{') {
|
|
depth++;
|
|
continue;
|
|
}
|
|
if (*cp == ')' || *cp == '}') {
|
|
depth--;
|
|
continue;
|
|
}
|
|
if (depth == 0 && isspace ((unsigned char)*cp)) {
|
|
*cp = '\0';
|
|
}
|
|
}
|
|
opc = cp-1; /* operator is the previous character */
|
|
*cp++ = '\0'; /* nuke the = */
|
|
|
|
/*
|
|
* Check operator type
|
|
*/
|
|
switch (*opc) {
|
|
case '+':
|
|
type = VAR_APPEND;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '?':
|
|
/*
|
|
* If the variable already has a value, we don't do anything.
|
|
*/
|
|
*opc = '\0';
|
|
if (Var_Exists(line, ctxt)) {
|
|
return;
|
|
} else {
|
|
type = VAR_NORMAL;
|
|
}
|
|
break;
|
|
|
|
case ':':
|
|
type = VAR_SUBST;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '!':
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
default:
|
|
#ifdef SUNSHCMD
|
|
while (opc > line && *opc != ':')
|
|
opc--;
|
|
|
|
if (strncmp(opc, ":sh", 3) == 0) {
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
}
|
|
#endif
|
|
type = VAR_NORMAL;
|
|
break;
|
|
}
|
|
|
|
while (isspace ((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
|
|
if (type == VAR_APPEND) {
|
|
Var_Append(line, cp, ctxt);
|
|
} else if (type == VAR_SUBST) {
|
|
/*
|
|
* Allow variables in the old value to be undefined, but leave their
|
|
* invocation alone -- this is done by forcing oldVars to be false.
|
|
* XXX: This can cause recursive variables, but that's not hard to do,
|
|
* and this allows someone to do something like
|
|
*
|
|
* CFLAGS = $(.INCLUDES)
|
|
* CFLAGS := -I.. $(CFLAGS)
|
|
*
|
|
* And not get an error.
|
|
*/
|
|
Boolean oldOldVars = oldVars;
|
|
|
|
oldVars = FALSE;
|
|
|
|
/*
|
|
* make sure that we set the variable the first time to nothing
|
|
* so that it gets substituted!
|
|
*/
|
|
if (!Var_Exists(line, ctxt))
|
|
Var_Set(line, "", ctxt, 0);
|
|
|
|
cp = Var_Subst(NULL, cp, ctxt, FALSE, TRUE);
|
|
oldVars = oldOldVars;
|
|
freeCp = TRUE;
|
|
|
|
Var_Set(line, cp, ctxt, 0);
|
|
} else if (type == VAR_SHELL) {
|
|
char *res;
|
|
const char *error;
|
|
|
|
if (strchr(cp, '$') != NULL) {
|
|
/*
|
|
* There's a dollar sign in the command, so perform variable
|
|
* expansion on the whole thing. The resulting string will need
|
|
* freeing when we're done, so set freeCmd to TRUE.
|
|
*/
|
|
cp = Var_Subst(NULL, cp, VAR_CMD, TRUE, TRUE);
|
|
freeCp = TRUE;
|
|
}
|
|
|
|
res = Cmd_Exec(cp, &error);
|
|
Var_Set(line, res, ctxt, 0);
|
|
free(res);
|
|
|
|
if (error)
|
|
Parse_Error(PARSE_WARNING, error, cp);
|
|
} else {
|
|
/*
|
|
* Normal assignment -- just do it.
|
|
*/
|
|
Var_Set(line, cp, ctxt, 0);
|
|
}
|
|
if (strcmp(line, MAKEOVERRIDES) == 0)
|
|
Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */
|
|
else if (strcmp(line, ".CURDIR") == 0) {
|
|
/*
|
|
* Somone is being (too?) clever...
|
|
* Let's pretend they know what they are doing and
|
|
* re-initialize the 'cur' Path.
|
|
*/
|
|
Dir_InitCur(cp);
|
|
Dir_SetPATH();
|
|
} else if (strcmp(line, MAKE_JOB_PREFIX) == 0) {
|
|
Job_SetPrefix();
|
|
} else if (strcmp(line, MAKE_EXPORTED) == 0) {
|
|
Var_Export(cp, 0);
|
|
}
|
|
if (freeCp)
|
|
free(cp);
|
|
}
|
|
|
|
|
|
/*
|
|
* ParseMaybeSubMake --
|
|
* Scan the command string to see if it a possible submake node
|
|
* Input:
|
|
* cmd the command to scan
|
|
* Results:
|
|
* TRUE if the command is possibly a submake, FALSE if not.
|
|
*/
|
|
static Boolean
|
|
ParseMaybeSubMake(const char *cmd)
|
|
{
|
|
size_t i;
|
|
static struct {
|
|
const char *name;
|
|
size_t len;
|
|
} vals[] = {
|
|
#define MKV(A) { A, sizeof(A) - 1 }
|
|
MKV("${MAKE}"),
|
|
MKV("${.MAKE}"),
|
|
MKV("$(MAKE)"),
|
|
MKV("$(.MAKE)"),
|
|
MKV("make"),
|
|
};
|
|
for (i = 0; i < sizeof(vals)/sizeof(vals[0]); i++) {
|
|
char *ptr;
|
|
if ((ptr = strstr(cmd, vals[i].name)) == NULL)
|
|
continue;
|
|
if ((ptr == cmd || !isalnum((unsigned char)ptr[-1]))
|
|
&& !isalnum((unsigned char)ptr[vals[i].len]))
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/*-
|
|
* ParseAddCmd --
|
|
* Lst_ForEach function to add a command line to all targets
|
|
*
|
|
* Input:
|
|
* gnp the node to which the command is to be added
|
|
* cmd the command to add
|
|
*
|
|
* Results:
|
|
* Always 0
|
|
*
|
|
* Side Effects:
|
|
* A new element is added to the commands list of the node,
|
|
* and the node can be marked as a submake node if the command is
|
|
* determined to be that.
|
|
*/
|
|
static int
|
|
ParseAddCmd(void *gnp, void *cmd)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
|
|
/* Add to last (ie current) cohort for :: targets */
|
|
if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
|
|
gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
|
|
|
|
/* if target already supplied, ignore commands */
|
|
if (!(gn->type & OP_HAS_COMMANDS)) {
|
|
(void)Lst_AtEnd(gn->commands, cmd);
|
|
if (ParseMaybeSubMake(cmd))
|
|
gn->type |= OP_SUBMAKE;
|
|
ParseMark(gn);
|
|
} else {
|
|
#ifdef notyet
|
|
/* XXX: We cannot do this until we fix the tree */
|
|
(void)Lst_AtEnd(gn->commands, cmd);
|
|
Parse_Error(PARSE_WARNING,
|
|
"overriding commands for target \"%s\"; "
|
|
"previous commands defined at %s: %d ignored",
|
|
gn->name, gn->fname, gn->lineno);
|
|
#else
|
|
Parse_Error(PARSE_WARNING,
|
|
"duplicate script for target \"%s\" ignored",
|
|
gn->name);
|
|
ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
|
|
"using previous script for \"%s\" defined here",
|
|
gn->name);
|
|
#endif
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseHasCommands --
|
|
* Callback procedure for Parse_File when destroying the list of
|
|
* targets on the last dependency line. Marks a target as already
|
|
* having commands if it does, to keep from having shell commands
|
|
* on multiple dependency lines.
|
|
*
|
|
* Input:
|
|
* gnp Node to examine
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* OP_HAS_COMMANDS may be set for the target.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseHasCommands(void *gnp)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
if (!Lst_IsEmpty(gn->commands)) {
|
|
gn->type |= OP_HAS_COMMANDS;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Parse_AddIncludeDir --
|
|
* Add a directory to the path searched for included makefiles
|
|
* bracketed by double-quotes. Used by functions in main.c
|
|
*
|
|
* Input:
|
|
* dir The name of the directory to add
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The directory is appended to the list.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_AddIncludeDir(char *dir)
|
|
{
|
|
(void)Dir_AddDir(parseIncPath, dir);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoInclude --
|
|
* Push to another file.
|
|
*
|
|
* The input is the line minus the `.'. A file spec is a string
|
|
* enclosed in <> or "". The former is looked for only in sysIncPath.
|
|
* The latter in . and the directories specified by -I command line
|
|
* options
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFILE are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
|
|
static void
|
|
Parse_include_file(char *file, Boolean isSystem, int silent)
|
|
{
|
|
struct loadedfile *lf;
|
|
char *fullname; /* full pathname of file */
|
|
char *newName;
|
|
char *prefEnd, *incdir;
|
|
int fd;
|
|
int i;
|
|
|
|
/*
|
|
* Now we know the file's name and its search path, we attempt to
|
|
* find the durn thing. A return of NULL indicates the file don't
|
|
* exist.
|
|
*/
|
|
fullname = file[0] == '/' ? bmake_strdup(file) : NULL;
|
|
|
|
if (fullname == NULL && !isSystem) {
|
|
/*
|
|
* Include files contained in double-quotes are first searched for
|
|
* relative to the including file's location. We don't want to
|
|
* cd there, of course, so we just tack on the old file's
|
|
* leading path components and call Dir_FindFile to see if
|
|
* we can locate the beast.
|
|
*/
|
|
|
|
incdir = bmake_strdup(curFile->fname);
|
|
prefEnd = strrchr(incdir, '/');
|
|
if (prefEnd != NULL) {
|
|
*prefEnd = '\0';
|
|
/* Now do lexical processing of leading "../" on the filename */
|
|
for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
|
|
prefEnd = strrchr(incdir + 1, '/');
|
|
if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0)
|
|
break;
|
|
*prefEnd = '\0';
|
|
}
|
|
newName = str_concat(incdir, file + i, STR_ADDSLASH);
|
|
fullname = Dir_FindFile(newName, parseIncPath);
|
|
if (fullname == NULL)
|
|
fullname = Dir_FindFile(newName, dirSearchPath);
|
|
free(newName);
|
|
}
|
|
free(incdir);
|
|
|
|
if (fullname == NULL) {
|
|
/*
|
|
* Makefile wasn't found in same directory as included makefile.
|
|
* Search for it first on the -I search path,
|
|
* then on the .PATH search path, if not found in a -I directory.
|
|
* If we have a suffix specific path we should use that.
|
|
*/
|
|
char *suff;
|
|
Lst suffPath = NULL;
|
|
|
|
if ((suff = strrchr(file, '.'))) {
|
|
suffPath = Suff_GetPath(suff);
|
|
if (suffPath != NULL) {
|
|
fullname = Dir_FindFile(file, suffPath);
|
|
}
|
|
}
|
|
if (fullname == NULL) {
|
|
fullname = Dir_FindFile(file, parseIncPath);
|
|
if (fullname == NULL) {
|
|
fullname = Dir_FindFile(file, dirSearchPath);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Looking for a system file or file still not found */
|
|
if (fullname == NULL) {
|
|
/*
|
|
* Look for it on the system path
|
|
*/
|
|
fullname = Dir_FindFile(file,
|
|
Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
|
|
}
|
|
|
|
if (fullname == NULL) {
|
|
if (!silent)
|
|
Parse_Error(PARSE_FATAL, "Could not find %s", file);
|
|
return;
|
|
}
|
|
|
|
/* Actually open the file... */
|
|
fd = open(fullname, O_RDONLY);
|
|
if (fd == -1) {
|
|
if (!silent)
|
|
Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
|
|
free(fullname);
|
|
return;
|
|
}
|
|
|
|
/* load it */
|
|
lf = loadfile(fullname, fd);
|
|
|
|
ParseSetIncludedFile();
|
|
/* Start reading from this file next */
|
|
Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf);
|
|
curFile->lf = lf;
|
|
}
|
|
|
|
static void
|
|
ParseDoInclude(char *line)
|
|
{
|
|
char endc; /* the character which ends the file spec */
|
|
char *cp; /* current position in file spec */
|
|
int silent = (*line != 'i') ? 1 : 0;
|
|
char *file = &line[7 + silent];
|
|
|
|
/* Skip to delimiter character so we know where to look */
|
|
while (*file == ' ' || *file == '\t')
|
|
file++;
|
|
|
|
if (*file != '"' && *file != '<') {
|
|
Parse_Error(PARSE_FATAL,
|
|
".include filename must be delimited by '\"' or '<'");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set the search path on which to find the include file based on the
|
|
* characters which bracket its name. Angle-brackets imply it's
|
|
* a system Makefile while double-quotes imply it's a user makefile
|
|
*/
|
|
if (*file == '<') {
|
|
endc = '>';
|
|
} else {
|
|
endc = '"';
|
|
}
|
|
|
|
/* Skip to matching delimiter */
|
|
for (cp = ++file; *cp && *cp != endc; cp++)
|
|
continue;
|
|
|
|
if (*cp != endc) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unclosed %cinclude filename. '%c' expected",
|
|
'.', endc);
|
|
return;
|
|
}
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
file = Var_Subst(NULL, file, VAR_CMD, FALSE, TRUE);
|
|
|
|
Parse_include_file(file, endc == '>', silent);
|
|
free(file);
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseSetIncludedFile --
|
|
* Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE
|
|
* and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* The .INCLUDEDFROMFILE variable is overwritten by the contents
|
|
* of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten
|
|
* by the contents of .PARSEDIR
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseSetIncludedFile(void)
|
|
{
|
|
char *pf, *fp = NULL;
|
|
char *pd, *dp = NULL;
|
|
|
|
pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp);
|
|
Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0);
|
|
pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp);
|
|
Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0);
|
|
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' "
|
|
"${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf);
|
|
|
|
if (fp)
|
|
free(fp);
|
|
if (dp)
|
|
free(dp);
|
|
}
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseSetParseFile --
|
|
* Set the .PARSEDIR and .PARSEFILE variables to the dirname and
|
|
* basename of the given filename
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* The .PARSEDIR and .PARSEFILE variables are overwritten by the
|
|
* dirname and basename of the given filename.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseSetParseFile(const char *filename)
|
|
{
|
|
char *slash, *dirname;
|
|
const char *pd, *pf;
|
|
int len;
|
|
|
|
slash = strrchr(filename, '/');
|
|
if (slash == NULL) {
|
|
Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0);
|
|
Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0);
|
|
dirname= NULL;
|
|
} else {
|
|
len = slash - filename;
|
|
dirname = bmake_malloc(len + 1);
|
|
memcpy(dirname, filename, len);
|
|
dirname[len] = '\0';
|
|
Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0);
|
|
Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0);
|
|
}
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n",
|
|
__func__, pd, pf);
|
|
free(dirname);
|
|
}
|
|
|
|
/*
|
|
* Track the makefiles we read - so makefiles can
|
|
* set dependencies on them.
|
|
* Avoid adding anything more than once.
|
|
*/
|
|
|
|
static void
|
|
ParseTrackInput(const char *name)
|
|
{
|
|
char *old;
|
|
char *ep;
|
|
char *fp = NULL;
|
|
size_t name_len = strlen(name);
|
|
|
|
old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp);
|
|
if (old) {
|
|
ep = old + strlen(old) - name_len;
|
|
/* does it contain name? */
|
|
for (; old != NULL; old = strchr(old, ' ')) {
|
|
if (*old == ' ')
|
|
old++;
|
|
if (old >= ep)
|
|
break; /* cannot contain name */
|
|
if (memcmp(old, name, name_len) == 0
|
|
&& (old[name_len] == 0 || old[name_len] == ' '))
|
|
goto cleanup;
|
|
}
|
|
}
|
|
Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL);
|
|
cleanup:
|
|
if (fp) {
|
|
free(fp);
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_setInput --
|
|
* Start Parsing from the given source
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFile are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_SetInput(const char *name, int line, int fd,
|
|
char *(*nextbuf)(void *, size_t *), void *arg)
|
|
{
|
|
char *buf;
|
|
size_t len;
|
|
|
|
if (name == NULL)
|
|
name = curFile->fname;
|
|
else
|
|
ParseTrackInput(name);
|
|
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n",
|
|
__func__, name, line, fd, nextbuf, arg);
|
|
|
|
if (fd == -1 && nextbuf == NULL)
|
|
/* sanity */
|
|
return;
|
|
|
|
if (curFile != NULL)
|
|
/* Save exiting file info */
|
|
Lst_AtFront(includes, curFile);
|
|
|
|
/* Allocate and fill in new structure */
|
|
curFile = bmake_malloc(sizeof *curFile);
|
|
|
|
/*
|
|
* Once the previous state has been saved, we can get down to reading
|
|
* the new file. We set up the name of the file to be the absolute
|
|
* name of the include file so error messages refer to the right
|
|
* place.
|
|
*/
|
|
curFile->fname = bmake_strdup(name);
|
|
curFile->lineno = line;
|
|
curFile->first_lineno = line;
|
|
curFile->nextbuf = nextbuf;
|
|
curFile->nextbuf_arg = arg;
|
|
curFile->lf = NULL;
|
|
|
|
assert(nextbuf != NULL);
|
|
|
|
/* Get first block of input data */
|
|
buf = curFile->nextbuf(curFile->nextbuf_arg, &len);
|
|
if (buf == NULL) {
|
|
/* Was all a waste of time ... */
|
|
if (curFile->fname)
|
|
free(curFile->fname);
|
|
free(curFile);
|
|
return;
|
|
}
|
|
curFile->P_str = buf;
|
|
curFile->P_ptr = buf;
|
|
curFile->P_end = buf+len;
|
|
|
|
curFile->cond_depth = Cond_save_depth();
|
|
ParseSetParseFile(name);
|
|
}
|
|
|
|
#ifdef SYSVINCLUDE
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseTraditionalInclude --
|
|
* Push to another file.
|
|
*
|
|
* The input is the current line. The file name(s) are
|
|
* following the "include".
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFILE are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseTraditionalInclude(char *line)
|
|
{
|
|
char *cp; /* current position in file spec */
|
|
int done = 0;
|
|
int silent = (line[0] != 'i') ? 1 : 0;
|
|
char *file = &line[silent + 7];
|
|
char *all_files;
|
|
|
|
if (DEBUG(PARSE)) {
|
|
fprintf(debug_file, "%s: %s\n", __func__, file);
|
|
}
|
|
|
|
/*
|
|
* Skip over whitespace
|
|
*/
|
|
while (isspace((unsigned char)*file))
|
|
file++;
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
all_files = Var_Subst(NULL, file, VAR_CMD, FALSE, TRUE);
|
|
|
|
if (*file == '\0') {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Filename missing from \"include\"");
|
|
return;
|
|
}
|
|
|
|
for (file = all_files; !done; file = cp + 1) {
|
|
/* Skip to end of line or next whitespace */
|
|
for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
|
|
continue;
|
|
|
|
if (*cp)
|
|
*cp = '\0';
|
|
else
|
|
done = 1;
|
|
|
|
Parse_include_file(file, FALSE, silent);
|
|
}
|
|
free(all_files);
|
|
}
|
|
#endif
|
|
|
|
#ifdef GMAKEEXPORT
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseGmakeExport --
|
|
* Parse export <variable>=<value>
|
|
*
|
|
* And set the environment with it.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseGmakeExport(char *line)
|
|
{
|
|
char *variable = &line[6];
|
|
char *value;
|
|
|
|
if (DEBUG(PARSE)) {
|
|
fprintf(debug_file, "%s: %s\n", __func__, variable);
|
|
}
|
|
|
|
/*
|
|
* Skip over whitespace
|
|
*/
|
|
while (isspace((unsigned char)*variable))
|
|
variable++;
|
|
|
|
for (value = variable; *value && *value != '='; value++)
|
|
continue;
|
|
|
|
if (*value != '=') {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Variable/Value missing from \"export\"");
|
|
return;
|
|
}
|
|
*value++ = '\0'; /* terminate variable */
|
|
|
|
/*
|
|
* Expand the value before putting it in the environment.
|
|
*/
|
|
value = Var_Subst(NULL, value, VAR_CMD, FALSE, TRUE);
|
|
setenv(variable, value, 1);
|
|
}
|
|
#endif
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseEOF --
|
|
* Called when EOF is reached in the current file. If we were reading
|
|
* an include file, the includes stack is popped and things set up
|
|
* to go back to reading the previous file at the previous location.
|
|
*
|
|
* Results:
|
|
* CONTINUE if there's more to do. DONE if not.
|
|
*
|
|
* Side Effects:
|
|
* The old curFILE, is closed. The includes list is shortened.
|
|
* lineno, curFILE, and fname are changed if CONTINUE is returned.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseEOF(void)
|
|
{
|
|
char *ptr;
|
|
size_t len;
|
|
|
|
assert(curFile->nextbuf != NULL);
|
|
|
|
/* get next input buffer, if any */
|
|
ptr = curFile->nextbuf(curFile->nextbuf_arg, &len);
|
|
curFile->P_ptr = ptr;
|
|
curFile->P_str = ptr;
|
|
curFile->P_end = ptr + len;
|
|
curFile->lineno = curFile->first_lineno;
|
|
if (ptr != NULL) {
|
|
/* Iterate again */
|
|
return CONTINUE;
|
|
}
|
|
|
|
/* Ensure the makefile (or loop) didn't have mismatched conditionals */
|
|
Cond_restore_depth(curFile->cond_depth);
|
|
|
|
if (curFile->lf != NULL) {
|
|
loadedfile_destroy(curFile->lf);
|
|
curFile->lf = NULL;
|
|
}
|
|
|
|
/* Dispose of curFile info */
|
|
/* Leak curFile->fname because all the gnodes have pointers to it */
|
|
free(curFile->P_str);
|
|
free(curFile);
|
|
|
|
curFile = Lst_DeQueue(includes);
|
|
|
|
if (curFile == NULL) {
|
|
/* We've run out of input */
|
|
Var_Delete(".PARSEDIR", VAR_GLOBAL);
|
|
Var_Delete(".PARSEFILE", VAR_GLOBAL);
|
|
Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL);
|
|
Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL);
|
|
return DONE;
|
|
}
|
|
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n",
|
|
curFile->fname, curFile->lineno);
|
|
|
|
/* Restore the PARSEDIR/PARSEFILE variables */
|
|
ParseSetParseFile(curFile->fname);
|
|
return (CONTINUE);
|
|
}
|
|
|
|
#define PARSE_RAW 1
|
|
#define PARSE_SKIP 2
|
|
|
|
static char *
|
|
ParseGetLine(int flags, int *length)
|
|
{
|
|
IFile *cf = curFile;
|
|
char *ptr;
|
|
char ch;
|
|
char *line;
|
|
char *line_end;
|
|
char *escaped;
|
|
char *comment;
|
|
char *tp;
|
|
|
|
/* Loop through blank lines and comment lines */
|
|
for (;;) {
|
|
cf->lineno++;
|
|
line = cf->P_ptr;
|
|
ptr = line;
|
|
line_end = line;
|
|
escaped = NULL;
|
|
comment = NULL;
|
|
for (;;) {
|
|
if (cf->P_end != NULL && ptr == cf->P_end) {
|
|
/* end of buffer */
|
|
ch = 0;
|
|
break;
|
|
}
|
|
ch = *ptr;
|
|
if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
|
|
if (cf->P_end == NULL)
|
|
/* End of string (aka for loop) data */
|
|
break;
|
|
/* see if there is more we can parse */
|
|
while (ptr++ < cf->P_end) {
|
|
if ((ch = *ptr) == '\n') {
|
|
if (ptr > line && ptr[-1] == '\\')
|
|
continue;
|
|
Parse_Error(PARSE_WARNING,
|
|
"Zero byte read from file, skipping rest of line.");
|
|
break;
|
|
}
|
|
}
|
|
if (cf->nextbuf != NULL) {
|
|
/*
|
|
* End of this buffer; return EOF and outer logic
|
|
* will get the next one. (eww)
|
|
*/
|
|
break;
|
|
}
|
|
Parse_Error(PARSE_FATAL, "Zero byte read from file");
|
|
return NULL;
|
|
}
|
|
|
|
if (ch == '\\') {
|
|
/* Don't treat next character as special, remember first one */
|
|
if (escaped == NULL)
|
|
escaped = ptr;
|
|
if (ptr[1] == '\n')
|
|
cf->lineno++;
|
|
ptr += 2;
|
|
line_end = ptr;
|
|
continue;
|
|
}
|
|
if (ch == '#' && comment == NULL) {
|
|
/* Remember first '#' for comment stripping */
|
|
/* Unless previous char was '[', as in modifier :[#] */
|
|
if (!(ptr > line && ptr[-1] == '['))
|
|
comment = line_end;
|
|
}
|
|
ptr++;
|
|
if (ch == '\n')
|
|
break;
|
|
if (!isspace((unsigned char)ch))
|
|
/* We are not interested in trailing whitespace */
|
|
line_end = ptr;
|
|
}
|
|
|
|
/* Save next 'to be processed' location */
|
|
cf->P_ptr = ptr;
|
|
|
|
/* Check we have a non-comment, non-blank line */
|
|
if (line_end == line || comment == line) {
|
|
if (ch == 0)
|
|
/* At end of file */
|
|
return NULL;
|
|
/* Parse another line */
|
|
continue;
|
|
}
|
|
|
|
/* We now have a line of data */
|
|
*line_end = 0;
|
|
|
|
if (flags & PARSE_RAW) {
|
|
/* Leave '\' (etc) in line buffer (eg 'for' lines) */
|
|
*length = line_end - line;
|
|
return line;
|
|
}
|
|
|
|
if (flags & PARSE_SKIP) {
|
|
/* Completely ignore non-directives */
|
|
if (line[0] != '.')
|
|
continue;
|
|
/* We could do more of the .else/.elif/.endif checks here */
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Brutally ignore anything after a non-escaped '#' in non-commands */
|
|
if (comment != NULL && line[0] != '\t') {
|
|
line_end = comment;
|
|
*line_end = 0;
|
|
}
|
|
|
|
/* If we didn't see a '\\' then the in-situ data is fine */
|
|
if (escaped == NULL) {
|
|
*length = line_end - line;
|
|
return line;
|
|
}
|
|
|
|
/* Remove escapes from '\n' and '#' */
|
|
tp = ptr = escaped;
|
|
escaped = line;
|
|
for (; ; *tp++ = ch) {
|
|
ch = *ptr++;
|
|
if (ch != '\\') {
|
|
if (ch == 0)
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
ch = *ptr++;
|
|
if (ch == 0) {
|
|
/* Delete '\\' at end of buffer */
|
|
tp--;
|
|
break;
|
|
}
|
|
|
|
if (ch == '#' && line[0] != '\t')
|
|
/* Delete '\\' from before '#' on non-command lines */
|
|
continue;
|
|
|
|
if (ch != '\n') {
|
|
/* Leave '\\' in buffer for later */
|
|
*tp++ = '\\';
|
|
/* Make sure we don't delete an escaped ' ' from the line end */
|
|
escaped = tp + 1;
|
|
continue;
|
|
}
|
|
|
|
/* Escaped '\n' replace following whitespace with a single ' ' */
|
|
while (ptr[0] == ' ' || ptr[0] == '\t')
|
|
ptr++;
|
|
ch = ' ';
|
|
}
|
|
|
|
/* Delete any trailing spaces - eg from empty continuations */
|
|
while (tp > escaped && isspace((unsigned char)tp[-1]))
|
|
tp--;
|
|
|
|
*tp = 0;
|
|
*length = tp - line;
|
|
return line;
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseReadLine --
|
|
* Read an entire line from the input file. Called only by Parse_File.
|
|
*
|
|
* Results:
|
|
* A line w/o its newline
|
|
*
|
|
* Side Effects:
|
|
* Only those associated with reading a character
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static char *
|
|
ParseReadLine(void)
|
|
{
|
|
char *line; /* Result */
|
|
int lineLength; /* Length of result */
|
|
int lineno; /* Saved line # */
|
|
int rval;
|
|
|
|
for (;;) {
|
|
line = ParseGetLine(0, &lineLength);
|
|
if (line == NULL)
|
|
return NULL;
|
|
|
|
if (line[0] != '.')
|
|
return line;
|
|
|
|
/*
|
|
* The line might be a conditional. Ask the conditional module
|
|
* about it and act accordingly
|
|
*/
|
|
switch (Cond_Eval(line)) {
|
|
case COND_SKIP:
|
|
/* Skip to next conditional that evaluates to COND_PARSE. */
|
|
do {
|
|
line = ParseGetLine(PARSE_SKIP, &lineLength);
|
|
} while (line && Cond_Eval(line) != COND_PARSE);
|
|
if (line == NULL)
|
|
break;
|
|
continue;
|
|
case COND_PARSE:
|
|
continue;
|
|
case COND_INVALID: /* Not a conditional line */
|
|
/* Check for .for loops */
|
|
rval = For_Eval(line);
|
|
if (rval == 0)
|
|
/* Not a .for line */
|
|
break;
|
|
if (rval < 0)
|
|
/* Syntax error - error printed, ignore line */
|
|
continue;
|
|
/* Start of a .for loop */
|
|
lineno = curFile->lineno;
|
|
/* Accumulate loop lines until matching .endfor */
|
|
do {
|
|
line = ParseGetLine(PARSE_RAW, &lineLength);
|
|
if (line == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unexpected end of file in for loop.");
|
|
break;
|
|
}
|
|
} while (For_Accum(line));
|
|
/* Stash each iteration as a new 'input file' */
|
|
For_Run(lineno);
|
|
/* Read next line from for-loop buffer */
|
|
continue;
|
|
}
|
|
return (line);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseFinishLine --
|
|
* Handle the end of a dependency group.
|
|
*
|
|
* Results:
|
|
* Nothing.
|
|
*
|
|
* Side Effects:
|
|
* inLine set FALSE. 'targets' list destroyed.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseFinishLine(void)
|
|
{
|
|
if (inLine) {
|
|
Lst_ForEach(targets, Suff_EndTransform, NULL);
|
|
Lst_Destroy(targets, ParseHasCommands);
|
|
targets = NULL;
|
|
inLine = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_File --
|
|
* Parse a file into its component parts, incorporating it into the
|
|
* current dependency graph. This is the main function and controls
|
|
* almost every other function in this module
|
|
*
|
|
* Input:
|
|
* name the name of the file being read
|
|
* fd Open file to makefile to parse
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* closes fd.
|
|
* Loads. Nodes are added to the list of all targets, nodes and links
|
|
* are added to the dependency graph. etc. etc. etc.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_File(const char *name, int fd)
|
|
{
|
|
char *cp; /* pointer into the line */
|
|
char *line; /* the line we're working on */
|
|
struct loadedfile *lf;
|
|
|
|
lf = loadfile(name, fd);
|
|
|
|
inLine = FALSE;
|
|
fatals = 0;
|
|
|
|
if (name == NULL) {
|
|
name = "(stdin)";
|
|
}
|
|
|
|
Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf);
|
|
curFile->lf = lf;
|
|
|
|
do {
|
|
for (; (line = ParseReadLine()) != NULL; ) {
|
|
if (DEBUG(PARSE))
|
|
fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
|
|
curFile->lineno, line);
|
|
if (*line == '.') {
|
|
/*
|
|
* Lines that begin with the special character may be
|
|
* include or undef directives.
|
|
* On the other hand they can be suffix rules (.c.o: ...)
|
|
* or just dependencies for filenames that start '.'.
|
|
*/
|
|
for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
|
|
continue;
|
|
}
|
|
if (strncmp(cp, "include", 7) == 0 ||
|
|
((cp[0] == 's' || cp[0] == '-') &&
|
|
strncmp(&cp[1], "include", 7) == 0)) {
|
|
ParseDoInclude(cp);
|
|
continue;
|
|
}
|
|
if (strncmp(cp, "undef", 5) == 0) {
|
|
char *cp2;
|
|
for (cp += 5; isspace((unsigned char) *cp); cp++)
|
|
continue;
|
|
for (cp2 = cp; !isspace((unsigned char) *cp2) &&
|
|
(*cp2 != '\0'); cp2++)
|
|
continue;
|
|
*cp2 = '\0';
|
|
Var_Delete(cp, VAR_GLOBAL);
|
|
continue;
|
|
} else if (strncmp(cp, "export", 6) == 0) {
|
|
for (cp += 6; isspace((unsigned char) *cp); cp++)
|
|
continue;
|
|
Var_Export(cp, 1);
|
|
continue;
|
|
} else if (strncmp(cp, "unexport", 8) == 0) {
|
|
Var_UnExport(cp);
|
|
continue;
|
|
} else if (strncmp(cp, "info", 4) == 0 ||
|
|
strncmp(cp, "error", 5) == 0 ||
|
|
strncmp(cp, "warning", 7) == 0) {
|
|
if (ParseMessage(cp))
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (*line == '\t') {
|
|
/*
|
|
* If a line starts with a tab, it can only hope to be
|
|
* a creation command.
|
|
*/
|
|
cp = line + 1;
|
|
shellCommand:
|
|
for (; isspace ((unsigned char)*cp); cp++) {
|
|
continue;
|
|
}
|
|
if (*cp) {
|
|
if (!inLine)
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unassociated shell command \"%s\"",
|
|
cp);
|
|
/*
|
|
* So long as it's not a blank line and we're actually
|
|
* in a dependency spec, add the command to the list of
|
|
* commands of all targets in the dependency spec
|
|
*/
|
|
if (targets) {
|
|
cp = bmake_strdup(cp);
|
|
Lst_ForEach(targets, ParseAddCmd, cp);
|
|
#ifdef CLEANUP
|
|
Lst_AtEnd(targCmds, cp);
|
|
#endif
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
#ifdef SYSVINCLUDE
|
|
if (((strncmp(line, "include", 7) == 0 &&
|
|
isspace((unsigned char) line[7])) ||
|
|
((line[0] == 's' || line[0] == '-') &&
|
|
strncmp(&line[1], "include", 7) == 0 &&
|
|
isspace((unsigned char) line[8]))) &&
|
|
strchr(line, ':') == NULL) {
|
|
/*
|
|
* It's an S3/S5-style "include".
|
|
*/
|
|
ParseTraditionalInclude(line);
|
|
continue;
|
|
}
|
|
#endif
|
|
#ifdef GMAKEEXPORT
|
|
if (strncmp(line, "export", 6) == 0 &&
|
|
isspace((unsigned char) line[6]) &&
|
|
strchr(line, ':') == NULL) {
|
|
/*
|
|
* It's a Gmake "export".
|
|
*/
|
|
ParseGmakeExport(line);
|
|
continue;
|
|
}
|
|
#endif
|
|
if (Parse_IsVar(line)) {
|
|
ParseFinishLine();
|
|
Parse_DoVar(line, VAR_GLOBAL);
|
|
continue;
|
|
}
|
|
|
|
#ifndef POSIX
|
|
/*
|
|
* To make life easier on novices, if the line is indented we
|
|
* first make sure the line has a dependency operator in it.
|
|
* If it doesn't have an operator and we're in a dependency
|
|
* line's script, we assume it's actually a shell command
|
|
* and add it to the current list of targets.
|
|
*/
|
|
cp = line;
|
|
if (isspace((unsigned char) line[0])) {
|
|
while ((*cp != '\0') && isspace((unsigned char) *cp))
|
|
cp++;
|
|
while (*cp && (ParseIsEscaped(line, cp) ||
|
|
(*cp != ':') && (*cp != '!'))) {
|
|
cp++;
|
|
}
|
|
if (*cp == '\0') {
|
|
if (inLine) {
|
|
Parse_Error(PARSE_WARNING,
|
|
"Shell command needs a leading tab");
|
|
goto shellCommand;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
ParseFinishLine();
|
|
|
|
/*
|
|
* For some reason - probably to make the parser impossible -
|
|
* a ';' can be used to separate commands from dependencies.
|
|
* Attempt to avoid ';' inside substitution patterns.
|
|
*/
|
|
{
|
|
int level = 0;
|
|
|
|
for (cp = line; *cp != 0; cp++) {
|
|
if (*cp == '\\' && cp[1] != 0) {
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (*cp == '$' &&
|
|
(cp[1] == '(' || cp[1] == '{')) {
|
|
level++;
|
|
continue;
|
|
}
|
|
if (level > 0) {
|
|
if (*cp == ')' || *cp == '}') {
|
|
level--;
|
|
continue;
|
|
}
|
|
} else if (*cp == ';') {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (*cp != 0)
|
|
/* Terminate the dependency list at the ';' */
|
|
*cp++ = 0;
|
|
else
|
|
cp = NULL;
|
|
|
|
/*
|
|
* We now know it's a dependency line so it needs to have all
|
|
* variables expanded before being parsed. Tell the variable
|
|
* module to complain if some variable is undefined...
|
|
*/
|
|
line = Var_Subst(NULL, line, VAR_CMD, TRUE, TRUE);
|
|
|
|
/*
|
|
* Need a non-circular list for the target nodes
|
|
*/
|
|
if (targets)
|
|
Lst_Destroy(targets, NULL);
|
|
|
|
targets = Lst_Init(FALSE);
|
|
inLine = TRUE;
|
|
|
|
ParseDoDependency(line);
|
|
free(line);
|
|
|
|
/* If there were commands after a ';', add them now */
|
|
if (cp != NULL) {
|
|
goto shellCommand;
|
|
}
|
|
}
|
|
/*
|
|
* Reached EOF, but it may be just EOF of an include file...
|
|
*/
|
|
} while (ParseEOF() == CONTINUE);
|
|
|
|
if (fatals) {
|
|
(void)fflush(stdout);
|
|
(void)fprintf(stderr,
|
|
"%s: Fatal errors encountered -- cannot continue",
|
|
progname);
|
|
PrintOnError(NULL, NULL);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_Init --
|
|
* initialize the parsing module
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* the parseIncPath list is initialized...
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_Init(void)
|
|
{
|
|
mainNode = NULL;
|
|
parseIncPath = Lst_Init(FALSE);
|
|
sysIncPath = Lst_Init(FALSE);
|
|
defIncPath = Lst_Init(FALSE);
|
|
includes = Lst_Init(FALSE);
|
|
#ifdef CLEANUP
|
|
targCmds = Lst_Init(FALSE);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
Parse_End(void)
|
|
{
|
|
#ifdef CLEANUP
|
|
Lst_Destroy(targCmds, (FreeProc *)free);
|
|
if (targets)
|
|
Lst_Destroy(targets, NULL);
|
|
Lst_Destroy(defIncPath, Dir_Destroy);
|
|
Lst_Destroy(sysIncPath, Dir_Destroy);
|
|
Lst_Destroy(parseIncPath, Dir_Destroy);
|
|
Lst_Destroy(includes, NULL); /* Should be empty now */
|
|
#endif
|
|
}
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Parse_MainName --
|
|
* Return a Lst of the main target to create for main()'s sake. If
|
|
* no such target exists, we Punt with an obnoxious error message.
|
|
*
|
|
* Results:
|
|
* A Lst of the single node to create.
|
|
*
|
|
* Side Effects:
|
|
* None.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Lst
|
|
Parse_MainName(void)
|
|
{
|
|
Lst mainList; /* result list */
|
|
|
|
mainList = Lst_Init(FALSE);
|
|
|
|
if (mainNode == NULL) {
|
|
Punt("no target to make.");
|
|
/*NOTREACHED*/
|
|
} else if (mainNode->type & OP_DOUBLEDEP) {
|
|
(void)Lst_AtEnd(mainList, mainNode);
|
|
Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
|
|
}
|
|
else
|
|
(void)Lst_AtEnd(mainList, mainNode);
|
|
Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
|
|
return (mainList);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseMark --
|
|
* Add the filename and lineno to the GNode so that we remember
|
|
* where it was first defined.
|
|
*
|
|
* Side Effects:
|
|
* None.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseMark(GNode *gn)
|
|
{
|
|
gn->fname = curFile->fname;
|
|
gn->lineno = curFile->lineno;
|
|
}
|