3327 lines
81 KiB
C
3327 lines
81 KiB
C
/* $NetBSD: parse.c,v 1.560 2021/06/21 10:42:06 rillig 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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/*
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* Parsing of makefiles.
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*
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* Parse_File is the main entry point and controls most of the other
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* functions in this module.
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*
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* The directories for the .include "..." directive are kept in
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* 'parseIncPath', while those for .include <...> are kept in 'sysIncPath'.
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* The targets currently being defined are kept in 'targets'.
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*
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* Interface:
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* Parse_Init Initialize the module
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*
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* Parse_End Clean up the module
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*
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* Parse_File Parse a top-level makefile. Included files are
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* handled by IncludeFile instead.
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*
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* Parse_IsVar Return true if the given line is a variable
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* assignment. Used by MainParseArgs to determine if
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* an argument is a target or a variable assignment.
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* Used internally for pretty much the same thing.
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*
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* Parse_Error Report a parse error, a warning or an informational
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* message.
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*
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* Parse_MainName Returns a list 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 <errno.h>
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#include <stdarg.h>
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#include "make.h"
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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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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#include "dir.h"
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#include "job.h"
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#include "pathnames.h"
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/* "@(#)parse.c 8.3 (Berkeley) 3/19/94" */
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MAKE_RCSID("$NetBSD: parse.c,v 1.560 2021/06/21 10:42:06 rillig Exp $");
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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 (relative? absolute?) */
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bool fromForLoop; /* simulated .include by the .for loop */
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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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unsigned int cond_depth; /* 'if' nesting when file opened */
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bool depending; /* state of doing_depend on EOF */
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/* The buffer from which the file's content is read. */
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char *buf_freeIt;
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char *buf_ptr; /* next char to be read */
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char *buf_end;
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/* Function to read more data, with a single opaque argument. */
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ReadMoreProc readMore;
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void *readMoreArg;
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struct loadedfile *lf; /* loadedfile object, if any */
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} IFile;
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/*
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* Tokens for target attributes
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*/
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typedef enum ParseSpecial {
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SP_ATTRIBUTE, /* Generic attribute */
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SP_BEGIN, /* .BEGIN */
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SP_DEFAULT, /* .DEFAULT */
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SP_DELETE_ON_ERROR, /* .DELETE_ON_ERROR */
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SP_END, /* .END */
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SP_ERROR, /* .ERROR */
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SP_IGNORE, /* .IGNORE */
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SP_INCLUDES, /* .INCLUDES; not mentioned in the manual page */
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SP_INTERRUPT, /* .INTERRUPT */
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SP_LIBS, /* .LIBS; not mentioned in the manual page */
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/* .MAIN and we don't have anything user-specified to make */
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SP_MAIN,
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SP_META, /* .META */
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SP_MFLAGS, /* .MFLAGS or .MAKEFLAGS */
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SP_NOMETA, /* .NOMETA */
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SP_NOMETA_CMP, /* .NOMETA_CMP */
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SP_NOPATH, /* .NOPATH */
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SP_NOT, /* Not special */
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SP_NOTPARALLEL, /* .NOTPARALLEL or .NO_PARALLEL */
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SP_NULL, /* .NULL; not mentioned in the manual page */
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SP_OBJDIR, /* .OBJDIR */
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SP_ORDER, /* .ORDER */
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SP_PARALLEL, /* .PARALLEL; not mentioned in the manual page */
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SP_PATH, /* .PATH or .PATH.suffix */
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SP_PHONY, /* .PHONY */
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#ifdef POSIX
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SP_POSIX, /* .POSIX; not mentioned in the manual page */
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#endif
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SP_PRECIOUS, /* .PRECIOUS */
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SP_SHELL, /* .SHELL */
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SP_SILENT, /* .SILENT */
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SP_SINGLESHELL, /* .SINGLESHELL; not mentioned in the manual page */
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SP_STALE, /* .STALE */
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SP_SUFFIXES, /* .SUFFIXES */
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SP_WAIT /* .WAIT */
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} ParseSpecial;
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typedef List SearchPathList;
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typedef ListNode SearchPathListNode;
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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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/* eval state */
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/*
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* During parsing, the targets from the left-hand side of the currently
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* active dependency line, or NULL if the current line does not belong to a
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* dependency line, for example because it is a variable assignment.
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*
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* See unit-tests/deptgt.mk, keyword "parse.c:targets".
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*/
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static GNodeList *targets;
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#ifdef CLEANUP
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/*
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* All shell commands for all targets, in no particular order and possibly
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* with duplicates. Kept in a separate list since the commands from .USE or
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* .USEBEFORE nodes are shared with other GNodes, thereby giving up the
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* easily understandable ownership over the allocated strings.
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*/
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static StringList targCmds = LST_INIT;
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#endif
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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 *order_pred;
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/* parser state */
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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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/*
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* The include chain of makefiles. At index 0 is the top-level makefile from
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* the command line, followed by the included files or .for loops, up to and
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* including the current file.
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*
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* See PrintStackTrace for how to interpret the data.
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*/
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static Vector /* of IFile */ includes;
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static IFile *
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GetInclude(size_t i)
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{
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return Vector_Get(&includes, i);
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}
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/* The file that is currently being read. */
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static IFile *
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CurFile(void)
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{
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return GetInclude(includes.len - 1);
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}
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/* include paths */
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SearchPath *parseIncPath; /* directories for "..." includes */
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SearchPath *sysIncPath; /* directories for <...> includes */
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SearchPath *defSysIncPath; /* default for sysIncPath */
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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 (SP_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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GNodeType op; /* Operator when used as a source */
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} parseKeywords[] = {
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{ ".BEGIN", SP_BEGIN, OP_NONE },
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{ ".DEFAULT", SP_DEFAULT, OP_NONE },
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{ ".DELETE_ON_ERROR", SP_DELETE_ON_ERROR, OP_NONE },
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{ ".END", SP_END, OP_NONE },
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{ ".ERROR", SP_ERROR, OP_NONE },
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{ ".EXEC", SP_ATTRIBUTE, OP_EXEC },
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{ ".IGNORE", SP_IGNORE, OP_IGNORE },
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{ ".INCLUDES", SP_INCLUDES, OP_NONE },
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{ ".INTERRUPT", SP_INTERRUPT, OP_NONE },
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{ ".INVISIBLE", SP_ATTRIBUTE, OP_INVISIBLE },
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{ ".JOIN", SP_ATTRIBUTE, OP_JOIN },
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{ ".LIBS", SP_LIBS, OP_NONE },
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{ ".MADE", SP_ATTRIBUTE, OP_MADE },
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{ ".MAIN", SP_MAIN, OP_NONE },
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{ ".MAKE", SP_ATTRIBUTE, OP_MAKE },
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{ ".MAKEFLAGS", SP_MFLAGS, OP_NONE },
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{ ".META", SP_META, OP_META },
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{ ".MFLAGS", SP_MFLAGS, OP_NONE },
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{ ".NOMETA", SP_NOMETA, OP_NOMETA },
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{ ".NOMETA_CMP", SP_NOMETA_CMP, OP_NOMETA_CMP },
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{ ".NOPATH", SP_NOPATH, OP_NOPATH },
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{ ".NOTMAIN", SP_ATTRIBUTE, OP_NOTMAIN },
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{ ".NOTPARALLEL", SP_NOTPARALLEL, OP_NONE },
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{ ".NO_PARALLEL", SP_NOTPARALLEL, OP_NONE },
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{ ".NULL", SP_NULL, OP_NONE },
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{ ".OBJDIR", SP_OBJDIR, OP_NONE },
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{ ".OPTIONAL", SP_ATTRIBUTE, OP_OPTIONAL },
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{ ".ORDER", SP_ORDER, OP_NONE },
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{ ".PARALLEL", SP_PARALLEL, OP_NONE },
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{ ".PATH", SP_PATH, OP_NONE },
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{ ".PHONY", SP_PHONY, OP_PHONY },
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#ifdef POSIX
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{ ".POSIX", SP_POSIX, OP_NONE },
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#endif
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{ ".PRECIOUS", SP_PRECIOUS, OP_PRECIOUS },
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{ ".RECURSIVE", SP_ATTRIBUTE, OP_MAKE },
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{ ".SHELL", SP_SHELL, OP_NONE },
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{ ".SILENT", SP_SILENT, OP_SILENT },
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{ ".SINGLESHELL", SP_SINGLESHELL, OP_NONE },
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{ ".STALE", SP_STALE, OP_NONE },
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{ ".SUFFIXES", SP_SUFFIXES, OP_NONE },
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{ ".USE", SP_ATTRIBUTE, OP_USE },
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{ ".USEBEFORE", SP_ATTRIBUTE, OP_USEBEFORE },
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{ ".WAIT", SP_WAIT, OP_NONE },
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};
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/* file loader */
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struct loadedfile {
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/* XXX: What is the lifetime of this path? Who manages the memory? */
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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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bool used; /* XXX: have we used the data yet */
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};
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/* XXX: What is the lifetime of the path? Who manages the memory? */
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static struct loadedfile *
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loadedfile_create(const char *path, char *buf, size_t buflen)
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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 = buf;
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lf->len = buflen;
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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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free(lf->buf);
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free(lf);
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}
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/*
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* readMore() 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_readMore(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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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 bool
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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 false;
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if (!S_ISREG(st.st_mode))
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return false;
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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 1 GiB. 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 > 0x3fffffff)
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return false;
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*ret = (size_t)st.st_size;
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return true;
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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
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* 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.
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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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ssize_t n;
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Buffer buf;
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size_t filesize;
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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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}
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if (load_getsize(fd, &filesize)) {
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/*
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* Avoid resizing the buffer later for no reason.
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*
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* At the same time leave space for adding a final '\n',
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* just in case it is missing in the file.
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*/
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filesize++;
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} else
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filesize = 1024;
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Buf_InitSize(&buf, filesize);
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for (;;) {
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assert(buf.len <= buf.cap);
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if (buf.len == buf.cap) {
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if (buf.cap > 0x1fffffff) {
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errno = EFBIG;
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Error("%s: file too large", path);
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exit(2); /* Not 1 so -q can distinguish error */
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}
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Buf_Expand(&buf);
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}
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assert(buf.len < buf.cap);
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n = read(fd, buf.data + buf.len, buf.cap - buf.len);
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if (n < 0) {
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Error("%s: read error: %s", path, strerror(errno));
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exit(2); /* Not 1 so -q can distinguish error */
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}
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if (n == 0)
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break;
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buf.len += (size_t)n;
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}
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assert(buf.len <= buf.cap);
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if (!Buf_EndsWith(&buf, '\n'))
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Buf_AddByte(&buf, '\n');
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if (path != NULL)
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close(fd);
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{
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struct loadedfile *lf = loadedfile_create(path,
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buf.data, buf.len);
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Buf_DoneData(&buf);
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return lf;
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}
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}
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static void
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PrintStackTrace(void)
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|
{
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const IFile *entries;
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size_t i, n;
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|
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if (!(DEBUG(PARSE)))
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return;
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entries = GetInclude(0);
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n = includes.len;
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if (n == 0)
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return;
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n--; /* This entry is already in the diagnostic. */
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|
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/*
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|
* For the IFiles with fromForLoop, lineno seems to be sorted
|
|
* backwards. This is because lineno is the number of completely
|
|
* parsed lines, which for a .for loop is right after the
|
|
* corresponding .endfor. The intuitive line number comes from
|
|
* first_lineno instead, which points at the start of the .for loop.
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|
*
|
|
* To make the stack trace intuitive, the entry below each chain of
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|
* .for loop entries must be ignored completely since neither its
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|
* lineno nor its first_lineno is useful. Instead, the topmost of
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|
* each chain of .for loop entries needs to be printed twice, once
|
|
* with its first_lineno and once with its lineno.
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|
*/
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|
for (i = n; i-- > 0;) {
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|
const IFile *entry = entries + i;
|
|
const char *fname = entry->fname;
|
|
bool printLineno;
|
|
char dirbuf[MAXPATHLEN + 1];
|
|
|
|
if (fname[0] != '/' && strcmp(fname, "(stdin)") != 0)
|
|
fname = realpath(fname, dirbuf);
|
|
|
|
printLineno = !entry->fromForLoop;
|
|
if (i + 1 < n && entries[i + 1].fromForLoop == printLineno)
|
|
printLineno = entry->fromForLoop;
|
|
|
|
if (printLineno)
|
|
debug_printf("\tin .include from %s:%d\n",
|
|
fname, entry->lineno);
|
|
if (entry->fromForLoop)
|
|
debug_printf("\tin .for loop from %s:%d\n",
|
|
fname, entry->first_lineno);
|
|
}
|
|
}
|
|
|
|
/* Check if the current character is escaped on the current line. */
|
|
static bool
|
|
ParseIsEscaped(const char *line, const char *c)
|
|
{
|
|
bool active = false;
|
|
for (;;) {
|
|
if (line == c)
|
|
return active;
|
|
if (*--c != '\\')
|
|
return active;
|
|
active = !active;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add the filename and lineno to the GNode so that we remember where it
|
|
* was first defined.
|
|
*/
|
|
static void
|
|
ParseMark(GNode *gn)
|
|
{
|
|
IFile *curFile = CurFile();
|
|
gn->fname = curFile->fname;
|
|
gn->lineno = curFile->lineno;
|
|
}
|
|
|
|
/*
|
|
* Look in the table of keywords for one matching the given string.
|
|
* Return the index of the keyword, or -1 if it isn't there.
|
|
*/
|
|
static int
|
|
ParseFindKeyword(const char *str)
|
|
{
|
|
int start = 0;
|
|
int end = sizeof parseKeywords / sizeof parseKeywords[0] - 1;
|
|
|
|
do {
|
|
int curr = start + (end - start) / 2;
|
|
int diff = strcmp(str, parseKeywords[curr].name);
|
|
|
|
if (diff == 0)
|
|
return curr;
|
|
if (diff < 0)
|
|
end = curr - 1;
|
|
else
|
|
start = curr + 1;
|
|
} while (start <= end);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
PrintLocation(FILE *f, const char *fname, size_t lineno)
|
|
{
|
|
char dirbuf[MAXPATHLEN + 1];
|
|
FStr dir, base;
|
|
|
|
if (*fname == '/' || strcmp(fname, "(stdin)") == 0) {
|
|
(void)fprintf(f, "\"%s\" line %u: ", fname, (unsigned)lineno);
|
|
return;
|
|
}
|
|
|
|
/* Find out which makefile is the culprit.
|
|
* We try ${.PARSEDIR} and apply realpath(3) if not absolute. */
|
|
|
|
dir = Var_Value(SCOPE_GLOBAL, ".PARSEDIR");
|
|
if (dir.str == NULL)
|
|
dir.str = ".";
|
|
if (dir.str[0] != '/')
|
|
dir.str = realpath(dir.str, dirbuf);
|
|
|
|
base = Var_Value(SCOPE_GLOBAL, ".PARSEFILE");
|
|
if (base.str == NULL)
|
|
base.str = str_basename(fname);
|
|
|
|
(void)fprintf(f, "\"%s/%s\" line %u: ",
|
|
dir.str, base.str, (unsigned)lineno);
|
|
|
|
FStr_Done(&base);
|
|
FStr_Done(&dir);
|
|
}
|
|
|
|
static void
|
|
ParseVErrorInternal(FILE *f, const char *fname, size_t lineno,
|
|
ParseErrorLevel type, const char *fmt, va_list ap)
|
|
{
|
|
static bool fatal_warning_error_printed = false;
|
|
|
|
(void)fprintf(f, "%s: ", progname);
|
|
|
|
if (fname != NULL)
|
|
PrintLocation(f, fname, lineno);
|
|
if (type == PARSE_WARNING)
|
|
(void)fprintf(f, "warning: ");
|
|
(void)vfprintf(f, fmt, ap);
|
|
(void)fprintf(f, "\n");
|
|
(void)fflush(f);
|
|
|
|
if (type == PARSE_INFO)
|
|
goto print_stack_trace;
|
|
if (type == PARSE_WARNING && !opts.parseWarnFatal)
|
|
goto print_stack_trace;
|
|
fatals++;
|
|
if (type == PARSE_WARNING && !fatal_warning_error_printed) {
|
|
Error("parsing warnings being treated as errors");
|
|
fatal_warning_error_printed = true;
|
|
}
|
|
|
|
print_stack_trace:
|
|
PrintStackTrace();
|
|
}
|
|
|
|
static void
|
|
ParseErrorInternal(const char *fname, size_t lineno,
|
|
ParseErrorLevel type, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
(void)fflush(stdout);
|
|
va_start(ap, fmt);
|
|
ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap);
|
|
va_end(ap);
|
|
|
|
if (opts.debug_file != stderr && opts.debug_file != stdout) {
|
|
va_start(ap, fmt);
|
|
ParseVErrorInternal(opts.debug_file, fname, lineno, type,
|
|
fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print a parse error message, including location information.
|
|
*
|
|
* If the level is PARSE_FATAL, continue parsing until the end of the
|
|
* current top-level makefile, then exit (see Parse_File).
|
|
*
|
|
* Fmt is given without a trailing newline.
|
|
*/
|
|
void
|
|
Parse_Error(ParseErrorLevel type, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
const char *fname;
|
|
size_t lineno;
|
|
|
|
if (includes.len == 0) {
|
|
fname = NULL;
|
|
lineno = 0;
|
|
} else {
|
|
IFile *curFile = CurFile();
|
|
fname = curFile->fname;
|
|
lineno = (size_t)curFile->lineno;
|
|
}
|
|
|
|
va_start(ap, fmt);
|
|
(void)fflush(stdout);
|
|
ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap);
|
|
va_end(ap);
|
|
|
|
if (opts.debug_file != stderr && opts.debug_file != stdout) {
|
|
va_start(ap, fmt);
|
|
ParseVErrorInternal(opts.debug_file, fname, lineno, type,
|
|
fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Parse and handle an .info, .warning or .error directive.
|
|
* For an .error directive, immediately exit.
|
|
*/
|
|
static void
|
|
ParseMessage(ParseErrorLevel level, const char *levelName, const char *umsg)
|
|
{
|
|
char *xmsg;
|
|
|
|
if (umsg[0] == '\0') {
|
|
Parse_Error(PARSE_FATAL, "Missing argument for \".%s\"",
|
|
levelName);
|
|
return;
|
|
}
|
|
|
|
(void)Var_Subst(umsg, SCOPE_CMDLINE, VARE_WANTRES, &xmsg);
|
|
/* TODO: handle errors */
|
|
|
|
Parse_Error(level, "%s", xmsg);
|
|
free(xmsg);
|
|
|
|
if (level == PARSE_FATAL) {
|
|
PrintOnError(NULL, NULL);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add the child to the parent's children.
|
|
*
|
|
* Additionally, add the parent to the child's parents, but only if the
|
|
* target is not special. An example for such a special target is .END,
|
|
* which does not need to be informed once the child target has been made.
|
|
*/
|
|
static void
|
|
LinkSource(GNode *pgn, GNode *cgn, bool isSpecial)
|
|
{
|
|
if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty(&pgn->cohorts))
|
|
pgn = pgn->cohorts.last->datum;
|
|
|
|
Lst_Append(&pgn->children, cgn);
|
|
pgn->unmade++;
|
|
|
|
/* Special targets like .END don't need any children. */
|
|
if (!isSpecial)
|
|
Lst_Append(&cgn->parents, pgn);
|
|
|
|
if (DEBUG(PARSE)) {
|
|
debug_printf("# %s: added child %s - %s\n",
|
|
__func__, pgn->name, cgn->name);
|
|
Targ_PrintNode(pgn, 0);
|
|
Targ_PrintNode(cgn, 0);
|
|
}
|
|
}
|
|
|
|
/* Add the node to each target from the current dependency group. */
|
|
static void
|
|
LinkToTargets(GNode *gn, bool isSpecial)
|
|
{
|
|
GNodeListNode *ln;
|
|
|
|
for (ln = targets->first; ln != NULL; ln = ln->next)
|
|
LinkSource(ln->datum, gn, isSpecial);
|
|
}
|
|
|
|
static bool
|
|
TryApplyDependencyOperator(GNode *gn, GNodeType op)
|
|
{
|
|
/*
|
|
* If the node occurred on the left-hand side of a dependency and the
|
|
* operator also defines a dependency, they must match.
|
|
*/
|
|
if ((op & OP_OPMASK) && (gn->type & OP_OPMASK) &&
|
|
((op & OP_OPMASK) != (gn->type & OP_OPMASK))) {
|
|
Parse_Error(PARSE_FATAL, "Inconsistent operator for %s",
|
|
gn->name);
|
|
return false;
|
|
}
|
|
|
|
if (op == OP_DOUBLEDEP && (gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
|
|
/*
|
|
* If the node was of the left-hand side of a '::' operator,
|
|
* we need to create a new instance of it for the children
|
|
* and commands on this dependency line since each of these
|
|
* dependency groups has its own attributes and commands,
|
|
* separate from the others.
|
|
*
|
|
* 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_NewInternalNode(gn->name);
|
|
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;
|
|
Lst_Append(&gn->cohorts, cohort);
|
|
cohort->centurion = gn;
|
|
gn->unmade_cohorts++;
|
|
snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
|
|
(unsigned int)gn->unmade_cohorts % 1000000);
|
|
} 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 true;
|
|
}
|
|
|
|
static void
|
|
ApplyDependencyOperator(GNodeType op)
|
|
{
|
|
GNodeListNode *ln;
|
|
|
|
for (ln = targets->first; ln != NULL; ln = ln->next)
|
|
if (!TryApplyDependencyOperator(ln->datum, op))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We add a .WAIT node in the dependency list. After any dynamic dependencies
|
|
* (and filename globbing) have happened, it is given a dependency on each
|
|
* previous child, back until the 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 diagnostics).
|
|
*/
|
|
static void
|
|
ParseDependencySourceWait(bool isSpecial)
|
|
{
|
|
static int wait_number = 0;
|
|
char wait_src[16];
|
|
GNode *gn;
|
|
|
|
snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
|
|
gn = Targ_NewInternalNode(wait_src);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
|
|
LinkToTargets(gn, isSpecial);
|
|
|
|
}
|
|
|
|
static bool
|
|
ParseDependencySourceKeyword(const char *src, ParseSpecial specType)
|
|
{
|
|
int keywd;
|
|
GNodeType op;
|
|
|
|
if (*src != '.' || !ch_isupper(src[1]))
|
|
return false;
|
|
|
|
keywd = ParseFindKeyword(src);
|
|
if (keywd == -1)
|
|
return false;
|
|
|
|
op = parseKeywords[keywd].op;
|
|
if (op != OP_NONE) {
|
|
ApplyDependencyOperator(op);
|
|
return true;
|
|
}
|
|
if (parseKeywords[keywd].spec == SP_WAIT) {
|
|
ParseDependencySourceWait(specType != SP_NOT);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
ParseDependencySourceMain(const char *src)
|
|
{
|
|
/*
|
|
* In a line like ".MAIN: source1 source2", add all sources to the
|
|
* list of things to create, but only if the user didn't specify a
|
|
* target on the command line and .MAIN occurs for the first time.
|
|
*
|
|
* See ParseDependencyTargetSpecial, branch SP_MAIN.
|
|
* See unit-tests/cond-func-make-main.mk.
|
|
*/
|
|
Lst_Append(&opts.create, bmake_strdup(src));
|
|
/*
|
|
* Add the name to the .TARGETS variable as well, so the user can
|
|
* employ that, if desired.
|
|
*/
|
|
Global_Append(".TARGETS", src);
|
|
}
|
|
|
|
static void
|
|
ParseDependencySourceOrder(const char *src)
|
|
{
|
|
GNode *gn;
|
|
/*
|
|
* Create proper predecessor/successor links between the previous
|
|
* source and the current one.
|
|
*/
|
|
gn = Targ_GetNode(src);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
if (order_pred != NULL) {
|
|
Lst_Append(&order_pred->order_succ, gn);
|
|
Lst_Append(&gn->order_pred, order_pred);
|
|
if (DEBUG(PARSE)) {
|
|
debug_printf("# %s: added Order dependency %s - %s\n",
|
|
__func__, order_pred->name, gn->name);
|
|
Targ_PrintNode(order_pred, 0);
|
|
Targ_PrintNode(gn, 0);
|
|
}
|
|
}
|
|
/*
|
|
* The current source now becomes the predecessor for the next one.
|
|
*/
|
|
order_pred = gn;
|
|
}
|
|
|
|
static void
|
|
ParseDependencySourceOther(const char *src, GNodeType tOp,
|
|
ParseSpecial specType)
|
|
{
|
|
GNode *gn;
|
|
|
|
/*
|
|
* The source is not an attribute, so find/create a node for it.
|
|
* After that, 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_GetNode(src);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
if (tOp != OP_NONE)
|
|
gn->type |= tOp;
|
|
else
|
|
LinkToTargets(gn, specType != SP_NOT);
|
|
}
|
|
|
|
/*
|
|
* Given the name of a source in a dependency line, figure out if it is an
|
|
* attribute (such as .SILENT) 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 (such as .PHONY) and apply it if so.
|
|
* Otherwise, make the source a child of the targets in the list 'targets'.
|
|
*
|
|
* Input:
|
|
* tOp operator (if any) from special targets
|
|
* src name of the source to handle
|
|
*/
|
|
static void
|
|
ParseDependencySource(GNodeType tOp, const char *src, ParseSpecial specType)
|
|
{
|
|
if (ParseDependencySourceKeyword(src, specType))
|
|
return;
|
|
|
|
if (specType == SP_MAIN)
|
|
ParseDependencySourceMain(src);
|
|
else if (specType == SP_ORDER)
|
|
ParseDependencySourceOrder(src);
|
|
else
|
|
ParseDependencySourceOther(src, tOp, specType);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
static void
|
|
FindMainTarget(void)
|
|
{
|
|
GNodeListNode *ln;
|
|
|
|
if (mainNode != NULL)
|
|
return;
|
|
|
|
for (ln = targets->first; ln != NULL; ln = ln->next) {
|
|
GNode *gn = ln->datum;
|
|
if (!(gn->type & OP_NOTARGET)) {
|
|
DEBUG1(MAKE, "Setting main node to \"%s\"\n", gn->name);
|
|
mainNode = gn;
|
|
Targ_SetMain(gn);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
static void
|
|
ParseErrorNoDependency(const char *lstart)
|
|
{
|
|
if ((strncmp(lstart, "<<<<<<", 6) == 0) ||
|
|
(strncmp(lstart, "======", 6) == 0) ||
|
|
(strncmp(lstart, ">>>>>>", 6) == 0))
|
|
Parse_Error(PARSE_FATAL,
|
|
"Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
|
|
else if (lstart[0] == '.') {
|
|
const char *dirstart = lstart + 1;
|
|
const char *dirend;
|
|
cpp_skip_whitespace(&dirstart);
|
|
dirend = dirstart;
|
|
while (ch_isalnum(*dirend) || *dirend == '-')
|
|
dirend++;
|
|
Parse_Error(PARSE_FATAL, "Unknown directive \"%.*s\"",
|
|
(int)(dirend - dirstart), dirstart);
|
|
} else
|
|
Parse_Error(PARSE_FATAL, "Invalid line type");
|
|
}
|
|
|
|
static void
|
|
ParseDependencyTargetWord(const char **pp, const char *lstart)
|
|
{
|
|
const char *cp = *pp;
|
|
|
|
while (*cp != '\0') {
|
|
if ((ch_isspace(*cp) || *cp == '!' || *cp == ':' ||
|
|
*cp == '(') &&
|
|
!ParseIsEscaped(lstart, cp))
|
|
break;
|
|
|
|
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.
|
|
*/
|
|
const char *nested_p = cp;
|
|
FStr nested_val;
|
|
|
|
(void)Var_Parse(&nested_p, SCOPE_CMDLINE,
|
|
VARE_PARSE_ONLY, &nested_val);
|
|
/* TODO: handle errors */
|
|
FStr_Done(&nested_val);
|
|
cp += nested_p - cp;
|
|
} else
|
|
cp++;
|
|
}
|
|
|
|
*pp = cp;
|
|
}
|
|
|
|
/*
|
|
* Handle special targets like .PATH, .DEFAULT, .BEGIN, .ORDER.
|
|
*
|
|
* See the tests deptgt-*.mk.
|
|
*/
|
|
static void
|
|
ParseDependencyTargetSpecial(ParseSpecial *inout_specType,
|
|
const char *targetName,
|
|
SearchPathList **inout_paths)
|
|
{
|
|
switch (*inout_specType) {
|
|
case SP_PATH:
|
|
if (*inout_paths == NULL)
|
|
*inout_paths = Lst_New();
|
|
Lst_Append(*inout_paths, &dirSearchPath);
|
|
break;
|
|
case SP_MAIN:
|
|
/*
|
|
* Allow targets from the command line to override the
|
|
* .MAIN node.
|
|
*/
|
|
if (!Lst_IsEmpty(&opts.create))
|
|
*inout_specType = SP_NOT;
|
|
break;
|
|
case SP_BEGIN:
|
|
case SP_END:
|
|
case SP_STALE:
|
|
case SP_ERROR:
|
|
case SP_INTERRUPT: {
|
|
GNode *gn = Targ_GetNode(targetName);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
gn->type |= OP_NOTMAIN | OP_SPECIAL;
|
|
Lst_Append(targets, gn);
|
|
break;
|
|
}
|
|
case SP_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. 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.
|
|
*/
|
|
GNode *gn = GNode_New(".DEFAULT");
|
|
gn->type |= OP_NOTMAIN | OP_TRANSFORM;
|
|
Lst_Append(targets, gn);
|
|
defaultNode = gn;
|
|
break;
|
|
}
|
|
case SP_DELETE_ON_ERROR:
|
|
deleteOnError = true;
|
|
break;
|
|
case SP_NOTPARALLEL:
|
|
opts.maxJobs = 1;
|
|
break;
|
|
case SP_SINGLESHELL:
|
|
opts.compatMake = true;
|
|
break;
|
|
case SP_ORDER:
|
|
order_pred = NULL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* .PATH<suffix> has to be handled specially.
|
|
* Call on the suffix module to give us a path to modify.
|
|
*/
|
|
static bool
|
|
ParseDependencyTargetPath(const char *suffixName,
|
|
SearchPathList **inout_paths)
|
|
{
|
|
SearchPath *path;
|
|
|
|
path = Suff_GetPath(suffixName);
|
|
if (path == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Suffix '%s' not defined (yet)", suffixName);
|
|
return false;
|
|
}
|
|
|
|
if (*inout_paths == NULL)
|
|
*inout_paths = Lst_New();
|
|
Lst_Append(*inout_paths, path);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* See if it's a special target and if so set specType to match it.
|
|
*/
|
|
static bool
|
|
ParseDependencyTarget(const char *targetName,
|
|
ParseSpecial *inout_specType,
|
|
GNodeType *out_tOp, SearchPathList **inout_paths)
|
|
{
|
|
int keywd;
|
|
|
|
if (!(targetName[0] == '.' && ch_isupper(targetName[1])))
|
|
return true;
|
|
|
|
/*
|
|
* See if the target is a special target that must have it
|
|
* or its sources handled specially.
|
|
*/
|
|
keywd = ParseFindKeyword(targetName);
|
|
if (keywd != -1) {
|
|
if (*inout_specType == SP_PATH &&
|
|
parseKeywords[keywd].spec != SP_PATH) {
|
|
Parse_Error(PARSE_FATAL, "Mismatched special targets");
|
|
return false;
|
|
}
|
|
|
|
*inout_specType = parseKeywords[keywd].spec;
|
|
*out_tOp = parseKeywords[keywd].op;
|
|
|
|
ParseDependencyTargetSpecial(inout_specType, targetName,
|
|
inout_paths);
|
|
|
|
} else if (strncmp(targetName, ".PATH", 5) == 0) {
|
|
*inout_specType = SP_PATH;
|
|
if (!ParseDependencyTargetPath(targetName + 5, inout_paths))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
ParseDependencyTargetMundane(char *targetName, StringList *curTargs)
|
|
{
|
|
if (Dir_HasWildcards(targetName)) {
|
|
/*
|
|
* 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...
|
|
*/
|
|
SearchPath *emptyPath = SearchPath_New();
|
|
|
|
SearchPath_Expand(emptyPath, targetName, curTargs);
|
|
|
|
SearchPath_Free(emptyPath);
|
|
} else {
|
|
/*
|
|
* No wildcards, but we want to avoid code duplication,
|
|
* so create a list with the word on it.
|
|
*/
|
|
Lst_Append(curTargs, targetName);
|
|
}
|
|
|
|
/* Apply the targets. */
|
|
|
|
while (!Lst_IsEmpty(curTargs)) {
|
|
char *targName = Lst_Dequeue(curTargs);
|
|
GNode *gn = Suff_IsTransform(targName)
|
|
? Suff_AddTransform(targName)
|
|
: Targ_GetNode(targName);
|
|
if (doing_depend)
|
|
ParseMark(gn);
|
|
|
|
Lst_Append(targets, gn);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ParseDependencyTargetExtraWarn(char **pp, const char *lstart)
|
|
{
|
|
bool warning = false;
|
|
char *cp = *pp;
|
|
|
|
while (*cp != '\0') {
|
|
if (!ParseIsEscaped(lstart, cp) && (*cp == '!' || *cp == ':'))
|
|
break;
|
|
if (ParseIsEscaped(lstart, cp) || (*cp != ' ' && *cp != '\t'))
|
|
warning = true;
|
|
cp++;
|
|
}
|
|
if (warning)
|
|
Parse_Error(PARSE_WARNING, "Extra target ignored");
|
|
|
|
*pp = cp;
|
|
}
|
|
|
|
static void
|
|
ParseDependencyCheckSpec(ParseSpecial specType)
|
|
{
|
|
switch (specType) {
|
|
default:
|
|
Parse_Error(PARSE_WARNING,
|
|
"Special and mundane targets don't mix. "
|
|
"Mundane ones ignored");
|
|
break;
|
|
case SP_DEFAULT:
|
|
case SP_STALE:
|
|
case SP_BEGIN:
|
|
case SP_END:
|
|
case SP_ERROR:
|
|
case SP_INTERRUPT:
|
|
/*
|
|
* These create nodes on which to hang commands, so targets
|
|
* shouldn't be empty.
|
|
*/
|
|
case SP_NOT:
|
|
/* Nothing special here -- targets can be empty if it wants. */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* In a dependency line like 'targets: sources' or 'targets! sources', parse
|
|
* the operator ':', '::' or '!' from between the targets and the sources.
|
|
*/
|
|
static bool
|
|
ParseDependencyOp(char **pp, const char *lstart, GNodeType *out_op)
|
|
{
|
|
const char *cp = *pp;
|
|
|
|
if (*cp == '!') {
|
|
*out_op = OP_FORCE;
|
|
(*pp)++;
|
|
return true;
|
|
}
|
|
|
|
if (*cp == ':') {
|
|
if (cp[1] == ':') {
|
|
*out_op = OP_DOUBLEDEP;
|
|
(*pp) += 2;
|
|
} else {
|
|
*out_op = OP_DEPENDS;
|
|
(*pp)++;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
{
|
|
const char *msg = lstart[0] == '.'
|
|
? "Unknown directive" : "Missing dependency operator";
|
|
Parse_Error(PARSE_FATAL, "%s", msg);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ClearPaths(SearchPathList *paths)
|
|
{
|
|
if (paths != NULL) {
|
|
SearchPathListNode *ln;
|
|
for (ln = paths->first; ln != NULL; ln = ln->next)
|
|
SearchPath_Clear(ln->datum);
|
|
}
|
|
|
|
Dir_SetPATH();
|
|
}
|
|
|
|
/*
|
|
* 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).
|
|
*/
|
|
static void
|
|
ParseDependencySourcesEmpty(ParseSpecial specType, SearchPathList *paths)
|
|
{
|
|
switch (specType) {
|
|
case SP_SUFFIXES:
|
|
Suff_ClearSuffixes();
|
|
break;
|
|
case SP_PRECIOUS:
|
|
allPrecious = true;
|
|
break;
|
|
case SP_IGNORE:
|
|
opts.ignoreErrors = true;
|
|
break;
|
|
case SP_SILENT:
|
|
opts.beSilent = true;
|
|
break;
|
|
case SP_PATH:
|
|
ClearPaths(paths);
|
|
break;
|
|
#ifdef POSIX
|
|
case SP_POSIX:
|
|
Global_Set("%POSIX", "1003.2");
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
AddToPaths(const char *dir, SearchPathList *paths)
|
|
{
|
|
if (paths != NULL) {
|
|
SearchPathListNode *ln;
|
|
for (ln = paths->first; ln != NULL; ln = ln->next)
|
|
(void)SearchPath_Add(ln->datum, dir);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
static void
|
|
ParseDependencySourceSpecial(ParseSpecial specType, char *word,
|
|
SearchPathList *paths)
|
|
{
|
|
switch (specType) {
|
|
case SP_SUFFIXES:
|
|
Suff_AddSuffix(word, &mainNode);
|
|
break;
|
|
case SP_PATH:
|
|
AddToPaths(word, paths);
|
|
break;
|
|
case SP_INCLUDES:
|
|
Suff_AddInclude(word);
|
|
break;
|
|
case SP_LIBS:
|
|
Suff_AddLib(word);
|
|
break;
|
|
case SP_NULL:
|
|
Suff_SetNull(word);
|
|
break;
|
|
case SP_OBJDIR:
|
|
Main_SetObjdir(false, "%s", word);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ParseDependencyTargets(char **inout_cp,
|
|
char **inout_line,
|
|
const char *lstart,
|
|
ParseSpecial *inout_specType,
|
|
GNodeType *inout_tOp,
|
|
SearchPathList **inout_paths,
|
|
StringList *curTargs)
|
|
{
|
|
char *cp;
|
|
char *tgt = *inout_line;
|
|
char savec;
|
|
const char *p;
|
|
|
|
for (;;) {
|
|
/*
|
|
* 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. */
|
|
cp = tgt;
|
|
p = cp;
|
|
ParseDependencyTargetWord(&p, lstart);
|
|
cp += p - cp;
|
|
|
|
/*
|
|
* 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 == '(') {
|
|
/*
|
|
* 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 true if all went well and false if
|
|
* there was an error in the specification. On error,
|
|
* line should remain untouched.
|
|
*/
|
|
if (!Arch_ParseArchive(&tgt, targets, SCOPE_CMDLINE)) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Error in archive specification: \"%s\"",
|
|
tgt);
|
|
return false;
|
|
}
|
|
|
|
cp = tgt;
|
|
continue;
|
|
}
|
|
|
|
if (*cp == '\0') {
|
|
ParseErrorNoDependency(lstart);
|
|
return false;
|
|
}
|
|
|
|
/* Insert a null terminator. */
|
|
savec = *cp;
|
|
*cp = '\0';
|
|
|
|
if (!ParseDependencyTarget(tgt, inout_specType, inout_tOp,
|
|
inout_paths))
|
|
return false;
|
|
|
|
/*
|
|
* Have word in line. Get or create its node and stick it at
|
|
* the end of the targets list
|
|
*/
|
|
if (*inout_specType == SP_NOT && *tgt != '\0')
|
|
ParseDependencyTargetMundane(tgt, curTargs);
|
|
else if (*inout_specType == SP_PATH && *tgt != '.' &&
|
|
*tgt != '\0')
|
|
Parse_Error(PARSE_WARNING, "Extra target (%s) ignored",
|
|
tgt);
|
|
|
|
/* 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 (*inout_specType != SP_NOT && *inout_specType != SP_PATH)
|
|
ParseDependencyTargetExtraWarn(&cp, lstart);
|
|
else
|
|
pp_skip_whitespace(&cp);
|
|
|
|
tgt = cp;
|
|
if (*tgt == '\0')
|
|
break;
|
|
if ((*tgt == '!' || *tgt == ':') &&
|
|
!ParseIsEscaped(lstart, tgt))
|
|
break;
|
|
}
|
|
|
|
*inout_cp = cp;
|
|
*inout_line = tgt;
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
ParseDependencySourcesSpecial(char *start, char *end,
|
|
ParseSpecial specType, SearchPathList *paths)
|
|
{
|
|
char savec;
|
|
|
|
while (*start != '\0') {
|
|
while (*end != '\0' && !ch_isspace(*end))
|
|
end++;
|
|
savec = *end;
|
|
*end = '\0';
|
|
ParseDependencySourceSpecial(specType, start, paths);
|
|
*end = savec;
|
|
if (savec != '\0')
|
|
end++;
|
|
pp_skip_whitespace(&end);
|
|
start = end;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ParseDependencySourcesMundane(char *start, char *end,
|
|
ParseSpecial specType, GNodeType tOp)
|
|
{
|
|
while (*start != '\0') {
|
|
/*
|
|
* 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 (; *end != '\0' && !ch_isspace(*end); end++) {
|
|
if (*end == '(' && end > start && end[-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 (*end == '(') {
|
|
GNodeList sources = LST_INIT;
|
|
if (!Arch_ParseArchive(&start, &sources,
|
|
SCOPE_CMDLINE)) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Error in source archive spec \"%s\"",
|
|
start);
|
|
return false;
|
|
}
|
|
|
|
while (!Lst_IsEmpty(&sources)) {
|
|
GNode *gn = Lst_Dequeue(&sources);
|
|
ParseDependencySource(tOp, gn->name, specType);
|
|
}
|
|
Lst_Done(&sources);
|
|
end = start;
|
|
} else {
|
|
if (*end != '\0') {
|
|
*end = '\0';
|
|
end++;
|
|
}
|
|
|
|
ParseDependencySource(tOp, start, specType);
|
|
}
|
|
pp_skip_whitespace(&end);
|
|
start = end;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* In a dependency line like 'targets: sources', parse the sources.
|
|
*
|
|
* See the tests depsrc-*.mk.
|
|
*/
|
|
static void
|
|
ParseDependencySources(char *const line, char *const cp,
|
|
GNodeType const tOp,
|
|
ParseSpecial const specType,
|
|
SearchPathList ** inout_paths)
|
|
{
|
|
if (line[0] == '\0') {
|
|
ParseDependencySourcesEmpty(specType, *inout_paths);
|
|
} else if (specType == SP_MFLAGS) {
|
|
Main_ParseArgLine(line);
|
|
/*
|
|
* Set the initial character to a null-character so the loop
|
|
* to get sources won't get anything.
|
|
*/
|
|
*line = '\0';
|
|
} else if (specType == SP_SHELL) {
|
|
if (!Job_ParseShell(line)) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"improper shell specification");
|
|
return;
|
|
}
|
|
*line = '\0';
|
|
} else if (specType == SP_NOTPARALLEL || specType == SP_SINGLESHELL ||
|
|
specType == SP_DELETE_ON_ERROR) {
|
|
*line = '\0';
|
|
}
|
|
|
|
/* Now go for the sources. */
|
|
if (specType == SP_SUFFIXES || specType == SP_PATH ||
|
|
specType == SP_INCLUDES || specType == SP_LIBS ||
|
|
specType == SP_NULL || specType == SP_OBJDIR) {
|
|
ParseDependencySourcesSpecial(line, cp, specType,
|
|
*inout_paths);
|
|
if (*inout_paths != NULL) {
|
|
Lst_Free(*inout_paths);
|
|
*inout_paths = NULL;
|
|
}
|
|
if (specType == SP_PATH)
|
|
Dir_SetPATH();
|
|
} else {
|
|
assert(*inout_paths == NULL);
|
|
if (!ParseDependencySourcesMundane(line, cp, specType, tOp))
|
|
return;
|
|
}
|
|
|
|
FindMainTarget();
|
|
}
|
|
|
|
/*
|
|
* Parse a dependency line consisting of targets, followed by a dependency
|
|
* operator, optionally followed by sources.
|
|
*
|
|
* The nodes of the sources are linked as children to the nodes of the
|
|
* targets. Nodes are created as necessary.
|
|
*
|
|
* The operator is applied to each node in the global 'targets' list,
|
|
* which is where the nodes found for the targets are kept, by means of
|
|
* the ParseOp function.
|
|
*
|
|
* The sources are parsed in much the same way as the targets, except
|
|
* that they are expanded using the wildcarding scheme of the C-Shell,
|
|
* and a target is created for each expanded word. Each of the resulting
|
|
* nodes is then linked to each of the targets as one of its children.
|
|
*
|
|
* Certain targets and sources such as .PHONY or .PRECIOUS are handled
|
|
* specially. These are the ones detailed by the specType variable.
|
|
*
|
|
* The storing of transformation rules such as '.c.o' 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.
|
|
*
|
|
* Upon return, the value of the line is unspecified.
|
|
*/
|
|
static void
|
|
ParseDependency(char *line)
|
|
{
|
|
char *cp; /* our current position */
|
|
GNodeType op; /* the operator on the line */
|
|
SearchPathList *paths; /* search paths to alter when parsing
|
|
* a list of .PATH targets */
|
|
GNodeType tOp; /* operator from special target */
|
|
/* target names to be found and added to the targets list */
|
|
StringList curTargs = LST_INIT;
|
|
char *lstart = line;
|
|
|
|
/*
|
|
* specType contains the SPECial TYPE of the current target. It is
|
|
* SP_NOT if the target is unspecial. If it *is* special, however, the
|
|
* children are linked as children of the parent but not vice versa.
|
|
*/
|
|
ParseSpecial specType = SP_NOT;
|
|
|
|
DEBUG1(PARSE, "ParseDependency(%s)\n", line);
|
|
tOp = OP_NONE;
|
|
|
|
paths = NULL;
|
|
|
|
/*
|
|
* First, grind through the targets.
|
|
*/
|
|
/* XXX: don't use 'line' as an iterator variable */
|
|
if (!ParseDependencyTargets(&cp, &line, lstart, &specType, &tOp,
|
|
&paths, &curTargs))
|
|
goto out;
|
|
|
|
/*
|
|
* Don't need the list of target names anymore.
|
|
* The targets themselves are now in the global variable 'targets'.
|
|
*/
|
|
Lst_Done(&curTargs);
|
|
Lst_Init(&curTargs);
|
|
|
|
if (!Lst_IsEmpty(targets))
|
|
ParseDependencyCheckSpec(specType);
|
|
|
|
/*
|
|
* Have now parsed all the target names. Must parse the operator next.
|
|
*/
|
|
if (!ParseDependencyOp(&cp, lstart, &op))
|
|
goto out;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
ApplyDependencyOperator(op);
|
|
|
|
/*
|
|
* Onward to the sources.
|
|
*
|
|
* LINE will now point to the first source word, if any, or the
|
|
* end of the string if not.
|
|
*/
|
|
pp_skip_whitespace(&cp);
|
|
line = cp; /* XXX: 'line' is an inappropriate name */
|
|
|
|
ParseDependencySources(line, cp, tOp, specType, &paths);
|
|
|
|
out:
|
|
if (paths != NULL)
|
|
Lst_Free(paths);
|
|
Lst_Done(&curTargs);
|
|
}
|
|
|
|
typedef struct VarAssignParsed {
|
|
const char *nameStart; /* unexpanded */
|
|
const char *nameEnd; /* before operator adjustment */
|
|
const char *eq; /* the '=' of the assignment operator */
|
|
} VarAssignParsed;
|
|
|
|
/*
|
|
* Determine the assignment operator and adjust the end of the variable
|
|
* name accordingly.
|
|
*/
|
|
static void
|
|
AdjustVarassignOp(const VarAssignParsed *pvar, const char *value,
|
|
VarAssign *out_var)
|
|
{
|
|
const char *op = pvar->eq;
|
|
const char *const name = pvar->nameStart;
|
|
VarAssignOp type;
|
|
|
|
if (op > name && op[-1] == '+') {
|
|
type = VAR_APPEND;
|
|
op--;
|
|
|
|
} else if (op > name && op[-1] == '?') {
|
|
op--;
|
|
type = VAR_DEFAULT;
|
|
|
|
} else if (op > name && op[-1] == ':') {
|
|
op--;
|
|
type = VAR_SUBST;
|
|
|
|
} else if (op > name && op[-1] == '!') {
|
|
op--;
|
|
type = VAR_SHELL;
|
|
|
|
} else {
|
|
type = VAR_NORMAL;
|
|
#ifdef SUNSHCMD
|
|
while (op > name && ch_isspace(op[-1]))
|
|
op--;
|
|
|
|
if (op >= name + 3 && op[-3] == ':' && op[-2] == 's' &&
|
|
op[-1] == 'h') {
|
|
type = VAR_SHELL;
|
|
op -= 3;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
{
|
|
const char *nameEnd = pvar->nameEnd < op ? pvar->nameEnd : op;
|
|
out_var->varname = bmake_strsedup(pvar->nameStart, nameEnd);
|
|
out_var->op = type;
|
|
out_var->value = value;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse a variable assignment, consisting of a single-word variable name,
|
|
* optional whitespace, an assignment operator, optional whitespace and the
|
|
* variable value.
|
|
*
|
|
* 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++ =".
|
|
*
|
|
* Used for both lines in a file and command line arguments.
|
|
*/
|
|
bool
|
|
Parse_IsVar(const char *p, VarAssign *out_var)
|
|
{
|
|
VarAssignParsed pvar;
|
|
const char *firstSpace = NULL;
|
|
int level = 0;
|
|
|
|
cpp_skip_hspace(&p); /* Skip to variable name */
|
|
|
|
/*
|
|
* During parsing, the '+' of the '+=' operator is initially parsed
|
|
* as part of the variable name. It is later corrected, as is the
|
|
* ':sh' modifier. Of these two (nameEnd and op), the earlier one
|
|
* determines the actual end of the variable name.
|
|
*/
|
|
pvar.nameStart = p;
|
|
#ifdef CLEANUP
|
|
pvar.nameEnd = NULL;
|
|
pvar.eq = NULL;
|
|
#endif
|
|
|
|
/*
|
|
* Scan for one of the assignment operators outside a variable
|
|
* expansion.
|
|
*/
|
|
while (*p != '\0') {
|
|
char ch = *p++;
|
|
if (ch == '(' || ch == '{') {
|
|
level++;
|
|
continue;
|
|
}
|
|
if (ch == ')' || ch == '}') {
|
|
level--;
|
|
continue;
|
|
}
|
|
|
|
if (level != 0)
|
|
continue;
|
|
|
|
if (ch == ' ' || ch == '\t')
|
|
if (firstSpace == NULL)
|
|
firstSpace = p - 1;
|
|
while (ch == ' ' || ch == '\t')
|
|
ch = *p++;
|
|
|
|
#ifdef SUNSHCMD
|
|
if (ch == ':' && p[0] == 's' && p[1] == 'h') {
|
|
p += 2;
|
|
continue;
|
|
}
|
|
#endif
|
|
if (ch == '=') {
|
|
pvar.eq = p - 1;
|
|
pvar.nameEnd = firstSpace != NULL ? firstSpace : p - 1;
|
|
cpp_skip_whitespace(&p);
|
|
AdjustVarassignOp(&pvar, p, out_var);
|
|
return true;
|
|
}
|
|
if (*p == '=' &&
|
|
(ch == '+' || ch == ':' || ch == '?' || ch == '!')) {
|
|
pvar.eq = p;
|
|
pvar.nameEnd = firstSpace != NULL ? firstSpace : p;
|
|
p++;
|
|
cpp_skip_whitespace(&p);
|
|
AdjustVarassignOp(&pvar, p, out_var);
|
|
return true;
|
|
}
|
|
if (firstSpace != NULL)
|
|
return false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Check for syntax errors such as unclosed expressions or unknown modifiers.
|
|
*/
|
|
static void
|
|
VarCheckSyntax(VarAssignOp type, const char *uvalue, GNode *scope)
|
|
{
|
|
if (opts.strict) {
|
|
if (type != VAR_SUBST && strchr(uvalue, '$') != NULL) {
|
|
char *expandedValue;
|
|
|
|
(void)Var_Subst(uvalue, scope, VARE_PARSE_ONLY,
|
|
&expandedValue);
|
|
/* TODO: handle errors */
|
|
free(expandedValue);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
VarAssign_EvalSubst(GNode *scope, const char *name, const char *uvalue,
|
|
FStr *out_avalue)
|
|
{
|
|
char *evalue;
|
|
|
|
/*
|
|
* make sure that we set the variable the first time to nothing
|
|
* so that it gets substituted.
|
|
*
|
|
* TODO: Add a test that demonstrates why this code is needed,
|
|
* apart from making the debug log longer.
|
|
*/
|
|
if (!Var_ExistsExpand(scope, name))
|
|
Var_SetExpand(scope, name, "");
|
|
|
|
(void)Var_Subst(uvalue, scope, VARE_KEEP_DOLLAR_UNDEF, &evalue);
|
|
/* TODO: handle errors */
|
|
|
|
Var_SetExpand(scope, name, evalue);
|
|
|
|
*out_avalue = FStr_InitOwn(evalue);
|
|
}
|
|
|
|
static void
|
|
VarAssign_EvalShell(const char *name, const char *uvalue, GNode *scope,
|
|
FStr *out_avalue)
|
|
{
|
|
FStr cmd;
|
|
const char *errfmt;
|
|
char *cmdOut;
|
|
|
|
cmd = FStr_InitRefer(uvalue);
|
|
if (strchr(cmd.str, '$') != NULL) {
|
|
char *expanded;
|
|
(void)Var_Subst(cmd.str, SCOPE_CMDLINE, VARE_UNDEFERR,
|
|
&expanded);
|
|
/* TODO: handle errors */
|
|
cmd = FStr_InitOwn(expanded);
|
|
}
|
|
|
|
cmdOut = Cmd_Exec(cmd.str, &errfmt);
|
|
Var_SetExpand(scope, name, cmdOut);
|
|
*out_avalue = FStr_InitOwn(cmdOut);
|
|
|
|
if (errfmt != NULL)
|
|
Parse_Error(PARSE_WARNING, errfmt, cmd.str);
|
|
|
|
FStr_Done(&cmd);
|
|
}
|
|
|
|
/*
|
|
* Perform a variable assignment.
|
|
*
|
|
* The actual value of the variable is returned in *out_true_avalue.
|
|
* Especially for VAR_SUBST and VAR_SHELL this can differ from the literal
|
|
* value.
|
|
*
|
|
* Return whether the assignment was actually performed, which is usually
|
|
* the case. It is only skipped if the operator is '?=' and the variable
|
|
* already exists.
|
|
*/
|
|
static bool
|
|
VarAssign_Eval(const char *name, VarAssignOp op, const char *uvalue,
|
|
GNode *scope, FStr *out_true_avalue)
|
|
{
|
|
FStr avalue = FStr_InitRefer(uvalue);
|
|
|
|
if (op == VAR_APPEND)
|
|
Var_AppendExpand(scope, name, uvalue);
|
|
else if (op == VAR_SUBST)
|
|
VarAssign_EvalSubst(scope, name, uvalue, &avalue);
|
|
else if (op == VAR_SHELL)
|
|
VarAssign_EvalShell(name, uvalue, scope, &avalue);
|
|
else {
|
|
if (op == VAR_DEFAULT && Var_ExistsExpand(scope, name))
|
|
return false;
|
|
|
|
/* Normal assignment -- just do it. */
|
|
Var_SetExpand(scope, name, uvalue);
|
|
}
|
|
|
|
*out_true_avalue = avalue;
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
VarAssignSpecial(const char *name, const char *avalue)
|
|
{
|
|
if (strcmp(name, MAKEOVERRIDES) == 0)
|
|
Main_ExportMAKEFLAGS(false); /* re-export MAKEFLAGS */
|
|
else if (strcmp(name, ".CURDIR") == 0) {
|
|
/*
|
|
* Someone is being (too?) clever...
|
|
* Let's pretend they know what they are doing and
|
|
* re-initialize the 'cur' CachedDir.
|
|
*/
|
|
Dir_InitCur(avalue);
|
|
Dir_SetPATH();
|
|
} else if (strcmp(name, MAKE_JOB_PREFIX) == 0)
|
|
Job_SetPrefix();
|
|
else if (strcmp(name, MAKE_EXPORTED) == 0)
|
|
Var_ExportVars(avalue);
|
|
}
|
|
|
|
/* Perform the variable variable assignment in the given scope. */
|
|
void
|
|
Parse_Var(VarAssign *var, GNode *scope)
|
|
{
|
|
FStr avalue; /* actual value (maybe expanded) */
|
|
|
|
VarCheckSyntax(var->op, var->value, scope);
|
|
if (VarAssign_Eval(var->varname, var->op, var->value, scope, &avalue)) {
|
|
VarAssignSpecial(var->varname, avalue.str);
|
|
FStr_Done(&avalue);
|
|
}
|
|
|
|
free(var->varname);
|
|
}
|
|
|
|
|
|
/*
|
|
* See if the command possibly calls a sub-make by using the variable
|
|
* expressions ${.MAKE}, ${MAKE} or the plain word "make".
|
|
*/
|
|
static bool
|
|
MaybeSubMake(const char *cmd)
|
|
{
|
|
const char *start;
|
|
|
|
for (start = cmd; *start != '\0'; start++) {
|
|
const char *p = start;
|
|
char endc;
|
|
|
|
/* XXX: What if progname != "make"? */
|
|
if (p[0] == 'm' && p[1] == 'a' && p[2] == 'k' && p[3] == 'e')
|
|
if (start == cmd || !ch_isalnum(p[-1]))
|
|
if (!ch_isalnum(p[4]))
|
|
return true;
|
|
|
|
if (*p != '$')
|
|
continue;
|
|
p++;
|
|
|
|
if (*p == '{')
|
|
endc = '}';
|
|
else if (*p == '(')
|
|
endc = ')';
|
|
else
|
|
continue;
|
|
p++;
|
|
|
|
if (*p == '.') /* Accept either ${.MAKE} or ${MAKE}. */
|
|
p++;
|
|
|
|
if (p[0] == 'M' && p[1] == 'A' && p[2] == 'K' && p[3] == 'E')
|
|
if (p[4] == endc)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Append the command to the target node.
|
|
*
|
|
* The node may be marked as a submake node if the command is determined to
|
|
* be that.
|
|
*/
|
|
static void
|
|
ParseAddCmd(GNode *gn, char *cmd)
|
|
{
|
|
/* Add to last (ie current) cohort for :: targets */
|
|
if ((gn->type & OP_DOUBLEDEP) && gn->cohorts.last != NULL)
|
|
gn = gn->cohorts.last->datum;
|
|
|
|
/* if target already supplied, ignore commands */
|
|
if (!(gn->type & OP_HAS_COMMANDS)) {
|
|
Lst_Append(&gn->commands, cmd);
|
|
if (MaybeSubMake(cmd))
|
|
gn->type |= OP_SUBMAKE;
|
|
ParseMark(gn);
|
|
} else {
|
|
#if 0
|
|
/* XXX: We cannot do this until we fix the tree */
|
|
Lst_Append(&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, (size_t)gn->lineno, PARSE_WARNING,
|
|
"using previous script for \"%s\" defined here",
|
|
gn->name);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add a directory to the path searched for included makefiles bracketed
|
|
* by double-quotes.
|
|
*/
|
|
void
|
|
Parse_AddIncludeDir(const char *dir)
|
|
{
|
|
(void)SearchPath_Add(parseIncPath, dir);
|
|
}
|
|
|
|
/*
|
|
* Handle one of the .[-ds]include directives by remembering the current file
|
|
* and pushing the included file on the stack. After the included file has
|
|
* finished, parsing continues with the including file; see Parse_SetInput
|
|
* and ParseEOF.
|
|
*
|
|
* System includes are looked up in sysIncPath, any other includes are looked
|
|
* up in the parsedir and then in the directories specified by the -I command
|
|
* line options.
|
|
*/
|
|
static void
|
|
IncludeFile(char *file, bool isSystem, bool depinc, bool silent)
|
|
{
|
|
struct loadedfile *lf;
|
|
char *fullname; /* full pathname of file */
|
|
char *newName;
|
|
char *slash, *incdir;
|
|
int fd;
|
|
int i;
|
|
|
|
fullname = file[0] == '/' ? bmake_strdup(file) : NULL;
|
|
|
|
if (fullname == NULL && !isSystem) {
|
|
/*
|
|
* Include files contained in double-quotes are first searched
|
|
* 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 file.
|
|
*/
|
|
|
|
incdir = bmake_strdup(CurFile()->fname);
|
|
slash = strrchr(incdir, '/');
|
|
if (slash != NULL) {
|
|
*slash = '\0';
|
|
/*
|
|
* Now do lexical processing of leading "../" on the
|
|
* filename.
|
|
*/
|
|
for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
|
|
slash = strrchr(incdir + 1, '/');
|
|
if (slash == NULL || strcmp(slash, "/..") == 0)
|
|
break;
|
|
*slash = '\0';
|
|
}
|
|
newName = str_concat3(incdir, "/", file + i);
|
|
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.
|
|
*/
|
|
const char *suff;
|
|
SearchPath *suffPath = NULL;
|
|
|
|
if ((suff = strrchr(file, '.')) != NULL) {
|
|
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
|
|
*/
|
|
SearchPath *path = Lst_IsEmpty(&sysIncPath->dirs)
|
|
? defSysIncPath : sysIncPath;
|
|
fullname = Dir_FindFile(file, path);
|
|
}
|
|
|
|
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);
|
|
|
|
/* Start reading from this file next */
|
|
Parse_SetInput(fullname, 0, -1, loadedfile_readMore, lf);
|
|
CurFile()->lf = lf;
|
|
if (depinc)
|
|
doing_depend = depinc; /* only turn it on */
|
|
}
|
|
|
|
static void
|
|
ParseInclude(char *directive)
|
|
{
|
|
char endc; /* the character which ends the file spec */
|
|
char *cp; /* current position in file spec */
|
|
bool silent = directive[0] != 'i';
|
|
char *file = directive + (silent ? 8 : 7);
|
|
|
|
/* Skip to delimiter character so we know where to look */
|
|
pp_skip_hspace(&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 != '\0' && *cp != endc; cp++)
|
|
continue;
|
|
|
|
if (*cp != endc) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unclosed .include filename. '%c' expected", endc);
|
|
return;
|
|
}
|
|
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Substitute for any variables in the filename before trying to
|
|
* find the file.
|
|
*/
|
|
(void)Var_Subst(file, SCOPE_CMDLINE, VARE_WANTRES, &file);
|
|
/* TODO: handle errors */
|
|
|
|
IncludeFile(file, endc == '>', directive[0] == 'd', silent);
|
|
free(file);
|
|
}
|
|
|
|
/*
|
|
* Split filename into dirname + basename, then assign these to the
|
|
* given variables.
|
|
*/
|
|
static void
|
|
SetFilenameVars(const char *filename, const char *dirvar, const char *filevar)
|
|
{
|
|
const char *slash, *basename;
|
|
FStr dirname;
|
|
|
|
slash = strrchr(filename, '/');
|
|
if (slash == NULL) {
|
|
dirname = FStr_InitRefer(curdir);
|
|
basename = filename;
|
|
} else {
|
|
dirname = FStr_InitOwn(bmake_strsedup(filename, slash));
|
|
basename = slash + 1;
|
|
}
|
|
|
|
Global_SetExpand(dirvar, dirname.str);
|
|
Global_SetExpand(filevar, basename);
|
|
|
|
DEBUG5(PARSE, "%s: ${%s} = `%s' ${%s} = `%s'\n",
|
|
__func__, dirvar, dirname.str, filevar, basename);
|
|
FStr_Done(&dirname);
|
|
}
|
|
|
|
/*
|
|
* Return the immediately including file.
|
|
*
|
|
* This is made complicated since the .for loop is implemented as a special
|
|
* kind of .include; see For_Run.
|
|
*/
|
|
static const char *
|
|
GetActuallyIncludingFile(void)
|
|
{
|
|
size_t i;
|
|
const IFile *incs = GetInclude(0);
|
|
|
|
for (i = includes.len; i >= 2; i--)
|
|
if (!incs[i - 1].fromForLoop)
|
|
return incs[i - 2].fname;
|
|
return NULL;
|
|
}
|
|
|
|
/* Set .PARSEDIR, .PARSEFILE, .INCLUDEDFROMDIR and .INCLUDEDFROMFILE. */
|
|
static void
|
|
ParseSetParseFile(const char *filename)
|
|
{
|
|
const char *including;
|
|
|
|
SetFilenameVars(filename, ".PARSEDIR", ".PARSEFILE");
|
|
|
|
including = GetActuallyIncludingFile();
|
|
if (including != NULL) {
|
|
SetFilenameVars(including,
|
|
".INCLUDEDFROMDIR", ".INCLUDEDFROMFILE");
|
|
} else {
|
|
Global_Delete(".INCLUDEDFROMDIR");
|
|
Global_Delete(".INCLUDEDFROMFILE");
|
|
}
|
|
}
|
|
|
|
static bool
|
|
StrContainsWord(const char *str, const char *word)
|
|
{
|
|
size_t strLen = strlen(str);
|
|
size_t wordLen = strlen(word);
|
|
const char *p, *end;
|
|
|
|
if (strLen < wordLen)
|
|
return false; /* str is too short to contain word */
|
|
|
|
end = str + strLen - wordLen;
|
|
for (p = str; p != NULL; p = strchr(p, ' ')) {
|
|
if (*p == ' ')
|
|
p++;
|
|
if (p > end)
|
|
return false; /* cannot contain word */
|
|
|
|
if (memcmp(p, word, wordLen) == 0 &&
|
|
(p[wordLen] == '\0' || p[wordLen] == ' '))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* XXX: Searching through a set of words with this linear search is
|
|
* inefficient for variables that contain thousands of words.
|
|
*
|
|
* XXX: The paths in this list don't seem to be normalized in any way.
|
|
*/
|
|
static bool
|
|
VarContainsWord(const char *varname, const char *word)
|
|
{
|
|
FStr val = Var_Value(SCOPE_GLOBAL, varname);
|
|
bool found = val.str != NULL && StrContainsWord(val.str, word);
|
|
FStr_Done(&val);
|
|
return found;
|
|
}
|
|
|
|
/*
|
|
* Track the makefiles we read - so makefiles can set dependencies on them.
|
|
* Avoid adding anything more than once.
|
|
*
|
|
* Time complexity: O(n) per call, in total O(n^2), where n is the number
|
|
* of makefiles that have been loaded.
|
|
*/
|
|
static void
|
|
ParseTrackInput(const char *name)
|
|
{
|
|
if (!VarContainsWord(MAKE_MAKEFILES, name))
|
|
Global_Append(MAKE_MAKEFILES, name);
|
|
}
|
|
|
|
|
|
/*
|
|
* Start parsing from the given source.
|
|
*
|
|
* The given file is added to the includes stack.
|
|
*/
|
|
void
|
|
Parse_SetInput(const char *name, int lineno, int fd,
|
|
ReadMoreProc readMore, void *readMoreArg)
|
|
{
|
|
IFile *curFile;
|
|
char *buf;
|
|
size_t len;
|
|
bool fromForLoop = name == NULL;
|
|
|
|
if (fromForLoop)
|
|
name = CurFile()->fname;
|
|
else
|
|
ParseTrackInput(name);
|
|
|
|
DEBUG3(PARSE, "Parse_SetInput: %s %s, line %d\n",
|
|
readMore == loadedfile_readMore ? "file" : ".for loop in",
|
|
name, lineno);
|
|
|
|
if (fd == -1 && readMore == NULL)
|
|
/* sanity */
|
|
return;
|
|
|
|
curFile = Vector_Push(&includes);
|
|
curFile->fname = bmake_strdup(name);
|
|
curFile->fromForLoop = fromForLoop;
|
|
curFile->lineno = lineno;
|
|
curFile->first_lineno = lineno;
|
|
curFile->readMore = readMore;
|
|
curFile->readMoreArg = readMoreArg;
|
|
curFile->lf = NULL;
|
|
curFile->depending = doing_depend; /* restore this on EOF */
|
|
|
|
assert(readMore != NULL);
|
|
|
|
/* Get first block of input data */
|
|
buf = curFile->readMore(curFile->readMoreArg, &len);
|
|
if (buf == NULL) {
|
|
/* Was all a waste of time ... */
|
|
if (curFile->fname != NULL)
|
|
free(curFile->fname);
|
|
free(curFile);
|
|
return;
|
|
}
|
|
curFile->buf_freeIt = buf;
|
|
curFile->buf_ptr = buf;
|
|
curFile->buf_end = buf + len;
|
|
|
|
curFile->cond_depth = Cond_save_depth();
|
|
ParseSetParseFile(name);
|
|
}
|
|
|
|
/* Check if the directive is an include directive. */
|
|
static bool
|
|
IsInclude(const char *dir, bool sysv)
|
|
{
|
|
if (dir[0] == 's' || dir[0] == '-' || (dir[0] == 'd' && !sysv))
|
|
dir++;
|
|
|
|
if (strncmp(dir, "include", 7) != 0)
|
|
return false;
|
|
|
|
/* Space is not mandatory for BSD .include */
|
|
return !sysv || ch_isspace(dir[7]);
|
|
}
|
|
|
|
|
|
#ifdef SYSVINCLUDE
|
|
/* Check if the line is a SYSV include directive. */
|
|
static bool
|
|
IsSysVInclude(const char *line)
|
|
{
|
|
const char *p;
|
|
|
|
if (!IsInclude(line, true))
|
|
return false;
|
|
|
|
/* Avoid interpreting a dependency line as an include */
|
|
for (p = line; (p = strchr(p, ':')) != NULL;) {
|
|
|
|
/* end of line -> it's a dependency */
|
|
if (*++p == '\0')
|
|
return false;
|
|
|
|
/* '::' operator or ': ' -> it's a dependency */
|
|
if (*p == ':' || ch_isspace(*p))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Push to another file. The line points to the word "include". */
|
|
static void
|
|
ParseTraditionalInclude(char *line)
|
|
{
|
|
char *cp; /* current position in file spec */
|
|
bool done = false;
|
|
bool silent = line[0] != 'i';
|
|
char *file = line + (silent ? 8 : 7);
|
|
char *all_files;
|
|
|
|
DEBUG2(PARSE, "%s: %s\n", __func__, file);
|
|
|
|
pp_skip_whitespace(&file);
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
(void)Var_Subst(file, SCOPE_CMDLINE, VARE_WANTRES, &all_files);
|
|
/* TODO: handle errors */
|
|
|
|
if (*file == '\0') {
|
|
Parse_Error(PARSE_FATAL, "Filename missing from \"include\"");
|
|
goto out;
|
|
}
|
|
|
|
for (file = all_files; !done; file = cp + 1) {
|
|
/* Skip to end of line or next whitespace */
|
|
for (cp = file; *cp != '\0' && !ch_isspace(*cp); cp++)
|
|
continue;
|
|
|
|
if (*cp != '\0')
|
|
*cp = '\0';
|
|
else
|
|
done = true;
|
|
|
|
IncludeFile(file, false, false, silent);
|
|
}
|
|
out:
|
|
free(all_files);
|
|
}
|
|
#endif
|
|
|
|
#ifdef GMAKEEXPORT
|
|
/* Parse "export <variable>=<value>", and actually export it. */
|
|
static void
|
|
ParseGmakeExport(char *line)
|
|
{
|
|
char *variable = line + 6;
|
|
char *value;
|
|
|
|
DEBUG2(PARSE, "%s: %s\n", __func__, variable);
|
|
|
|
pp_skip_whitespace(&variable);
|
|
|
|
for (value = variable; *value != '\0' && *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.
|
|
*/
|
|
(void)Var_Subst(value, SCOPE_CMDLINE, VARE_WANTRES, &value);
|
|
/* TODO: handle errors */
|
|
|
|
setenv(variable, value, 1);
|
|
free(value);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Called when EOF is reached in the current file. If we were reading an
|
|
* include file or a .for loop, the includes stack is popped and things set
|
|
* up to go back to reading the previous file at the previous location.
|
|
*
|
|
* Results:
|
|
* true to continue parsing, i.e. it had only reached the end of an
|
|
* included file, false if the main file has been parsed completely.
|
|
*/
|
|
static bool
|
|
ParseEOF(void)
|
|
{
|
|
char *ptr;
|
|
size_t len;
|
|
IFile *curFile = CurFile();
|
|
|
|
assert(curFile->readMore != NULL);
|
|
|
|
doing_depend = curFile->depending; /* restore this */
|
|
/* get next input buffer, if any */
|
|
ptr = curFile->readMore(curFile->readMoreArg, &len);
|
|
curFile->buf_ptr = ptr;
|
|
curFile->buf_freeIt = ptr;
|
|
curFile->buf_end = ptr == NULL ? NULL : ptr + len;
|
|
curFile->lineno = curFile->first_lineno;
|
|
if (ptr != NULL)
|
|
return true; /* Iterate again */
|
|
|
|
/* 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->buf_freeIt);
|
|
Vector_Pop(&includes);
|
|
|
|
if (includes.len == 0) {
|
|
/* We've run out of input */
|
|
Global_Delete(".PARSEDIR");
|
|
Global_Delete(".PARSEFILE");
|
|
Global_Delete(".INCLUDEDFROMDIR");
|
|
Global_Delete(".INCLUDEDFROMFILE");
|
|
return false;
|
|
}
|
|
|
|
curFile = CurFile();
|
|
DEBUG2(PARSE, "ParseEOF: returning to file %s, line %d\n",
|
|
curFile->fname, curFile->lineno);
|
|
|
|
ParseSetParseFile(curFile->fname);
|
|
return true;
|
|
}
|
|
|
|
typedef enum ParseRawLineResult {
|
|
PRLR_LINE,
|
|
PRLR_EOF,
|
|
PRLR_ERROR
|
|
} ParseRawLineResult;
|
|
|
|
/*
|
|
* Parse until the end of a line, taking into account lines that end with
|
|
* backslash-newline.
|
|
*/
|
|
static ParseRawLineResult
|
|
ParseRawLine(IFile *curFile, char **out_line, char **out_line_end,
|
|
char **out_firstBackslash, char **out_firstComment)
|
|
{
|
|
char *line = curFile->buf_ptr;
|
|
char *p = line;
|
|
char *line_end = line;
|
|
char *firstBackslash = NULL;
|
|
char *firstComment = NULL;
|
|
ParseRawLineResult res = PRLR_LINE;
|
|
|
|
curFile->lineno++;
|
|
|
|
for (;;) {
|
|
char ch;
|
|
|
|
if (p == curFile->buf_end) {
|
|
res = PRLR_EOF;
|
|
break;
|
|
}
|
|
|
|
ch = *p;
|
|
if (ch == '\0' ||
|
|
(ch == '\\' && p + 1 < curFile->buf_end && p[1] == '\0')) {
|
|
Parse_Error(PARSE_FATAL, "Zero byte read from file");
|
|
return PRLR_ERROR;
|
|
}
|
|
|
|
/* Treat next character after '\' as literal. */
|
|
if (ch == '\\') {
|
|
if (firstBackslash == NULL)
|
|
firstBackslash = p;
|
|
if (p[1] == '\n') {
|
|
curFile->lineno++;
|
|
if (p + 2 == curFile->buf_end) {
|
|
line_end = p;
|
|
*line_end = '\n';
|
|
p += 2;
|
|
continue;
|
|
}
|
|
}
|
|
p += 2;
|
|
line_end = p;
|
|
assert(p <= curFile->buf_end);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Remember the first '#' for comment stripping, unless
|
|
* the previous char was '[', as in the modifier ':[#]'.
|
|
*/
|
|
if (ch == '#' && firstComment == NULL &&
|
|
!(p > line && p[-1] == '['))
|
|
firstComment = line_end;
|
|
|
|
p++;
|
|
if (ch == '\n')
|
|
break;
|
|
|
|
/* We are not interested in trailing whitespace. */
|
|
if (!ch_isspace(ch))
|
|
line_end = p;
|
|
}
|
|
|
|
*out_line = line;
|
|
curFile->buf_ptr = p;
|
|
*out_line_end = line_end;
|
|
*out_firstBackslash = firstBackslash;
|
|
*out_firstComment = firstComment;
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* Beginning at start, unescape '\#' to '#' and replace backslash-newline
|
|
* with a single space.
|
|
*/
|
|
static void
|
|
UnescapeBackslash(char *line, char *start)
|
|
{
|
|
char *src = start;
|
|
char *dst = start;
|
|
char *spaceStart = line;
|
|
|
|
for (;;) {
|
|
char ch = *src++;
|
|
if (ch != '\\') {
|
|
if (ch == '\0')
|
|
break;
|
|
*dst++ = ch;
|
|
continue;
|
|
}
|
|
|
|
ch = *src++;
|
|
if (ch == '\0') {
|
|
/* Delete '\\' at end of buffer */
|
|
dst--;
|
|
break;
|
|
}
|
|
|
|
/* Delete '\\' from before '#' on non-command lines */
|
|
if (ch == '#' && line[0] != '\t') {
|
|
*dst++ = ch;
|
|
continue;
|
|
}
|
|
|
|
if (ch != '\n') {
|
|
/* Leave '\\' in buffer for later */
|
|
*dst++ = '\\';
|
|
/*
|
|
* Make sure we don't delete an escaped ' ' from the
|
|
* line end.
|
|
*/
|
|
spaceStart = dst + 1;
|
|
*dst++ = ch;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Escaped '\n' -- replace following whitespace with a single
|
|
* ' '.
|
|
*/
|
|
pp_skip_hspace(&src);
|
|
*dst++ = ' ';
|
|
}
|
|
|
|
/* Delete any trailing spaces - eg from empty continuations */
|
|
while (dst > spaceStart && ch_isspace(dst[-1]))
|
|
dst--;
|
|
*dst = '\0';
|
|
}
|
|
|
|
typedef enum GetLineMode {
|
|
/*
|
|
* Return the next line that is neither empty nor a comment.
|
|
* Backslash line continuations are folded into a single space.
|
|
* A trailing comment, if any, is discarded.
|
|
*/
|
|
GLM_NONEMPTY,
|
|
|
|
/*
|
|
* Return the next line, even if it is empty or a comment.
|
|
* Preserve backslash-newline to keep the line numbers correct.
|
|
*
|
|
* Used in .for loops to collect the body of the loop while waiting
|
|
* for the corresponding .endfor.
|
|
*/
|
|
GLM_FOR_BODY,
|
|
|
|
/*
|
|
* Return the next line that starts with a dot.
|
|
* Backslash line continuations are folded into a single space.
|
|
* A trailing comment, if any, is discarded.
|
|
*
|
|
* Used in .if directives to skip over irrelevant branches while
|
|
* waiting for the corresponding .endif.
|
|
*/
|
|
GLM_DOT
|
|
} GetLineMode;
|
|
|
|
/* Return the next "interesting" logical line from the current file. */
|
|
static char *
|
|
ParseGetLine(GetLineMode mode)
|
|
{
|
|
IFile *curFile = CurFile();
|
|
char *line;
|
|
char *line_end;
|
|
char *firstBackslash;
|
|
char *firstComment;
|
|
|
|
for (;;) {
|
|
ParseRawLineResult res = ParseRawLine(curFile,
|
|
&line, &line_end, &firstBackslash, &firstComment);
|
|
if (res == PRLR_ERROR)
|
|
return NULL;
|
|
|
|
if (line_end == line || firstComment == line) {
|
|
if (res == PRLR_EOF)
|
|
return NULL;
|
|
if (mode != GLM_FOR_BODY)
|
|
continue;
|
|
}
|
|
|
|
/* We now have a line of data */
|
|
assert(ch_isspace(*line_end));
|
|
*line_end = '\0';
|
|
|
|
if (mode == GLM_FOR_BODY)
|
|
return line; /* Don't join the physical lines. */
|
|
|
|
if (mode == GLM_DOT && line[0] != '.')
|
|
continue;
|
|
break;
|
|
}
|
|
|
|
/* Brutally ignore anything after a non-escaped '#' in non-commands. */
|
|
if (firstComment != NULL && line[0] != '\t')
|
|
*firstComment = '\0';
|
|
|
|
/* If we didn't see a '\\' then the in-situ data is fine. */
|
|
if (firstBackslash == NULL)
|
|
return line;
|
|
|
|
/* Remove escapes from '\n' and '#' */
|
|
UnescapeBackslash(line, firstBackslash);
|
|
|
|
return line;
|
|
}
|
|
|
|
static bool
|
|
ParseSkippedBranches(void)
|
|
{
|
|
char *line;
|
|
|
|
while ((line = ParseGetLine(GLM_DOT)) != NULL) {
|
|
if (Cond_EvalLine(line) == COND_PARSE)
|
|
break;
|
|
/*
|
|
* TODO: Check for typos in .elif directives
|
|
* such as .elsif or .elseif.
|
|
*
|
|
* This check will probably duplicate some of
|
|
* the code in ParseLine. Most of the code
|
|
* there cannot apply, only ParseVarassign and
|
|
* ParseDependencyLine can, and to prevent code
|
|
* duplication, these would need to be called
|
|
* with a flag called onlyCheckSyntax.
|
|
*
|
|
* See directive-elif.mk for details.
|
|
*/
|
|
}
|
|
|
|
return line != NULL;
|
|
}
|
|
|
|
static bool
|
|
ParseForLoop(const char *line)
|
|
{
|
|
int rval;
|
|
int firstLineno;
|
|
|
|
rval = For_Eval(line);
|
|
if (rval == 0)
|
|
return false; /* Not a .for line */
|
|
if (rval < 0)
|
|
return true; /* Syntax error - error printed, ignore line */
|
|
|
|
firstLineno = CurFile()->lineno;
|
|
|
|
/* Accumulate loop lines until matching .endfor */
|
|
do {
|
|
line = ParseGetLine(GLM_FOR_BODY);
|
|
if (line == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unexpected end of file in for loop.");
|
|
break;
|
|
}
|
|
} while (For_Accum(line));
|
|
|
|
For_Run(firstLineno); /* Stash each iteration as a new 'input file' */
|
|
|
|
return true; /* Read next line from for-loop buffer */
|
|
}
|
|
|
|
/*
|
|
* Read an entire line from the input file.
|
|
*
|
|
* Empty lines, .if and .for are completely handled by this function,
|
|
* leaving only variable assignments, other directives, dependency lines
|
|
* and shell commands to the caller.
|
|
*
|
|
* Results:
|
|
* A line without its newline and without any trailing whitespace,
|
|
* or NULL.
|
|
*/
|
|
static char *
|
|
ParseReadLine(void)
|
|
{
|
|
char *line;
|
|
|
|
for (;;) {
|
|
line = ParseGetLine(GLM_NONEMPTY);
|
|
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_EvalLine(line)) {
|
|
case COND_SKIP:
|
|
if (!ParseSkippedBranches())
|
|
return NULL;
|
|
continue;
|
|
case COND_PARSE:
|
|
continue;
|
|
case COND_INVALID: /* Not a conditional line */
|
|
if (ParseForLoop(line))
|
|
continue;
|
|
break;
|
|
}
|
|
return line;
|
|
}
|
|
}
|
|
|
|
static void
|
|
FinishDependencyGroup(void)
|
|
{
|
|
GNodeListNode *ln;
|
|
|
|
if (targets == NULL)
|
|
return;
|
|
|
|
for (ln = targets->first; ln != NULL; ln = ln->next) {
|
|
GNode *gn = ln->datum;
|
|
|
|
Suff_EndTransform(gn);
|
|
|
|
/*
|
|
* Mark the target as already having commands if it does, to
|
|
* keep from having shell commands on multiple dependency
|
|
* lines.
|
|
*/
|
|
if (!Lst_IsEmpty(&gn->commands))
|
|
gn->type |= OP_HAS_COMMANDS;
|
|
}
|
|
|
|
Lst_Free(targets);
|
|
targets = NULL;
|
|
}
|
|
|
|
/* Add the command to each target from the current dependency spec. */
|
|
static void
|
|
ParseLine_ShellCommand(const char *p)
|
|
{
|
|
cpp_skip_whitespace(&p);
|
|
if (*p == '\0')
|
|
return; /* skip empty commands */
|
|
|
|
if (targets == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unassociated shell command \"%s\"", p);
|
|
return;
|
|
}
|
|
|
|
{
|
|
char *cmd = bmake_strdup(p);
|
|
GNodeListNode *ln;
|
|
|
|
for (ln = targets->first; ln != NULL; ln = ln->next) {
|
|
GNode *gn = ln->datum;
|
|
ParseAddCmd(gn, cmd);
|
|
}
|
|
#ifdef CLEANUP
|
|
Lst_Append(&targCmds, cmd);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
MAKE_INLINE bool
|
|
IsDirective(const char *dir, size_t dirlen, const char *name)
|
|
{
|
|
return dirlen == strlen(name) && memcmp(dir, name, dirlen) == 0;
|
|
}
|
|
|
|
/*
|
|
* See if the line starts with one of the known directives, and if so, handle
|
|
* the directive.
|
|
*/
|
|
static bool
|
|
ParseDirective(char *line)
|
|
{
|
|
char *cp = line + 1;
|
|
const char *dir, *arg;
|
|
size_t dirlen;
|
|
|
|
pp_skip_whitespace(&cp);
|
|
if (IsInclude(cp, false)) {
|
|
ParseInclude(cp);
|
|
return true;
|
|
}
|
|
|
|
dir = cp;
|
|
while (ch_isalpha(*cp) || *cp == '-')
|
|
cp++;
|
|
dirlen = (size_t)(cp - dir);
|
|
|
|
if (*cp != '\0' && !ch_isspace(*cp))
|
|
return false;
|
|
|
|
pp_skip_whitespace(&cp);
|
|
arg = cp;
|
|
|
|
if (IsDirective(dir, dirlen, "undef")) {
|
|
Var_Undef(cp);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "export")) {
|
|
Var_Export(VEM_PLAIN, arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "export-env")) {
|
|
Var_Export(VEM_ENV, arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "export-literal")) {
|
|
Var_Export(VEM_LITERAL, arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "unexport")) {
|
|
Var_UnExport(false, arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "unexport-env")) {
|
|
Var_UnExport(true, arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "info")) {
|
|
ParseMessage(PARSE_INFO, "info", arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "warning")) {
|
|
ParseMessage(PARSE_WARNING, "warning", arg);
|
|
return true;
|
|
} else if (IsDirective(dir, dirlen, "error")) {
|
|
ParseMessage(PARSE_FATAL, "error", arg);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
ParseVarassign(const char *line)
|
|
{
|
|
VarAssign var;
|
|
|
|
if (!Parse_IsVar(line, &var))
|
|
return false;
|
|
|
|
FinishDependencyGroup();
|
|
Parse_Var(&var, SCOPE_GLOBAL);
|
|
return true;
|
|
}
|
|
|
|
static char *
|
|
FindSemicolon(char *p)
|
|
{
|
|
int level = 0;
|
|
|
|
for (; *p != '\0'; p++) {
|
|
if (*p == '\\' && p[1] != '\0') {
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
if (*p == '$' && (p[1] == '(' || p[1] == '{'))
|
|
level++;
|
|
else if (level > 0 && (*p == ')' || *p == '}'))
|
|
level--;
|
|
else if (level == 0 && *p == ';')
|
|
break;
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* dependency -> target... op [source...] [';' command]
|
|
* op -> ':' | '::' | '!'
|
|
*/
|
|
static void
|
|
ParseDependencyLine(char *line)
|
|
{
|
|
VarEvalMode emode;
|
|
char *expanded_line;
|
|
const char *shellcmd = NULL;
|
|
|
|
/*
|
|
* For some reason - probably to make the parser impossible -
|
|
* a ';' can be used to separate commands from dependencies.
|
|
* Attempt to avoid ';' inside substitution patterns.
|
|
*/
|
|
{
|
|
char *semicolon = FindSemicolon(line);
|
|
if (*semicolon != '\0') {
|
|
/* Terminate the dependency list at the ';' */
|
|
*semicolon = '\0';
|
|
shellcmd = semicolon + 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We now know it's a dependency line so it needs to have all
|
|
* variables expanded before being parsed.
|
|
*
|
|
* XXX: Ideally the dependency line would first be split into
|
|
* its left-hand side, dependency operator and right-hand side,
|
|
* and then each side would be expanded on its own. This would
|
|
* allow for the left-hand side to allow only defined variables
|
|
* and to allow variables on the right-hand side to be undefined
|
|
* as well.
|
|
*
|
|
* Parsing the line first would also prevent that targets
|
|
* generated from variable expressions are interpreted as the
|
|
* dependency operator, such as in "target${:U\:} middle: source",
|
|
* in which the middle is interpreted as a source, not a target.
|
|
*/
|
|
|
|
/* In lint mode, allow undefined variables to appear in
|
|
* dependency lines.
|
|
*
|
|
* Ideally, only the right-hand side would allow undefined
|
|
* variables since it is common to have optional dependencies.
|
|
* Having undefined variables on the left-hand side is more
|
|
* unusual though. Since both sides are expanded in a single
|
|
* pass, there is not much choice what to do here.
|
|
*
|
|
* In normal mode, it does not matter whether undefined
|
|
* variables are allowed or not since as of 2020-09-14,
|
|
* Var_Parse does not print any parse errors in such a case.
|
|
* It simply returns the special empty string var_Error,
|
|
* which cannot be detected in the result of Var_Subst. */
|
|
emode = opts.strict ? VARE_WANTRES : VARE_UNDEFERR;
|
|
(void)Var_Subst(line, SCOPE_CMDLINE, emode, &expanded_line);
|
|
/* TODO: handle errors */
|
|
|
|
/* Need a fresh list for the target nodes */
|
|
if (targets != NULL)
|
|
Lst_Free(targets);
|
|
targets = Lst_New();
|
|
|
|
ParseDependency(expanded_line);
|
|
free(expanded_line);
|
|
|
|
if (shellcmd != NULL)
|
|
ParseLine_ShellCommand(shellcmd);
|
|
}
|
|
|
|
static void
|
|
ParseLine(char *line)
|
|
{
|
|
/*
|
|
* Lines that begin with '.' can be pretty much anything:
|
|
* - directives like '.include' or '.if',
|
|
* - suffix rules like '.c.o:',
|
|
* - dependencies for filenames that start with '.',
|
|
* - variable assignments like '.tmp=value'.
|
|
*/
|
|
if (line[0] == '.' && ParseDirective(line))
|
|
return;
|
|
|
|
if (line[0] == '\t') {
|
|
ParseLine_ShellCommand(line + 1);
|
|
return;
|
|
}
|
|
|
|
#ifdef SYSVINCLUDE
|
|
if (IsSysVInclude(line)) {
|
|
/*
|
|
* It's an S3/S5-style "include".
|
|
*/
|
|
ParseTraditionalInclude(line);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
#ifdef GMAKEEXPORT
|
|
if (strncmp(line, "export", 6) == 0 && ch_isspace(line[6]) &&
|
|
strchr(line, ':') == NULL) {
|
|
/*
|
|
* It's a Gmake "export".
|
|
*/
|
|
ParseGmakeExport(line);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (ParseVarassign(line))
|
|
return;
|
|
|
|
FinishDependencyGroup();
|
|
|
|
ParseDependencyLine(line);
|
|
}
|
|
|
|
/*
|
|
* Parse a top-level makefile, incorporating its content into the global
|
|
* dependency graph.
|
|
*
|
|
* Input:
|
|
* name The name of the file being read
|
|
* fd The open file to parse; will be closed at the end
|
|
*/
|
|
void
|
|
Parse_File(const char *name, int fd)
|
|
{
|
|
char *line; /* the line we're working on */
|
|
struct loadedfile *lf;
|
|
|
|
lf = loadfile(name, fd);
|
|
|
|
assert(targets == NULL);
|
|
|
|
if (name == NULL)
|
|
name = "(stdin)";
|
|
|
|
Parse_SetInput(name, 0, -1, loadedfile_readMore, lf);
|
|
CurFile()->lf = lf;
|
|
|
|
do {
|
|
while ((line = ParseReadLine()) != NULL) {
|
|
DEBUG2(PARSE, "ParseReadLine (%d): '%s'\n",
|
|
CurFile()->lineno, line);
|
|
ParseLine(line);
|
|
}
|
|
/* Reached EOF, but it may be just EOF of an include file. */
|
|
} while (ParseEOF());
|
|
|
|
FinishDependencyGroup();
|
|
|
|
if (fatals != 0) {
|
|
(void)fflush(stdout);
|
|
(void)fprintf(stderr,
|
|
"%s: Fatal errors encountered -- cannot continue",
|
|
progname);
|
|
PrintOnError(NULL, NULL);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Initialize the parsing module. */
|
|
void
|
|
Parse_Init(void)
|
|
{
|
|
mainNode = NULL;
|
|
parseIncPath = SearchPath_New();
|
|
sysIncPath = SearchPath_New();
|
|
defSysIncPath = SearchPath_New();
|
|
Vector_Init(&includes, sizeof(IFile));
|
|
}
|
|
|
|
/* Clean up the parsing module. */
|
|
void
|
|
Parse_End(void)
|
|
{
|
|
#ifdef CLEANUP
|
|
Lst_DoneCall(&targCmds, free);
|
|
assert(targets == NULL);
|
|
SearchPath_Free(defSysIncPath);
|
|
SearchPath_Free(sysIncPath);
|
|
SearchPath_Free(parseIncPath);
|
|
assert(includes.len == 0);
|
|
Vector_Done(&includes);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Return a list containing the single main target to create.
|
|
* If no such target exists, we Punt with an obnoxious error message.
|
|
*/
|
|
void
|
|
Parse_MainName(GNodeList *mainList)
|
|
{
|
|
if (mainNode == NULL)
|
|
Punt("no target to make.");
|
|
|
|
Lst_Append(mainList, mainNode);
|
|
if (mainNode->type & OP_DOUBLEDEP)
|
|
Lst_AppendAll(mainList, &mainNode->cohorts);
|
|
|
|
Global_Append(".TARGETS", mainNode->name);
|
|
}
|
|
|
|
int
|
|
Parse_GetFatals(void)
|
|
{
|
|
return fatals;
|
|
}
|