2631 lines
69 KiB
C
2631 lines
69 KiB
C
/*
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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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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
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#endif
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static const char rcsid[] =
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"$Id: parse.c,v 1.18 1997/07/24 06:58:08 charnier Exp $";
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#endif /* not lint */
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/*-
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* parse.c --
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* Functions to parse a makefile.
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*
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* One function, Parse_Init, must be called before any functions
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* in this module are used. After that, the function Parse_File is the
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* main entry point and controls most of the other functions in this
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* module.
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*
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* Most important structures are kept in Lsts. Directories for
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* the #include "..." function are kept in the 'parseIncPath' Lst, while
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* those for the #include <...> are kept in the 'sysIncPath' Lst. The
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* targets currently being defined are kept in the 'targets' Lst.
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*
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* The variables 'fname' and 'lineno' are used to track the name
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* of the current file and the line number in that file so that error
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* messages can be more meaningful.
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*
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* Interface:
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* Parse_Init Initialization function which must be
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* called before anything else in this module
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* is used.
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*
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* Parse_End Cleanup the module
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*
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* Parse_File Function used to parse a makefile. It must
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* be given the name of the file, which should
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* already have been opened, and a function
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* to call to read a character from the file.
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*
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* Parse_IsVar Returns TRUE if the given line is a
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* variable assignment. Used by MainParseArgs
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* to determine if an argument is a target
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* or a variable assignment. Used internally
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* for pretty much the same thing...
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*
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* Parse_Error Function called when an error occurs in
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* parsing. Used by the variable and
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* conditional modules.
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* Parse_MainName Returns a Lst of the main target to create.
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*/
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include "make.h"
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#include "hash.h"
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#include "dir.h"
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#include "job.h"
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#include "buf.h"
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#include "pathnames.h"
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/*
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* These values are returned by ParseEOF to tell Parse_File whether to
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* CONTINUE parsing, i.e. it had only reached the end of an include file,
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* or if it's DONE.
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*/
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#define CONTINUE 1
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#define DONE 0
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static Lst targets; /* targets we're working on */
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static Lst targCmds; /* command lines for targets */
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static Boolean inLine; /* true if currently in a dependency
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* line or its commands */
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typedef struct {
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char *str;
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char *ptr;
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} PTR;
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static char *fname; /* name of current file (for errors) */
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static int lineno; /* line number in current file */
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static FILE *curFILE = NULL; /* current makefile */
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static PTR *curPTR = NULL; /* current makefile */
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static int fatals = 0;
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static GNode *mainNode; /* The main target to create. This is the
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* first target on the first dependency
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* line in the first makefile */
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/*
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* Definitions for handling #include specifications
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*/
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typedef struct IFile {
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char *fname; /* name of previous file */
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int lineno; /* saved line number */
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FILE * F; /* the open stream */
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PTR * p; /* the char pointer */
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} IFile;
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static Lst includes; /* stack of IFiles generated by
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* #includes */
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Lst parseIncPath; /* list of directories for "..." includes */
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Lst sysIncPath; /* list of directories for <...> includes */
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/*-
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* specType contains the SPECial TYPE of the current target. It is
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* Not if the target is unspecial. If it *is* special, however, the children
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* are linked as children of the parent but not vice versa. This variable is
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* set in ParseDoDependency
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*/
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typedef enum {
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Begin, /* .BEGIN */
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Default, /* .DEFAULT */
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End, /* .END */
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Ignore, /* .IGNORE */
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Includes, /* .INCLUDES */
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Interrupt, /* .INTERRUPT */
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Libs, /* .LIBS */
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MFlags, /* .MFLAGS or .MAKEFLAGS */
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Main, /* .MAIN and we don't have anything user-specified to
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* make */
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NoExport, /* .NOEXPORT */
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Not, /* Not special */
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NotParallel, /* .NOTPARALELL */
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Null, /* .NULL */
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Order, /* .ORDER */
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Parallel, /* .PARALLEL */
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ExPath, /* .PATH */
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Phony, /* .PHONY */
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#ifdef POSIX
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Posix, /* .POSIX */
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#endif
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Precious, /* .PRECIOUS */
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ExShell, /* .SHELL */
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Silent, /* .SILENT */
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SingleShell, /* .SINGLESHELL */
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Suffixes, /* .SUFFIXES */
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Wait, /* .WAIT */
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Attribute /* Generic attribute */
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} ParseSpecial;
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static ParseSpecial specType;
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static int waiting;
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/*
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* Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER
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* seen, then set to each successive source on the line.
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*/
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static GNode *predecessor;
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/*
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* The parseKeywords table is searched using binary search when deciding
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* if a target or source is special. The 'spec' field is the ParseSpecial
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* type of the keyword ("Not" if the keyword isn't special as a target) while
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* the 'op' field is the operator to apply to the list of targets if the
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* keyword is used as a source ("0" if the keyword isn't special as a source)
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*/
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static struct {
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char *name; /* Name of keyword */
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ParseSpecial spec; /* Type when used as a target */
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int op; /* Operator when used as a source */
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} parseKeywords[] = {
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{ ".BEGIN", Begin, 0 },
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{ ".DEFAULT", Default, 0 },
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{ ".END", End, 0 },
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{ ".EXEC", Attribute, OP_EXEC },
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{ ".IGNORE", Ignore, OP_IGNORE },
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{ ".INCLUDES", Includes, 0 },
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{ ".INTERRUPT", Interrupt, 0 },
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{ ".INVISIBLE", Attribute, OP_INVISIBLE },
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{ ".JOIN", Attribute, OP_JOIN },
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{ ".LIBS", Libs, 0 },
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{ ".MAIN", Main, 0 },
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{ ".MAKE", Attribute, OP_MAKE },
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{ ".MAKEFLAGS", MFlags, 0 },
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{ ".MFLAGS", MFlags, 0 },
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{ ".NOTMAIN", Attribute, OP_NOTMAIN },
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{ ".NOTPARALLEL", NotParallel, 0 },
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{ ".NO_PARALLEL", NotParallel, 0 },
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{ ".NULL", Null, 0 },
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{ ".OPTIONAL", Attribute, OP_OPTIONAL },
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{ ".ORDER", Order, 0 },
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{ ".PARALLEL", Parallel, 0 },
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{ ".PATH", ExPath, 0 },
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{ ".PHONY", Phony, OP_PHONY },
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#ifdef POSIX
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{ ".POSIX", Posix, 0 },
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#endif
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{ ".PRECIOUS", Precious, OP_PRECIOUS },
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{ ".RECURSIVE", Attribute, OP_MAKE },
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{ ".SHELL", ExShell, 0 },
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{ ".SILENT", Silent, OP_SILENT },
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{ ".SINGLESHELL", SingleShell, 0 },
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{ ".SUFFIXES", Suffixes, 0 },
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{ ".USE", Attribute, OP_USE },
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{ ".WAIT", Wait, 0 },
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};
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static int ParseFindKeyword __P((char *));
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static int ParseLinkSrc __P((ClientData, ClientData));
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static int ParseDoOp __P((ClientData, ClientData));
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static int ParseAddDep __P((ClientData, ClientData));
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static void ParseDoSrc __P((int, char *, Lst));
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static int ParseFindMain __P((ClientData, ClientData));
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static int ParseAddDir __P((ClientData, ClientData));
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static int ParseClearPath __P((ClientData, ClientData));
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static void ParseDoDependency __P((char *));
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static int ParseAddCmd __P((ClientData, ClientData));
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static int ParseReadc __P((void));
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static void ParseUnreadc __P((int));
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static void ParseHasCommands __P((ClientData));
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static void ParseDoInclude __P((char *));
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static void ParseDoError __P((char *));
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#ifdef SYSVINCLUDE
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static void ParseTraditionalInclude __P((char *));
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#endif
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static int ParseEOF __P((int));
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static char *ParseReadLine __P((void));
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static char *ParseSkipLine __P((int));
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static void ParseFinishLine __P((void));
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/*-
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*----------------------------------------------------------------------
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* ParseFindKeyword --
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* Look in the table of keywords for one matching the given string.
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*
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* Results:
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* The index of the keyword, or -1 if it isn't there.
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*
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* Side Effects:
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* None
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*----------------------------------------------------------------------
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*/
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static int
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ParseFindKeyword (str)
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char *str; /* String to find */
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{
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register int start,
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end,
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cur;
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register int diff;
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start = 0;
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end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
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do {
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cur = start + ((end - start) / 2);
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diff = strcmp (str, parseKeywords[cur].name);
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if (diff == 0) {
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return (cur);
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} else if (diff < 0) {
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end = cur - 1;
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} else {
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start = cur + 1;
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}
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} while (start <= end);
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return (-1);
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}
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/*-
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* Parse_Error --
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* Error message abort function for parsing. Prints out the context
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* of the error (line number and file) as well as the message with
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* two optional arguments.
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*
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* Results:
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* None
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*
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* Side Effects:
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* "fatals" is incremented if the level is PARSE_FATAL.
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*/
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/* VARARGS */
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void
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#if __STDC__
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Parse_Error(int type, char *fmt, ...)
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#else
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Parse_Error(va_alist)
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va_dcl
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#endif
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{
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va_list ap;
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#if __STDC__
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va_start(ap, fmt);
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#else
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int type; /* Error type (PARSE_WARNING, PARSE_FATAL) */
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char *fmt;
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va_start(ap);
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type = va_arg(ap, int);
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fmt = va_arg(ap, char *);
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#endif
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(void)fprintf(stderr, "\"%s\", line %d: ", fname, lineno);
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if (type == PARSE_WARNING)
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(void)fprintf(stderr, "warning: ");
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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(void)fprintf(stderr, "\n");
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(void)fflush(stderr);
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if (type == PARSE_FATAL)
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fatals += 1;
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}
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/*-
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*---------------------------------------------------------------------
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* ParseLinkSrc --
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* Link the parent node to its new child. Used in a Lst_ForEach by
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* ParseDoDependency. If the specType isn't 'Not', the parent
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* isn't linked as a parent of the child.
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*
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* Results:
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* Always = 0
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*
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* Side Effects:
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* New elements are added to the parents list of cgn and the
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* children list of cgn. the unmade field of pgn is updated
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* to reflect the additional child.
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*---------------------------------------------------------------------
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*/
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static int
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ParseLinkSrc (pgnp, cgnp)
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ClientData pgnp; /* The parent node */
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ClientData cgnp; /* The child node */
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{
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GNode *pgn = (GNode *) pgnp;
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GNode *cgn = (GNode *) cgnp;
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if (Lst_Member (pgn->children, (ClientData)cgn) == NILLNODE) {
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(void)Lst_AtEnd (pgn->children, (ClientData)cgn);
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if (specType == Not) {
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(void)Lst_AtEnd (cgn->parents, (ClientData)pgn);
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}
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pgn->unmade += 1;
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}
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return (0);
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}
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|
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/*-
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*---------------------------------------------------------------------
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* ParseDoOp --
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* Apply the parsed operator to the given target node. Used in a
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* Lst_ForEach call by ParseDoDependency once all targets have
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* been found and their operator parsed. If the previous and new
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* operators are incompatible, a major error is taken.
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*
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* Results:
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* Always 0
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*
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* Side Effects:
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* The type field of the node is altered to reflect any new bits in
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* the op.
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*---------------------------------------------------------------------
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*/
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static int
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ParseDoOp (gnp, opp)
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ClientData gnp; /* The node to which the operator is to be
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* applied */
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ClientData opp; /* The operator to apply */
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{
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GNode *gn = (GNode *) gnp;
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int op = *(int *) opp;
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/*
|
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* If the dependency mask of the operator and the node don't match and
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* the node has actually had an operator applied to it before, and
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* the operator actually has some dependency information in it, complain.
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*/
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if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
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!OP_NOP(gn->type) && !OP_NOP(op))
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{
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Parse_Error (PARSE_FATAL, "Inconsistent operator for %s", gn->name);
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return (1);
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}
|
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|
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if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
|
|
/*
|
|
* If the node was the object of a :: operator, we need to create a
|
|
* new instance of it for the children and commands on this dependency
|
|
* line. The new instance is placed on the 'cohorts' list of the
|
|
* initial one (note the initial one is not on its own cohorts list)
|
|
* and the new instance is linked to all parents of the initial
|
|
* instance.
|
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*/
|
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register GNode *cohort;
|
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LstNode ln;
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|
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cohort = Targ_NewGN(gn->name);
|
|
/*
|
|
* Duplicate links to parents so graph traversal is simple. Perhaps
|
|
* some type bits should be duplicated?
|
|
*
|
|
* 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.
|
|
*/
|
|
Lst_ForEach(gn->parents, ParseLinkSrc, (ClientData)cohort);
|
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cohort->type = OP_DOUBLEDEP|OP_INVISIBLE;
|
|
(void)Lst_AtEnd(gn->cohorts, (ClientData)cohort);
|
|
|
|
/*
|
|
* Replace the node in the targets list with the new copy
|
|
*/
|
|
ln = Lst_Member(targets, (ClientData)gn);
|
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Lst_Replace(ln, (ClientData)cohort);
|
|
gn = cohort;
|
|
}
|
|
/*
|
|
* We don't want to nuke any previous flags (whatever they were) so we
|
|
* just OR the new operator into the old
|
|
*/
|
|
gn->type |= op;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseAddDep --
|
|
* Check if the pair of GNodes given needs to be synchronized.
|
|
* This has to be when two nodes are on different sides of a
|
|
* .WAIT directive.
|
|
*
|
|
* Results:
|
|
* Returns 1 if the two targets need to be ordered, 0 otherwise.
|
|
* If it returns 1, the search can stop
|
|
*
|
|
* Side Effects:
|
|
* A dependency can be added between the two nodes.
|
|
*
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
int
|
|
ParseAddDep(pp, sp)
|
|
ClientData pp;
|
|
ClientData sp;
|
|
{
|
|
GNode *p = (GNode *) pp;
|
|
GNode *s = (GNode *) sp;
|
|
|
|
if (p->order < s->order) {
|
|
/*
|
|
* XXX: This can cause loops, and loops can cause unmade targets,
|
|
* but checking is tedious, and the debugging output can show the
|
|
* problem
|
|
*/
|
|
(void)Lst_AtEnd(p->successors, (ClientData)s);
|
|
(void)Lst_AtEnd(s->preds, (ClientData)p);
|
|
return 0;
|
|
}
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoSrc --
|
|
* Given the name of a source, figure out if it is an attribute
|
|
* and apply it to the targets if it is. Else decide if there is
|
|
* some attribute which should be applied *to* the source because
|
|
* of some special target and apply it if so. Otherwise, make the
|
|
* source be a child of the targets in the list 'targets'
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Operator bits may be added to the list of targets or to the source.
|
|
* The targets may have a new source added to their lists of children.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoSrc (tOp, src, allsrc)
|
|
int tOp; /* operator (if any) from special targets */
|
|
char *src; /* name of the source to handle */
|
|
Lst allsrc; /* List of all sources to wait for */
|
|
{
|
|
GNode *gn = NULL;
|
|
|
|
if (*src == '.' && isupper (src[1])) {
|
|
int keywd = ParseFindKeyword(src);
|
|
if (keywd != -1) {
|
|
int op = parseKeywords[keywd].op;
|
|
if (op != 0) {
|
|
Lst_ForEach (targets, ParseDoOp, (ClientData)&op);
|
|
return;
|
|
}
|
|
if (parseKeywords[keywd].spec == Wait) {
|
|
waiting++;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (specType) {
|
|
case Main:
|
|
/*
|
|
* If we have noted the existence of a .MAIN, it means we need
|
|
* to add the sources of said target to the list of things
|
|
* to create. The string 'src' is likely to be free, so we
|
|
* must make a new copy of it. Note that this will only be
|
|
* invoked if the user didn't specify a target on the command
|
|
* line. This is to allow #ifmake's to succeed, or something...
|
|
*/
|
|
(void) Lst_AtEnd (create, (ClientData)estrdup(src));
|
|
/*
|
|
* Add the name to the .TARGETS variable as well, so the user cna
|
|
* employ that, if desired.
|
|
*/
|
|
Var_Append(".TARGETS", src, VAR_GLOBAL);
|
|
return;
|
|
|
|
case Order:
|
|
/*
|
|
* Create proper predecessor/successor links between the previous
|
|
* source and the current one.
|
|
*/
|
|
gn = Targ_FindNode(src, TARG_CREATE);
|
|
if (predecessor != NILGNODE) {
|
|
(void)Lst_AtEnd(predecessor->successors, (ClientData)gn);
|
|
(void)Lst_AtEnd(gn->preds, (ClientData)predecessor);
|
|
}
|
|
/*
|
|
* The current source now becomes the predecessor for the next one.
|
|
*/
|
|
predecessor = gn;
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* If the source is not an attribute, we need to find/create
|
|
* a node for it. After that we can apply any operator to it
|
|
* from a special target or link it to its parents, as
|
|
* appropriate.
|
|
*
|
|
* In the case of a source that was the object of a :: operator,
|
|
* the attribute is applied to all of its instances (as kept in
|
|
* the 'cohorts' list of the node) or all the cohorts are linked
|
|
* to all the targets.
|
|
*/
|
|
gn = Targ_FindNode (src, TARG_CREATE);
|
|
if (tOp) {
|
|
gn->type |= tOp;
|
|
} else {
|
|
Lst_ForEach (targets, ParseLinkSrc, (ClientData)gn);
|
|
}
|
|
if ((gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
|
|
register GNode *cohort;
|
|
register LstNode ln;
|
|
|
|
for (ln=Lst_First(gn->cohorts); ln != NILLNODE; ln = Lst_Succ(ln)){
|
|
cohort = (GNode *)Lst_Datum(ln);
|
|
if (tOp) {
|
|
cohort->type |= tOp;
|
|
} else {
|
|
Lst_ForEach(targets, ParseLinkSrc, (ClientData)cohort);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
gn->order = waiting;
|
|
(void)Lst_AtEnd(allsrc, (ClientData)gn);
|
|
if (waiting) {
|
|
Lst_ForEach(allsrc, ParseAddDep, (ClientData)gn);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseFindMain --
|
|
* Find a real target in the list and set it to be the main one.
|
|
* Called by ParseDoDependency when a main target hasn't been found
|
|
* yet.
|
|
*
|
|
* Results:
|
|
* 0 if main not found yet, 1 if it is.
|
|
*
|
|
* Side Effects:
|
|
* mainNode is changed and Targ_SetMain is called.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseFindMain(gnp, dummy)
|
|
ClientData gnp; /* Node to examine */
|
|
ClientData dummy;
|
|
{
|
|
GNode *gn = (GNode *) gnp;
|
|
if ((gn->type & (OP_NOTMAIN|OP_USE|OP_EXEC|OP_TRANSFORM)) == 0) {
|
|
mainNode = gn;
|
|
Targ_SetMain(gn);
|
|
return (dummy ? 1 : 1);
|
|
} else {
|
|
return (dummy ? 0 : 0);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseAddDir --
|
|
* Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
|
|
*
|
|
* Results:
|
|
* === 0
|
|
*
|
|
* Side Effects:
|
|
* See Dir_AddDir.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseAddDir(path, name)
|
|
ClientData path;
|
|
ClientData name;
|
|
{
|
|
Dir_AddDir((Lst) path, (char *) name);
|
|
return(0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseClearPath --
|
|
* Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
|
|
*
|
|
* Results:
|
|
* === 0
|
|
*
|
|
* Side Effects:
|
|
* See Dir_ClearPath
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseClearPath(path, dummy)
|
|
ClientData path;
|
|
ClientData dummy;
|
|
{
|
|
Dir_ClearPath((Lst) path);
|
|
return(dummy ? 0 : 0);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoDependency --
|
|
* Parse the dependency line in line.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* The nodes of the sources are linked as children to the nodes of the
|
|
* targets. Some nodes may be created.
|
|
*
|
|
* We parse a dependency line by first extracting words from the line and
|
|
* finding nodes in the list of all targets with that name. This is done
|
|
* until a character is encountered which is an operator character. Currently
|
|
* these are only ! and :. At this point the operator is parsed and the
|
|
* pointer into the line advanced until the first source is encountered.
|
|
* The parsed operator is applied to each node in the 'targets' list,
|
|
* which is where the nodes found for the targets are kept, by means of
|
|
* the ParseDoOp function.
|
|
* The sources are read in much the same way as the targets were except
|
|
* that now they are expanded using the wildcarding scheme of the C-Shell
|
|
* and all instances of the resulting words in the list of all targets
|
|
* are found. Each of the resulting nodes is then linked to each of the
|
|
* targets as one of its children.
|
|
* Certain targets are handled specially. These are the ones detailed
|
|
* by the specType variable.
|
|
* The storing of transformation rules is also taken care of here.
|
|
* A target is recognized as a transformation rule by calling
|
|
* Suff_IsTransform. If it is a transformation rule, its node is gotten
|
|
* from the suffix module via Suff_AddTransform rather than the standard
|
|
* Targ_FindNode in the target module.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoDependency (line)
|
|
char *line; /* the line to parse */
|
|
{
|
|
char *cp; /* our current position */
|
|
GNode *gn; /* a general purpose temporary node */
|
|
int op; /* the operator on the line */
|
|
char savec; /* a place to save a character */
|
|
Lst paths; /* List of search paths to alter when parsing
|
|
* a list of .PATH targets */
|
|
int tOp; /* operator from special target */
|
|
Lst sources; /* list of archive source names after
|
|
* expansion */
|
|
Lst curTargs; /* list of target names to be found and added
|
|
* to the targets list */
|
|
Lst curSrcs; /* list of sources in order */
|
|
|
|
tOp = 0;
|
|
|
|
specType = Not;
|
|
waiting = 0;
|
|
paths = (Lst)NULL;
|
|
|
|
curTargs = Lst_Init(FALSE);
|
|
curSrcs = Lst_Init(FALSE);
|
|
|
|
do {
|
|
for (cp = line;
|
|
*cp && !isspace (*cp) &&
|
|
(*cp != '!') && (*cp != ':') && (*cp != '(');
|
|
cp++)
|
|
{
|
|
if (*cp == '$') {
|
|
/*
|
|
* Must be a dynamic source (would have been expanded
|
|
* otherwise), so call the Var module to parse the puppy
|
|
* so we can safely advance beyond it...There should be
|
|
* no errors in this, as they would have been discovered
|
|
* in the initial Var_Subst and we wouldn't be here.
|
|
*/
|
|
int length;
|
|
Boolean freeIt;
|
|
char *result;
|
|
|
|
result=Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
|
|
|
|
if (freeIt) {
|
|
free(result);
|
|
}
|
|
cp += length-1;
|
|
}
|
|
continue;
|
|
}
|
|
if (*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 SUCCESS if all
|
|
* went well and FAILURE if there was an error in the
|
|
* specification. On error, line should remain untouched.
|
|
*/
|
|
if (Arch_ParseArchive (&line, targets, VAR_CMD) != SUCCESS) {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Error in archive specification: \"%s\"", line);
|
|
return;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
savec = *cp;
|
|
|
|
if (!*cp) {
|
|
/*
|
|
* Ending a dependency line without an operator is a Bozo
|
|
* no-no
|
|
*/
|
|
Parse_Error (PARSE_FATAL, "Need an operator");
|
|
return;
|
|
}
|
|
*cp = '\0';
|
|
/*
|
|
* Have a word in line. See if it's a special target and set
|
|
* specType to match it.
|
|
*/
|
|
if (*line == '.' && isupper (line[1])) {
|
|
/*
|
|
* See if the target is a special target that must have it
|
|
* or its sources handled specially.
|
|
*/
|
|
int keywd = ParseFindKeyword(line);
|
|
if (keywd != -1) {
|
|
if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
|
|
Parse_Error(PARSE_FATAL, "Mismatched special targets");
|
|
return;
|
|
}
|
|
|
|
specType = parseKeywords[keywd].spec;
|
|
tOp = parseKeywords[keywd].op;
|
|
|
|
/*
|
|
* Certain special targets have special semantics:
|
|
* .PATH Have to set the dirSearchPath
|
|
* variable too
|
|
* .MAIN Its sources are only used if
|
|
* nothing has been specified to
|
|
* create.
|
|
* .DEFAULT Need to create a node to hang
|
|
* commands on, but we don't want
|
|
* it in the graph, nor do we want
|
|
* it to be the Main Target, so we
|
|
* create it, set OP_NOTMAIN and
|
|
* add it to the list, setting
|
|
* DEFAULT to the new node for
|
|
* later use. We claim the node is
|
|
* A transformation rule to make
|
|
* life easier later, when we'll
|
|
* use Make_HandleUse to actually
|
|
* apply the .DEFAULT commands.
|
|
* .PHONY The list of targets
|
|
* .BEGIN
|
|
* .END
|
|
* .INTERRUPT Are not to be considered the
|
|
* main target.
|
|
* .NOTPARALLEL Make only one target at a time.
|
|
* .SINGLESHELL Create a shell for each command.
|
|
* .ORDER Must set initial predecessor to NIL
|
|
*/
|
|
switch (specType) {
|
|
case ExPath:
|
|
if (paths == NULL) {
|
|
paths = Lst_Init(FALSE);
|
|
}
|
|
(void)Lst_AtEnd(paths, (ClientData)dirSearchPath);
|
|
break;
|
|
case Main:
|
|
if (!Lst_IsEmpty(create)) {
|
|
specType = Not;
|
|
}
|
|
break;
|
|
case Begin:
|
|
case End:
|
|
case Interrupt:
|
|
gn = Targ_FindNode(line, TARG_CREATE);
|
|
gn->type |= OP_NOTMAIN;
|
|
(void)Lst_AtEnd(targets, (ClientData)gn);
|
|
break;
|
|
case Default:
|
|
gn = Targ_NewGN(".DEFAULT");
|
|
gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
|
|
(void)Lst_AtEnd(targets, (ClientData)gn);
|
|
DEFAULT = gn;
|
|
break;
|
|
case NotParallel:
|
|
{
|
|
extern int maxJobs;
|
|
|
|
maxJobs = 1;
|
|
break;
|
|
}
|
|
case SingleShell:
|
|
compatMake = 1;
|
|
break;
|
|
case Order:
|
|
predecessor = NILGNODE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (strncmp (line, ".PATH", 5) == 0) {
|
|
/*
|
|
* .PATH<suffix> has to be handled specially.
|
|
* Call on the suffix module to give us a path to
|
|
* modify.
|
|
*/
|
|
Lst path;
|
|
|
|
specType = ExPath;
|
|
path = Suff_GetPath (&line[5]);
|
|
if (path == NILLST) {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Suffix '%s' not defined (yet)",
|
|
&line[5]);
|
|
return;
|
|
} else {
|
|
if (paths == (Lst)NULL) {
|
|
paths = Lst_Init(FALSE);
|
|
}
|
|
(void)Lst_AtEnd(paths, (ClientData)path);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Have word in line. Get or create its node and stick it at
|
|
* the end of the targets list
|
|
*/
|
|
if ((specType == Not) && (*line != '\0')) {
|
|
if (Dir_HasWildcards(line)) {
|
|
/*
|
|
* Targets are to be sought only in the current directory,
|
|
* so create an empty path for the thing. Note we need to
|
|
* use Dir_Destroy in the destruction of the path as the
|
|
* Dir module could have added a directory to the path...
|
|
*/
|
|
Lst emptyPath = Lst_Init(FALSE);
|
|
|
|
Dir_Expand(line, emptyPath, curTargs);
|
|
|
|
Lst_Destroy(emptyPath, Dir_Destroy);
|
|
} else {
|
|
/*
|
|
* No wildcards, but we want to avoid code duplication,
|
|
* so create a list with the word on it.
|
|
*/
|
|
(void)Lst_AtEnd(curTargs, (ClientData)line);
|
|
}
|
|
|
|
while(!Lst_IsEmpty(curTargs)) {
|
|
char *targName = (char *)Lst_DeQueue(curTargs);
|
|
|
|
if (!Suff_IsTransform (targName)) {
|
|
gn = Targ_FindNode (targName, TARG_CREATE);
|
|
} else {
|
|
gn = Suff_AddTransform (targName);
|
|
}
|
|
|
|
(void)Lst_AtEnd (targets, (ClientData)gn);
|
|
}
|
|
} else if (specType == ExPath && *line != '.' && *line != '\0') {
|
|
Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
|
|
}
|
|
|
|
*cp = savec;
|
|
/*
|
|
* If it is a special type and not .PATH, it's the only target we
|
|
* allow on this line...
|
|
*/
|
|
if (specType != Not && specType != ExPath) {
|
|
Boolean warn = FALSE;
|
|
|
|
while ((*cp != '!') && (*cp != ':') && *cp) {
|
|
if (*cp != ' ' && *cp != '\t') {
|
|
warn = TRUE;
|
|
}
|
|
cp++;
|
|
}
|
|
if (warn) {
|
|
Parse_Error(PARSE_WARNING, "Extra target ignored");
|
|
}
|
|
} else {
|
|
while (*cp && isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
}
|
|
line = cp;
|
|
} while ((*line != '!') && (*line != ':') && *line);
|
|
|
|
/*
|
|
* Don't need the list of target names anymore...
|
|
*/
|
|
Lst_Destroy(curTargs, NOFREE);
|
|
|
|
if (!Lst_IsEmpty(targets)) {
|
|
switch(specType) {
|
|
default:
|
|
Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
|
|
break;
|
|
case Default:
|
|
case Begin:
|
|
case End:
|
|
case Interrupt:
|
|
/*
|
|
* These four create nodes on which to hang commands, so
|
|
* targets shouldn't be empty...
|
|
*/
|
|
case Not:
|
|
/*
|
|
* Nothing special here -- targets can be empty if it wants.
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Have now parsed all the target names. Must parse the operator next. The
|
|
* result is left in op .
|
|
*/
|
|
if (*cp == '!') {
|
|
op = OP_FORCE;
|
|
} else if (*cp == ':') {
|
|
if (cp[1] == ':') {
|
|
op = OP_DOUBLEDEP;
|
|
cp++;
|
|
} else {
|
|
op = OP_DEPENDS;
|
|
}
|
|
} else {
|
|
Parse_Error (PARSE_FATAL, "Missing dependency operator");
|
|
return;
|
|
}
|
|
|
|
cp++; /* Advance beyond operator */
|
|
|
|
Lst_ForEach (targets, ParseDoOp, (ClientData)&op);
|
|
|
|
/*
|
|
* Get to the first source
|
|
*/
|
|
while (*cp && isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
|
|
/*
|
|
* Several special targets take different actions if present with no
|
|
* sources:
|
|
* a .SUFFIXES line with no sources clears out all old suffixes
|
|
* a .PRECIOUS line makes all targets precious
|
|
* a .IGNORE line ignores errors for all targets
|
|
* a .SILENT line creates silence when making all targets
|
|
* a .PATH removes all directories from the search path(s).
|
|
*/
|
|
if (!*line) {
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_ClearSuffixes ();
|
|
break;
|
|
case Precious:
|
|
allPrecious = TRUE;
|
|
break;
|
|
case Ignore:
|
|
ignoreErrors = TRUE;
|
|
break;
|
|
case Silent:
|
|
beSilent = TRUE;
|
|
break;
|
|
case ExPath:
|
|
Lst_ForEach(paths, ParseClearPath, (ClientData)NULL);
|
|
break;
|
|
#ifdef POSIX
|
|
case Posix:
|
|
Var_Set("%POSIX", "1003.2", VAR_GLOBAL);
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
} else if (specType == MFlags) {
|
|
/*
|
|
* Call on functions in main.c to deal with these arguments and
|
|
* set the initial character to a null-character so the loop to
|
|
* get sources won't get anything
|
|
*/
|
|
Main_ParseArgLine (line);
|
|
*line = '\0';
|
|
} else if (specType == ExShell) {
|
|
if (Job_ParseShell (line) != SUCCESS) {
|
|
Parse_Error (PARSE_FATAL, "improper shell specification");
|
|
return;
|
|
}
|
|
*line = '\0';
|
|
} else if ((specType == NotParallel) || (specType == SingleShell)) {
|
|
*line = '\0';
|
|
}
|
|
|
|
/*
|
|
* NOW GO FOR THE SOURCES
|
|
*/
|
|
if ((specType == Suffixes) || (specType == ExPath) ||
|
|
(specType == Includes) || (specType == Libs) ||
|
|
(specType == Null))
|
|
{
|
|
while (*line) {
|
|
/*
|
|
* If the target was one that doesn't take files as its sources
|
|
* but takes something like suffixes, we take each
|
|
* space-separated word on the line as a something and deal
|
|
* with it accordingly.
|
|
*
|
|
* If the target was .SUFFIXES, we take each source as a
|
|
* suffix and add it to the list of suffixes maintained by the
|
|
* Suff module.
|
|
*
|
|
* If the target was a .PATH, we add the source as a directory
|
|
* to search on the search path.
|
|
*
|
|
* If it was .INCLUDES, the source is taken to be the suffix of
|
|
* files which will be #included and whose search path should
|
|
* be present in the .INCLUDES variable.
|
|
*
|
|
* If it was .LIBS, the source is taken to be the suffix of
|
|
* files which are considered libraries and whose search path
|
|
* should be present in the .LIBS variable.
|
|
*
|
|
* If it was .NULL, the source is the suffix to use when a file
|
|
* has no valid suffix.
|
|
*/
|
|
char savec;
|
|
while (*cp && !isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
savec = *cp;
|
|
*cp = '\0';
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_AddSuffix (line);
|
|
break;
|
|
case ExPath:
|
|
Lst_ForEach(paths, ParseAddDir, (ClientData)line);
|
|
break;
|
|
case Includes:
|
|
Suff_AddInclude (line);
|
|
break;
|
|
case Libs:
|
|
Suff_AddLib (line);
|
|
break;
|
|
case Null:
|
|
Suff_SetNull (line);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
*cp = savec;
|
|
if (savec != '\0') {
|
|
cp++;
|
|
}
|
|
while (*cp && isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
if (paths) {
|
|
Lst_Destroy(paths, NOFREE);
|
|
}
|
|
} else {
|
|
while (*line) {
|
|
/*
|
|
* The targets take real sources, so we must beware of archive
|
|
* specifications (i.e. things with left parentheses in them)
|
|
* and handle them accordingly.
|
|
*/
|
|
while (*cp && !isspace (*cp)) {
|
|
if ((*cp == '(') && (cp > line) && (cp[-1] != '$')) {
|
|
/*
|
|
* Only stop for a left parenthesis if it isn't at the
|
|
* start of a word (that'll be for variable changes
|
|
* later) and isn't preceded by a dollar sign (a dynamic
|
|
* source).
|
|
*/
|
|
break;
|
|
} else {
|
|
cp++;
|
|
}
|
|
}
|
|
|
|
if (*cp == '(') {
|
|
GNode *gn;
|
|
|
|
sources = Lst_Init (FALSE);
|
|
if (Arch_ParseArchive (&line, sources, VAR_CMD) != SUCCESS) {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Error in source archive spec \"%s\"", line);
|
|
return;
|
|
}
|
|
|
|
while (!Lst_IsEmpty (sources)) {
|
|
gn = (GNode *) Lst_DeQueue (sources);
|
|
ParseDoSrc (tOp, gn->name, curSrcs);
|
|
}
|
|
Lst_Destroy (sources, NOFREE);
|
|
cp = line;
|
|
} else {
|
|
if (*cp) {
|
|
*cp = '\0';
|
|
cp += 1;
|
|
}
|
|
|
|
ParseDoSrc (tOp, line, curSrcs);
|
|
}
|
|
while (*cp && isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
}
|
|
|
|
if (mainNode == NILGNODE) {
|
|
/*
|
|
* If we have yet to decide on a main target to make, in the
|
|
* absence of any user input, we want the first target on
|
|
* the first dependency line that is actually a real target
|
|
* (i.e. isn't a .USE or .EXEC rule) to be made.
|
|
*/
|
|
Lst_ForEach (targets, ParseFindMain, (ClientData)0);
|
|
}
|
|
|
|
/*
|
|
* Finally, destroy the list of sources
|
|
*/
|
|
Lst_Destroy(curSrcs, NOFREE);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_IsVar --
|
|
* Return TRUE if the passed line is a variable assignment. A variable
|
|
* assignment consists of a single word followed by optional whitespace
|
|
* followed by either a += or an = operator.
|
|
* This function is used both by the Parse_File function and main when
|
|
* parsing the command-line arguments.
|
|
*
|
|
* Results:
|
|
* TRUE if it is. FALSE if it ain't
|
|
*
|
|
* Side Effects:
|
|
* none
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Parse_IsVar (line)
|
|
register char *line; /* the line to check */
|
|
{
|
|
register Boolean wasSpace = FALSE; /* set TRUE if found a space */
|
|
register Boolean haveName = FALSE; /* Set TRUE if have a variable name */
|
|
int level = 0;
|
|
#define ISEQOPERATOR(c) \
|
|
(((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
|
|
|
|
/*
|
|
* Skip to variable name
|
|
*/
|
|
for (;(*line == ' ') || (*line == '\t'); line++)
|
|
continue;
|
|
|
|
for (; *line != '=' || level != 0; line++)
|
|
switch (*line) {
|
|
case '\0':
|
|
/*
|
|
* end-of-line -- can't be a variable assignment.
|
|
*/
|
|
return FALSE;
|
|
|
|
case ' ':
|
|
case '\t':
|
|
/*
|
|
* there can be as much white space as desired so long as there is
|
|
* only one word before the operator
|
|
*/
|
|
wasSpace = TRUE;
|
|
break;
|
|
|
|
case '(':
|
|
case '{':
|
|
level++;
|
|
break;
|
|
|
|
case '}':
|
|
case ')':
|
|
level--;
|
|
break;
|
|
|
|
default:
|
|
if (wasSpace && haveName) {
|
|
if (ISEQOPERATOR(*line)) {
|
|
/*
|
|
* We must have a finished word
|
|
*/
|
|
if (level != 0)
|
|
return FALSE;
|
|
|
|
/*
|
|
* When an = operator [+?!:] is found, the next
|
|
* character must be an = or it ain't a valid
|
|
* assignment.
|
|
*/
|
|
if (line[1] == '=')
|
|
return haveName;
|
|
#ifdef SUNSHCMD
|
|
/*
|
|
* This is a shell command
|
|
*/
|
|
if (strncmp(line, ":sh", 3) == 0)
|
|
return haveName;
|
|
#endif
|
|
}
|
|
/*
|
|
* This is the start of another word, so not assignment.
|
|
*/
|
|
return FALSE;
|
|
}
|
|
else {
|
|
haveName = TRUE;
|
|
wasSpace = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return haveName;
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_DoVar --
|
|
* Take the variable assignment in the passed line and do it in the
|
|
* global context.
|
|
*
|
|
* Note: There is a lexical ambiguity with assignment modifier characters
|
|
* in variable names. This routine interprets the character before the =
|
|
* as a modifier. Therefore, an assignment like
|
|
* C++=/usr/bin/CC
|
|
* is interpreted as "C+ +=" instead of "C++ =".
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* the variable structure of the given variable name is altered in the
|
|
* global context.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_DoVar (line, ctxt)
|
|
char *line; /* a line guaranteed to be a variable
|
|
* assignment. This reduces error checks */
|
|
GNode *ctxt; /* Context in which to do the assignment */
|
|
{
|
|
char *cp; /* pointer into line */
|
|
enum {
|
|
VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
|
|
} type; /* Type of assignment */
|
|
char *opc; /* ptr to operator character to
|
|
* null-terminate the variable name */
|
|
/*
|
|
* Avoid clobbered variable warnings by forcing the compiler
|
|
* to ``unregister'' variables
|
|
*/
|
|
#if __GNUC__
|
|
(void) &cp;
|
|
(void) &line;
|
|
#endif
|
|
|
|
/*
|
|
* Skip to variable name
|
|
*/
|
|
while ((*line == ' ') || (*line == '\t')) {
|
|
line++;
|
|
}
|
|
|
|
/*
|
|
* Skip to operator character, nulling out whitespace as we go
|
|
*/
|
|
for (cp = line + 1; *cp != '='; cp++) {
|
|
if (isspace (*cp)) {
|
|
*cp = '\0';
|
|
}
|
|
}
|
|
opc = cp-1; /* operator is the previous character */
|
|
*cp++ = '\0'; /* nuke the = */
|
|
|
|
/*
|
|
* Check operator type
|
|
*/
|
|
switch (*opc) {
|
|
case '+':
|
|
type = VAR_APPEND;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '?':
|
|
/*
|
|
* If the variable already has a value, we don't do anything.
|
|
*/
|
|
*opc = '\0';
|
|
if (Var_Exists(line, ctxt)) {
|
|
return;
|
|
} else {
|
|
type = VAR_NORMAL;
|
|
}
|
|
break;
|
|
|
|
case ':':
|
|
type = VAR_SUBST;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '!':
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
default:
|
|
#ifdef SUNSHCMD
|
|
while (*opc != ':')
|
|
if (--opc < line)
|
|
break;
|
|
|
|
if (strncmp(opc, ":sh", 3) == 0) {
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
}
|
|
#endif
|
|
type = VAR_NORMAL;
|
|
break;
|
|
}
|
|
|
|
while (isspace (*cp)) {
|
|
cp++;
|
|
}
|
|
|
|
if (type == VAR_APPEND) {
|
|
Var_Append (line, cp, ctxt);
|
|
} else if (type == VAR_SUBST) {
|
|
/*
|
|
* Allow variables in the old value to be undefined, but leave their
|
|
* invocation alone -- this is done by forcing oldVars to be false.
|
|
* XXX: This can cause recursive variables, but that's not hard to do,
|
|
* and this allows someone to do something like
|
|
*
|
|
* CFLAGS = $(.INCLUDES)
|
|
* CFLAGS := -I.. $(CFLAGS)
|
|
*
|
|
* And not get an error.
|
|
*/
|
|
Boolean oldOldVars = oldVars;
|
|
|
|
oldVars = FALSE;
|
|
cp = Var_Subst(NULL, cp, ctxt, FALSE);
|
|
oldVars = oldOldVars;
|
|
|
|
Var_Set(line, cp, ctxt);
|
|
free(cp);
|
|
} else if (type == VAR_SHELL) {
|
|
Boolean freeCmd = FALSE; /* TRUE if the command needs to be freed, i.e.
|
|
* if any variable expansion was performed */
|
|
char *res, *err;
|
|
|
|
if (strchr(cp, '$') != NULL) {
|
|
/*
|
|
* There's a dollar sign in the command, so perform variable
|
|
* expansion on the whole thing. The resulting string will need
|
|
* freeing when we're done, so set freeCmd to TRUE.
|
|
*/
|
|
cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
|
|
freeCmd = TRUE;
|
|
}
|
|
|
|
res = Cmd_Exec(cp, &err);
|
|
Var_Set(line, res, ctxt);
|
|
free(res);
|
|
|
|
if (err)
|
|
Parse_Error(PARSE_WARNING, err, cp);
|
|
|
|
if (freeCmd)
|
|
free(cp);
|
|
} else {
|
|
/*
|
|
* Normal assignment -- just do it.
|
|
*/
|
|
Var_Set(line, cp, ctxt);
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
* ParseAddCmd --
|
|
* Lst_ForEach function to add a command line to all targets
|
|
*
|
|
* Results:
|
|
* Always 0
|
|
*
|
|
* Side Effects:
|
|
* A new element is added to the commands list of the node.
|
|
*/
|
|
static int
|
|
ParseAddCmd(gnp, cmd)
|
|
ClientData gnp; /* the node to which the command is to be added */
|
|
ClientData cmd; /* the command to add */
|
|
{
|
|
GNode *gn = (GNode *) gnp;
|
|
/* if target already supplied, ignore commands */
|
|
if (!(gn->type & OP_HAS_COMMANDS))
|
|
(void)Lst_AtEnd(gn->commands, cmd);
|
|
return(0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseHasCommands --
|
|
* Callback procedure for Parse_File when destroying the list of
|
|
* targets on the last dependency line. Marks a target as already
|
|
* having commands if it does, to keep from having shell commands
|
|
* on multiple dependency lines.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* OP_HAS_COMMANDS may be set for the target.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseHasCommands(gnp)
|
|
ClientData gnp; /* Node to examine */
|
|
{
|
|
GNode *gn = (GNode *) gnp;
|
|
if (!Lst_IsEmpty(gn->commands)) {
|
|
gn->type |= OP_HAS_COMMANDS;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Parse_AddIncludeDir --
|
|
* Add a directory to the path searched for included makefiles
|
|
* bracketed by double-quotes. Used by functions in main.c
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The directory is appended to the list.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_AddIncludeDir (dir)
|
|
char *dir; /* The name of the directory to add */
|
|
{
|
|
Dir_AddDir (parseIncPath, dir);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------
|
|
* ParseDoError --
|
|
* Handle error directive
|
|
*
|
|
* The input is the line minus the ".error". We substitute variables,
|
|
* print the message and exit(1) or just print a warning if the ".error"
|
|
* directive is malformed.
|
|
*
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoError(errmsg)
|
|
char *errmsg; /* error message */
|
|
{
|
|
if (!isspace(*errmsg)) {
|
|
Parse_Error(PARSE_WARNING, "invalid syntax: .error%s", errmsg);
|
|
return;
|
|
}
|
|
|
|
while (isspace(*errmsg))
|
|
errmsg++;
|
|
|
|
errmsg = Var_Subst(NULL, errmsg, VAR_GLOBAL, FALSE);
|
|
|
|
/* use fprintf/exit instead of Parse_Error to terminate immediately */
|
|
fprintf(stderr, "\"%s\", line %d: %s\n", fname, lineno, errmsg);
|
|
exit(1);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseDoInclude --
|
|
* Push to another file.
|
|
*
|
|
* The input is the line minus the #include. A file spec is a string
|
|
* enclosed in <> or "". The former is looked for only in sysIncPath.
|
|
* The latter in . and the directories specified by -I command line
|
|
* options
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFILE are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseDoInclude (file)
|
|
char *file; /* file specification */
|
|
{
|
|
char *fullname; /* full pathname of file */
|
|
IFile *oldFile; /* state associated with current file */
|
|
char endc; /* the character which ends the file spec */
|
|
char *cp; /* current position in file spec */
|
|
Boolean isSystem; /* TRUE if makefile is a system makefile */
|
|
|
|
/*
|
|
* Skip to delimiter character so we know where to look
|
|
*/
|
|
while ((*file == ' ') || (*file == '\t')) {
|
|
file++;
|
|
}
|
|
|
|
if ((*file != '"') && (*file != '<')) {
|
|
Parse_Error (PARSE_FATAL,
|
|
".include filename must be delimited by '\"' or '<'");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Set the search path on which to find the include file based on the
|
|
* characters which bracket its name. Angle-brackets imply it's
|
|
* a system Makefile while double-quotes imply it's a user makefile
|
|
*/
|
|
if (*file == '<') {
|
|
isSystem = TRUE;
|
|
endc = '>';
|
|
} else {
|
|
isSystem = FALSE;
|
|
endc = '"';
|
|
}
|
|
|
|
/*
|
|
* Skip to matching delimiter
|
|
*/
|
|
for (cp = ++file; *cp && *cp != endc; cp++) {
|
|
continue;
|
|
}
|
|
|
|
if (*cp != endc) {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Unclosed %cinclude filename. '%c' expected",
|
|
'.', endc);
|
|
return;
|
|
}
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
file = Var_Subst (NULL, file, VAR_CMD, FALSE);
|
|
|
|
/*
|
|
* Now we know the file's name and its search path, we attempt to
|
|
* find the durn thing. A return of NULL indicates the file don't
|
|
* exist.
|
|
*/
|
|
if (!isSystem) {
|
|
/*
|
|
* Include files contained in double-quotes are first searched for
|
|
* relative to the including file's location. We don't want to
|
|
* cd there, of course, so we just tack on the old file's
|
|
* leading path components and call Dir_FindFile to see if
|
|
* we can locate the beast.
|
|
*/
|
|
char *prefEnd, *Fname;
|
|
|
|
/* Make a temporary copy of this, to be safe. */
|
|
Fname = estrdup(fname);
|
|
|
|
prefEnd = strrchr (Fname, '/');
|
|
if (prefEnd != (char *)NULL) {
|
|
char *newName;
|
|
|
|
*prefEnd = '\0';
|
|
if (file[0] == '/')
|
|
newName = estrdup(file);
|
|
else
|
|
newName = str_concat (Fname, file, STR_ADDSLASH);
|
|
fullname = Dir_FindFile (newName, parseIncPath);
|
|
if (fullname == (char *)NULL) {
|
|
fullname = Dir_FindFile(newName, dirSearchPath);
|
|
}
|
|
free (newName);
|
|
*prefEnd = '/';
|
|
} else {
|
|
fullname = (char *)NULL;
|
|
}
|
|
free (Fname);
|
|
} else {
|
|
fullname = (char *)NULL;
|
|
}
|
|
|
|
if (fullname == (char *)NULL) {
|
|
/*
|
|
* System makefile or 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.
|
|
* XXX: Suffix specific?
|
|
*/
|
|
fullname = Dir_FindFile (file, parseIncPath);
|
|
if (fullname == (char *)NULL) {
|
|
fullname = Dir_FindFile(file, dirSearchPath);
|
|
}
|
|
}
|
|
|
|
if (fullname == (char *)NULL) {
|
|
/*
|
|
* Still haven't found the makefile. Look for it on the system
|
|
* path as a last resort.
|
|
*/
|
|
fullname = Dir_FindFile(file, sysIncPath);
|
|
}
|
|
|
|
if (fullname == (char *) NULL) {
|
|
*cp = endc;
|
|
Parse_Error (PARSE_FATAL, "Could not find %s", file);
|
|
return;
|
|
}
|
|
|
|
free(file);
|
|
|
|
/*
|
|
* Once we find the absolute path to the file, we get to save all the
|
|
* state from the current file before we can start reading this
|
|
* include file. The state is stored in an IFile structure which
|
|
* is placed on a list with other IFile structures. The list makes
|
|
* a very nice stack to track how we got here...
|
|
*/
|
|
oldFile = (IFile *) emalloc (sizeof (IFile));
|
|
oldFile->fname = fname;
|
|
|
|
oldFile->F = curFILE;
|
|
oldFile->p = curPTR;
|
|
oldFile->lineno = lineno;
|
|
|
|
(void) Lst_AtFront (includes, (ClientData)oldFile);
|
|
|
|
/*
|
|
* Once the previous state has been saved, we can get down to reading
|
|
* the new file. We set up the name of the file to be the absolute
|
|
* name of the include file so error messages refer to the right
|
|
* place. Naturally enough, we start reading at line number 0.
|
|
*/
|
|
fname = fullname;
|
|
lineno = 0;
|
|
|
|
curFILE = fopen (fullname, "r");
|
|
curPTR = NULL;
|
|
if (curFILE == (FILE * ) NULL) {
|
|
Parse_Error (PARSE_FATAL, "Cannot open %s", fullname);
|
|
/*
|
|
* Pop to previous file
|
|
*/
|
|
(void) ParseEOF(0);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_FromString --
|
|
* Start Parsing from the given string
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFILE are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_FromString(str)
|
|
char *str;
|
|
{
|
|
IFile *oldFile; /* state associated with this file */
|
|
|
|
if (DEBUG(FOR))
|
|
(void) fprintf(stderr, "%s\n----\n", str);
|
|
|
|
oldFile = (IFile *) emalloc (sizeof (IFile));
|
|
oldFile->lineno = lineno;
|
|
oldFile->fname = fname;
|
|
oldFile->F = curFILE;
|
|
oldFile->p = curPTR;
|
|
|
|
(void) Lst_AtFront (includes, (ClientData)oldFile);
|
|
|
|
curFILE = NULL;
|
|
curPTR = (PTR *) emalloc (sizeof (PTR));
|
|
curPTR->str = curPTR->ptr = str;
|
|
lineno = 0;
|
|
fname = estrdup(fname);
|
|
}
|
|
|
|
|
|
#ifdef SYSVINCLUDE
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseTraditionalInclude --
|
|
* Push to another file.
|
|
*
|
|
* The input is the line minus the "include". The file name is
|
|
* the string following the "include".
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, lineno,
|
|
* fname and curFILE are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseTraditionalInclude (file)
|
|
char *file; /* file specification */
|
|
{
|
|
char *fullname; /* full pathname of file */
|
|
IFile *oldFile; /* state associated with current file */
|
|
char *cp; /* current position in file spec */
|
|
char *prefEnd;
|
|
|
|
/*
|
|
* Skip over whitespace
|
|
*/
|
|
while ((*file == ' ') || (*file == '\t')) {
|
|
file++;
|
|
}
|
|
|
|
if (*file == '\0') {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Filename missing from \"include\"");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Skip to end of line or next whitespace
|
|
*/
|
|
for (cp = file; *cp && *cp != '\n' && *cp != '\t' && *cp != ' '; cp++) {
|
|
continue;
|
|
}
|
|
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
file = Var_Subst (NULL, file, VAR_CMD, FALSE);
|
|
|
|
/*
|
|
* Now we know the file's name, we attempt to find the durn thing.
|
|
* A return of NULL indicates the file don't exist.
|
|
*
|
|
* Include files are first searched for relative to the including
|
|
* file's location. We don't want to cd there, of course, so we
|
|
* just tack on the old file's leading path components and call
|
|
* Dir_FindFile to see if we can locate the beast.
|
|
* XXX - this *does* search in the current directory, right?
|
|
*/
|
|
|
|
prefEnd = strrchr (fname, '/');
|
|
if (prefEnd != (char *)NULL) {
|
|
char *newName;
|
|
|
|
*prefEnd = '\0';
|
|
newName = str_concat (fname, file, STR_ADDSLASH);
|
|
fullname = Dir_FindFile (newName, parseIncPath);
|
|
if (fullname == (char *)NULL) {
|
|
fullname = Dir_FindFile(newName, dirSearchPath);
|
|
}
|
|
free (newName);
|
|
*prefEnd = '/';
|
|
} else {
|
|
fullname = (char *)NULL;
|
|
}
|
|
|
|
if (fullname == (char *)NULL) {
|
|
/*
|
|
* System makefile or 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.
|
|
* XXX: Suffix specific?
|
|
*/
|
|
fullname = Dir_FindFile (file, parseIncPath);
|
|
if (fullname == (char *)NULL) {
|
|
fullname = Dir_FindFile(file, dirSearchPath);
|
|
}
|
|
}
|
|
|
|
if (fullname == (char *)NULL) {
|
|
/*
|
|
* Still haven't found the makefile. Look for it on the system
|
|
* path as a last resort.
|
|
*/
|
|
fullname = Dir_FindFile(file, sysIncPath);
|
|
}
|
|
|
|
if (fullname == (char *) NULL) {
|
|
Parse_Error (PARSE_FATAL, "Could not find %s", file);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Once we find the absolute path to the file, we get to save all the
|
|
* state from the current file before we can start reading this
|
|
* include file. The state is stored in an IFile structure which
|
|
* is placed on a list with other IFile structures. The list makes
|
|
* a very nice stack to track how we got here...
|
|
*/
|
|
oldFile = (IFile *) emalloc (sizeof (IFile));
|
|
oldFile->fname = fname;
|
|
|
|
oldFile->F = curFILE;
|
|
oldFile->p = curPTR;
|
|
oldFile->lineno = lineno;
|
|
|
|
(void) Lst_AtFront (includes, (ClientData)oldFile);
|
|
|
|
/*
|
|
* Once the previous state has been saved, we can get down to reading
|
|
* the new file. We set up the name of the file to be the absolute
|
|
* name of the include file so error messages refer to the right
|
|
* place. Naturally enough, we start reading at line number 0.
|
|
*/
|
|
fname = fullname;
|
|
lineno = 0;
|
|
|
|
curFILE = fopen (fullname, "r");
|
|
curPTR = NULL;
|
|
if (curFILE == (FILE * ) NULL) {
|
|
Parse_Error (PARSE_FATAL, "Cannot open %s", fullname);
|
|
/*
|
|
* Pop to previous file
|
|
*/
|
|
(void) ParseEOF(1);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseEOF --
|
|
* Called when EOF is reached in the current file. If we were reading
|
|
* an include file, the includes stack is popped and things set up
|
|
* to go back to reading the previous file at the previous location.
|
|
*
|
|
* Results:
|
|
* CONTINUE if there's more to do. DONE if not.
|
|
*
|
|
* Side Effects:
|
|
* The old curFILE, is closed. The includes list is shortened.
|
|
* lineno, curFILE, and fname are changed if CONTINUE is returned.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseEOF (opened)
|
|
int opened;
|
|
{
|
|
IFile *ifile; /* the state on the top of the includes stack */
|
|
|
|
if (Lst_IsEmpty (includes)) {
|
|
return (DONE);
|
|
}
|
|
|
|
ifile = (IFile *) Lst_DeQueue (includes);
|
|
free ((Address) fname);
|
|
fname = ifile->fname;
|
|
lineno = ifile->lineno;
|
|
if (opened && curFILE)
|
|
(void) fclose (curFILE);
|
|
if (curPTR) {
|
|
free((Address) curPTR->str);
|
|
free((Address) curPTR);
|
|
}
|
|
curFILE = ifile->F;
|
|
curPTR = ifile->p;
|
|
free ((Address)ifile);
|
|
return (CONTINUE);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseReadc --
|
|
* Read a character from the current file
|
|
*
|
|
* Results:
|
|
* The character that was read
|
|
*
|
|
* Side Effects:
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseReadc()
|
|
{
|
|
if (curFILE)
|
|
return fgetc(curFILE);
|
|
|
|
if (curPTR && *curPTR->ptr)
|
|
return *curPTR->ptr++;
|
|
return EOF;
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseUnreadc --
|
|
* Put back a character to the current file
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseUnreadc(c)
|
|
int c;
|
|
{
|
|
if (curFILE) {
|
|
ungetc(c, curFILE);
|
|
return;
|
|
}
|
|
if (curPTR) {
|
|
*--(curPTR->ptr) = c;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/* ParseSkipLine():
|
|
* Grab the next line
|
|
*/
|
|
static char *
|
|
ParseSkipLine(skip)
|
|
int skip; /* Skip lines that don't start with . */
|
|
{
|
|
char *line;
|
|
int c, lastc, lineLength = 0;
|
|
Buffer buf;
|
|
|
|
buf = Buf_Init(MAKE_BSIZE);
|
|
|
|
do {
|
|
Buf_Discard(buf, lineLength);
|
|
lastc = '\0';
|
|
|
|
while (((c = ParseReadc()) != '\n' || lastc == '\\')
|
|
&& c != EOF) {
|
|
if (c == '\n') {
|
|
Buf_ReplaceLastByte(buf, (Byte)' ');
|
|
lineno++;
|
|
|
|
while ((c = ParseReadc()) == ' ' || c == '\t');
|
|
|
|
if (c == EOF)
|
|
break;
|
|
}
|
|
|
|
Buf_AddByte(buf, (Byte)c);
|
|
lastc = c;
|
|
}
|
|
|
|
if (c == EOF) {
|
|
Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop");
|
|
Buf_Destroy(buf, TRUE);
|
|
return((char *)NULL);
|
|
}
|
|
|
|
lineno++;
|
|
Buf_AddByte(buf, (Byte)'\0');
|
|
line = (char *)Buf_GetAll(buf, &lineLength);
|
|
} while (skip == 1 && line[0] != '.');
|
|
|
|
Buf_Destroy(buf, FALSE);
|
|
return line;
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseReadLine --
|
|
* Read an entire line from the input file. Called only by Parse_File.
|
|
* To facilitate escaped newlines and what have you, a character is
|
|
* buffered in 'lastc', which is '\0' when no characters have been
|
|
* read. When we break out of the loop, c holds the terminating
|
|
* character and lastc holds a character that should be added to
|
|
* the line (unless we don't read anything but a terminator).
|
|
*
|
|
* Results:
|
|
* A line w/o its newline
|
|
*
|
|
* Side Effects:
|
|
* Only those associated with reading a character
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static char *
|
|
ParseReadLine ()
|
|
{
|
|
Buffer buf; /* Buffer for current line */
|
|
register int c; /* the current character */
|
|
register int lastc; /* The most-recent character */
|
|
Boolean semiNL; /* treat semi-colons as newlines */
|
|
Boolean ignDepOp; /* TRUE if should ignore dependency operators
|
|
* for the purposes of setting semiNL */
|
|
Boolean ignComment; /* TRUE if should ignore comments (in a
|
|
* shell command */
|
|
char *line; /* Result */
|
|
char *ep; /* to strip trailing blanks */
|
|
int lineLength; /* Length of result */
|
|
|
|
semiNL = FALSE;
|
|
ignDepOp = FALSE;
|
|
ignComment = FALSE;
|
|
|
|
/*
|
|
* Handle special-characters at the beginning of the line. Either a
|
|
* leading tab (shell command) or pound-sign (possible conditional)
|
|
* forces us to ignore comments and dependency operators and treat
|
|
* semi-colons as semi-colons (by leaving semiNL FALSE). This also
|
|
* discards completely blank lines.
|
|
*/
|
|
for (;;) {
|
|
c = ParseReadc();
|
|
|
|
if (c == '\t') {
|
|
ignComment = ignDepOp = TRUE;
|
|
break;
|
|
} else if (c == '\n') {
|
|
lineno++;
|
|
} else if (c == '#') {
|
|
ParseUnreadc(c);
|
|
break;
|
|
} else {
|
|
/*
|
|
* Anything else breaks out without doing anything
|
|
*/
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (c != EOF) {
|
|
lastc = c;
|
|
buf = Buf_Init(MAKE_BSIZE);
|
|
|
|
while (((c = ParseReadc ()) != '\n' || (lastc == '\\')) &&
|
|
(c != EOF))
|
|
{
|
|
test_char:
|
|
switch(c) {
|
|
case '\n':
|
|
/*
|
|
* Escaped newline: read characters until a non-space or an
|
|
* unescaped newline and replace them all by a single space.
|
|
* This is done by storing the space over the backslash and
|
|
* dropping through with the next nonspace. If it is a
|
|
* semi-colon and semiNL is TRUE, it will be recognized as a
|
|
* newline in the code below this...
|
|
*/
|
|
lineno++;
|
|
lastc = ' ';
|
|
while ((c = ParseReadc ()) == ' ' || c == '\t') {
|
|
continue;
|
|
}
|
|
if (c == EOF || c == '\n') {
|
|
goto line_read;
|
|
} else {
|
|
/*
|
|
* Check for comments, semiNL's, etc. -- easier than
|
|
* ParseUnreadc(c); continue;
|
|
*/
|
|
goto test_char;
|
|
}
|
|
/*NOTREACHED*/
|
|
break;
|
|
|
|
case ';':
|
|
/*
|
|
* Semi-colon: Need to see if it should be interpreted as a
|
|
* newline
|
|
*/
|
|
if (semiNL) {
|
|
/*
|
|
* To make sure the command that may be following this
|
|
* semi-colon begins with a tab, we push one back into the
|
|
* input stream. This will overwrite the semi-colon in the
|
|
* buffer. If there is no command following, this does no
|
|
* harm, since the newline remains in the buffer and the
|
|
* whole line is ignored.
|
|
*/
|
|
ParseUnreadc('\t');
|
|
goto line_read;
|
|
}
|
|
break;
|
|
case '=':
|
|
if (!semiNL) {
|
|
/*
|
|
* Haven't seen a dependency operator before this, so this
|
|
* must be a variable assignment -- don't pay attention to
|
|
* dependency operators after this.
|
|
*/
|
|
ignDepOp = TRUE;
|
|
} else if (lastc == ':' || lastc == '!') {
|
|
/*
|
|
* Well, we've seen a dependency operator already, but it
|
|
* was the previous character, so this is really just an
|
|
* expanded variable assignment. Revert semi-colons to
|
|
* being just semi-colons again and ignore any more
|
|
* dependency operators.
|
|
*
|
|
* XXX: Note that a line like "foo : a:=b" will blow up,
|
|
* but who'd write a line like that anyway?
|
|
*/
|
|
ignDepOp = TRUE; semiNL = FALSE;
|
|
}
|
|
break;
|
|
case '#':
|
|
if (!ignComment) {
|
|
if (
|
|
#if 0
|
|
compatMake &&
|
|
#endif
|
|
(lastc != '\\')) {
|
|
/*
|
|
* If the character is a hash mark and it isn't escaped
|
|
* (or we're being compatible), the thing is a comment.
|
|
* Skip to the end of the line.
|
|
*/
|
|
do {
|
|
c = ParseReadc();
|
|
} while ((c != '\n') && (c != EOF));
|
|
goto line_read;
|
|
} else {
|
|
/*
|
|
* Don't add the backslash. Just let the # get copied
|
|
* over.
|
|
*/
|
|
lastc = c;
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
case ':':
|
|
case '!':
|
|
if (!ignDepOp && (c == ':' || c == '!')) {
|
|
/*
|
|
* A semi-colon is recognized as a newline only on
|
|
* dependency lines. Dependency lines are lines with a
|
|
* colon or an exclamation point. Ergo...
|
|
*/
|
|
semiNL = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
/*
|
|
* Copy in the previous character and save this one in lastc.
|
|
*/
|
|
Buf_AddByte (buf, (Byte)lastc);
|
|
lastc = c;
|
|
|
|
}
|
|
line_read:
|
|
lineno++;
|
|
|
|
if (lastc != '\0') {
|
|
Buf_AddByte (buf, (Byte)lastc);
|
|
}
|
|
Buf_AddByte (buf, (Byte)'\0');
|
|
line = (char *)Buf_GetAll (buf, &lineLength);
|
|
Buf_Destroy (buf, FALSE);
|
|
|
|
/*
|
|
* Strip trailing blanks and tabs from the line.
|
|
* Do not strip a blank or tab that is preceeded by
|
|
* a '\'
|
|
*/
|
|
ep = line;
|
|
while (*ep)
|
|
++ep;
|
|
while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) {
|
|
if (ep > line + 1 && ep[-2] == '\\')
|
|
break;
|
|
--ep;
|
|
}
|
|
*ep = 0;
|
|
|
|
if (line[0] == '.') {
|
|
/*
|
|
* The line might be a conditional. Ask the conditional module
|
|
* about it and act accordingly
|
|
*/
|
|
switch (Cond_Eval (line)) {
|
|
case COND_SKIP:
|
|
/*
|
|
* Skip to next conditional that evaluates to COND_PARSE.
|
|
*/
|
|
do {
|
|
free (line);
|
|
line = ParseSkipLine(1);
|
|
} while (line && Cond_Eval(line) != COND_PARSE);
|
|
if (line == NULL)
|
|
break;
|
|
/*FALLTHRU*/
|
|
case COND_PARSE:
|
|
free ((Address) line);
|
|
line = ParseReadLine();
|
|
break;
|
|
case COND_INVALID:
|
|
if (For_Eval(line)) {
|
|
int ok;
|
|
free(line);
|
|
do {
|
|
/*
|
|
* Skip after the matching end
|
|
*/
|
|
line = ParseSkipLine(0);
|
|
if (line == NULL) {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Unexpected end of file in for loop.\n");
|
|
break;
|
|
}
|
|
ok = For_Eval(line);
|
|
free(line);
|
|
}
|
|
while (ok);
|
|
if (line != NULL)
|
|
For_Run();
|
|
line = ParseReadLine();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return (line);
|
|
|
|
} else {
|
|
/*
|
|
* Hit end-of-file, so return a NULL line to indicate this.
|
|
*/
|
|
return((char *)NULL);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseFinishLine --
|
|
* Handle the end of a dependency group.
|
|
*
|
|
* Results:
|
|
* Nothing.
|
|
*
|
|
* Side Effects:
|
|
* inLine set FALSE. 'targets' list destroyed.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseFinishLine()
|
|
{
|
|
if (inLine) {
|
|
Lst_ForEach(targets, Suff_EndTransform, (ClientData)NULL);
|
|
Lst_Destroy (targets, ParseHasCommands);
|
|
targets = NULL;
|
|
inLine = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_File --
|
|
* Parse a file into its component parts, incorporating it into the
|
|
* current dependency graph. This is the main function and controls
|
|
* almost every other function in this module
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Loads. Nodes are added to the list of all targets, nodes and links
|
|
* are added to the dependency graph. etc. etc. etc.
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_File(name, stream)
|
|
char *name; /* the name of the file being read */
|
|
FILE * stream; /* Stream open to makefile to parse */
|
|
{
|
|
register char *cp, /* pointer into the line */
|
|
*line; /* the line we're working on */
|
|
|
|
inLine = FALSE;
|
|
fname = name;
|
|
curFILE = stream;
|
|
lineno = 0;
|
|
fatals = 0;
|
|
|
|
do {
|
|
while ((line = ParseReadLine ()) != NULL) {
|
|
if (*line == '.') {
|
|
/*
|
|
* Lines that begin with the special character are either
|
|
* include or undef directives.
|
|
*/
|
|
for (cp = line + 1; isspace (*cp); cp++) {
|
|
continue;
|
|
}
|
|
if (strncmp (cp, "include", 7) == 0) {
|
|
ParseDoInclude (cp + 7);
|
|
goto nextLine;
|
|
} else if (strncmp (cp, "error", 5) == 0) {
|
|
ParseDoError(cp + 5);
|
|
goto nextLine;
|
|
} else if (strncmp(cp, "undef", 5) == 0) {
|
|
char *cp2;
|
|
for (cp += 5; isspace((unsigned char) *cp); cp++) {
|
|
continue;
|
|
}
|
|
|
|
for (cp2 = cp; !isspace((unsigned char) *cp2) &&
|
|
(*cp2 != '\0'); cp2++) {
|
|
continue;
|
|
}
|
|
|
|
*cp2 = '\0';
|
|
|
|
Var_Delete(cp, VAR_GLOBAL);
|
|
goto nextLine;
|
|
}
|
|
}
|
|
if (*line == '#') {
|
|
/* If we're this far, the line must be a comment. */
|
|
goto nextLine;
|
|
}
|
|
|
|
if (*line == '\t') {
|
|
/*
|
|
* If a line starts with a tab, it can only hope to be
|
|
* a creation command.
|
|
*/
|
|
#ifndef POSIX
|
|
shellCommand:
|
|
#endif
|
|
for (cp = line + 1; isspace (*cp); cp++) {
|
|
continue;
|
|
}
|
|
if (*cp) {
|
|
if (inLine) {
|
|
/*
|
|
* So long as it's not a blank line and we're actually
|
|
* in a dependency spec, add the command to the list of
|
|
* commands of all targets in the dependency spec
|
|
*/
|
|
Lst_ForEach (targets, ParseAddCmd, cp);
|
|
Lst_AtEnd(targCmds, (ClientData) line);
|
|
continue;
|
|
} else {
|
|
Parse_Error (PARSE_FATAL,
|
|
"Unassociated shell command \"%s\"",
|
|
cp);
|
|
}
|
|
}
|
|
#ifdef SYSVINCLUDE
|
|
} else if (strncmp (line, "include", 7) == 0 &&
|
|
isspace((unsigned char) line[7]) &&
|
|
strchr(line, ':') == NULL) {
|
|
/*
|
|
* It's an S3/S5-style "include".
|
|
*/
|
|
ParseTraditionalInclude (line + 7);
|
|
goto nextLine;
|
|
#endif
|
|
} else if (Parse_IsVar (line)) {
|
|
ParseFinishLine();
|
|
Parse_DoVar (line, VAR_GLOBAL);
|
|
} else {
|
|
/*
|
|
* We now know it's a dependency line so it needs to have all
|
|
* variables expanded before being parsed. Tell the variable
|
|
* module to complain if some variable is undefined...
|
|
* To make life easier on novices, if the line is indented we
|
|
* first make sure the line has a dependency operator in it.
|
|
* If it doesn't have an operator and we're in a dependency
|
|
* line's script, we assume it's actually a shell command
|
|
* and add it to the current list of targets.
|
|
*/
|
|
#ifndef POSIX
|
|
Boolean nonSpace = FALSE;
|
|
#endif
|
|
|
|
cp = line;
|
|
if (isspace((unsigned char) line[0])) {
|
|
while ((*cp != '\0') && isspace((unsigned char) *cp)) {
|
|
cp++;
|
|
}
|
|
if (*cp == '\0') {
|
|
goto nextLine;
|
|
}
|
|
#ifndef POSIX
|
|
while ((*cp != ':') && (*cp != '!') && (*cp != '\0')) {
|
|
nonSpace = TRUE;
|
|
cp++;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifndef POSIX
|
|
if (*cp == '\0') {
|
|
if (inLine) {
|
|
Parse_Error (PARSE_WARNING,
|
|
"Shell command needs a leading tab");
|
|
goto shellCommand;
|
|
} else if (nonSpace) {
|
|
Parse_Error (PARSE_FATAL, "Missing operator");
|
|
}
|
|
} else {
|
|
#endif
|
|
ParseFinishLine();
|
|
|
|
cp = Var_Subst (NULL, line, VAR_CMD, TRUE);
|
|
free (line);
|
|
line = cp;
|
|
|
|
/*
|
|
* Need a non-circular list for the target nodes
|
|
*/
|
|
if (targets)
|
|
Lst_Destroy(targets, NOFREE);
|
|
|
|
targets = Lst_Init (FALSE);
|
|
inLine = TRUE;
|
|
|
|
ParseDoDependency (line);
|
|
#ifndef POSIX
|
|
}
|
|
#endif
|
|
}
|
|
|
|
nextLine:
|
|
|
|
free (line);
|
|
}
|
|
/*
|
|
* Reached EOF, but it may be just EOF of an include file...
|
|
*/
|
|
} while (ParseEOF(1) == CONTINUE);
|
|
|
|
/*
|
|
* Make sure conditionals are clean
|
|
*/
|
|
Cond_End();
|
|
|
|
if (fatals)
|
|
errx(1, "fatal errors encountered -- cannot continue");
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_Init --
|
|
* initialize the parsing module
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* the parseIncPath list is initialized...
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_Init ()
|
|
{
|
|
mainNode = NILGNODE;
|
|
parseIncPath = Lst_Init (FALSE);
|
|
sysIncPath = Lst_Init (FALSE);
|
|
includes = Lst_Init (FALSE);
|
|
targCmds = Lst_Init (FALSE);
|
|
}
|
|
|
|
void
|
|
Parse_End()
|
|
{
|
|
Lst_Destroy(targCmds, (void (*) __P((ClientData))) free);
|
|
if (targets)
|
|
Lst_Destroy(targets, NOFREE);
|
|
Lst_Destroy(sysIncPath, Dir_Destroy);
|
|
Lst_Destroy(parseIncPath, Dir_Destroy);
|
|
Lst_Destroy(includes, NOFREE); /* Should be empty now */
|
|
}
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Parse_MainName --
|
|
* Return a Lst of the main target to create for main()'s sake. If
|
|
* no such target exists, we Punt with an obnoxious error message.
|
|
*
|
|
* Results:
|
|
* A Lst of the single node to create.
|
|
*
|
|
* Side Effects:
|
|
* None.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Lst
|
|
Parse_MainName()
|
|
{
|
|
Lst main; /* result list */
|
|
|
|
main = Lst_Init (FALSE);
|
|
|
|
if (mainNode == NILGNODE) {
|
|
Punt ("no target to make.");
|
|
/*NOTREACHED*/
|
|
} else if (mainNode->type & OP_DOUBLEDEP) {
|
|
(void) Lst_AtEnd (main, (ClientData)mainNode);
|
|
Lst_Concat(main, mainNode->cohorts, LST_CONCNEW);
|
|
}
|
|
else
|
|
(void) Lst_AtEnd (main, (ClientData)mainNode);
|
|
return (main);
|
|
}
|