ad9165a038
"remaking makefiles" feature. Otherwise, follow traditional Pmake behavior. (hash table will be regenerated and committed follow this commit)
2540 lines
61 KiB
C
2540 lines
61 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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* @(#)parse.c 8.3 (Berkeley) 3/19/94
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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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* 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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* Interface:
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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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*
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* Parse_MainName Returns a Lst of the main target to create.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include <err.h>
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#include "arch.h"
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#include "buf.h"
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#include "cond.h"
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#include "config.h"
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#include "dir.h"
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#include "for.h"
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#include "globals.h"
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#include "GNode.h"
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#include "hash_tables.h"
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#include "job.h"
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#include "make.h"
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#include "parse.h"
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#include "pathnames.h"
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#include "shell.h"
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#include "str.h"
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#include "suff.h"
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#include "targ.h"
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#include "util.h"
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#include "var.h"
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/*
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* These values are returned by ParsePopInput 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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/* targets we're working on */
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static Lst targets = Lst_Initializer(targets);
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/* true if currently in a dependency line or its commands */
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static Boolean inLine;
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static int fatals = 0;
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/*
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* The main target to create. This is the first target on the
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* first dependency line in the first makefile.
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*/
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static GNode *mainNode;
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/*
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* Definitions for handling #include specifications
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*/
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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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char *str; /* the string when parsing a string */
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char *ptr; /* the current pointer when parsing a string */
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TAILQ_ENTRY(IFile) link;/* stack the files */
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};
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/* stack of IFiles generated by * #includes */
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static TAILQ_HEAD(, IFile) includes = TAILQ_HEAD_INITIALIZER(includes);
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/* access current file */
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#define CURFILE (TAILQ_FIRST(&includes))
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/* list of directories for "..." includes */
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struct Path parseIncPath = TAILQ_HEAD_INITIALIZER(parseIncPath);
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/* list of directories for <...> includes */
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struct Path sysIncPath = TAILQ_HEAD_INITIALIZER(sysIncPath);
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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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ExportVar, /* .EXPORTVAR */
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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 anyth. user-spec. to make */
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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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Posix, /* .POSIX */
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MakefileDeps, /* .MAKEFILEDEPS */
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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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Warn, /* .WARN */
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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 NULL when .ORDER
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* seen, then set to each successive source on the line.
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*/
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static GNode *predecessor;
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/*
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* The parseKeywords table is searched using binary search when deciding
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* if a target or source is special. The 'spec' field is the ParseSpecial
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* type of the keyword ("Not" if the keyword isn't special as a target) while
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* the 'op' field is the operator to apply to the list of targets if the
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* keyword is used as a source ("0" if the keyword isn't special as a source)
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*/
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static const struct keyword {
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const char *name; /* Name of keyword */
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ParseSpecial spec; /* Type when used as a target */
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int op; /* Operator when used as a source */
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} parseKeywords[] = {
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/* KEYWORD-START-TAG */
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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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{ ".EXPORTVAR", ExportVar, 0 },
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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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{ ".MAKEFILEDEPS", MakefileDeps, 0 },
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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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{ ".POSIX", Posix, 0 },
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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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{ ".WARN", Warn, 0 },
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/* KEYWORD-END-TAG */
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};
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#define NKEYWORDS (sizeof(parseKeywords) / sizeof(parseKeywords[0]))
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static void parse_include(char *, int, int);
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static void parse_sinclude(char *, int, int);
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static void parse_message(char *, int, int);
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static void parse_undef(char *, int, int);
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static void parse_for(char *, int, int);
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static void parse_endfor(char *, int, int);
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static const struct directive {
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const char *name;
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int code;
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Boolean skip_flag; /* execute even when skipped */
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void (*func)(char *, int, int);
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} directives[] = {
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/* DIRECTIVES-START-TAG */
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{ "elif", COND_ELIF, TRUE, Cond_If },
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{ "elifdef", COND_ELIFDEF, TRUE, Cond_If },
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{ "elifmake", COND_ELIFMAKE, TRUE, Cond_If },
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{ "elifndef", COND_ELIFNDEF, TRUE, Cond_If },
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{ "elifnmake", COND_ELIFNMAKE, TRUE, Cond_If },
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{ "else", COND_ELSE, TRUE, Cond_Else },
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{ "endfor", 0, FALSE, parse_endfor },
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{ "endif", COND_ENDIF, TRUE, Cond_Endif },
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{ "error", 1, FALSE, parse_message },
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{ "for", 0, FALSE, parse_for },
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{ "if", COND_IF, TRUE, Cond_If },
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{ "ifdef", COND_IFDEF, TRUE, Cond_If },
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{ "ifmake", COND_IFMAKE, TRUE, Cond_If },
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{ "ifndef", COND_IFNDEF, TRUE, Cond_If },
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{ "ifnmake", COND_IFNMAKE, TRUE, Cond_If },
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{ "include", 0, FALSE, parse_include },
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{ "sinclude", 0, FALSE, parse_sinclude },
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{ "undef", 0, FALSE, parse_undef },
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{ "warning", 0, FALSE, parse_message },
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/* DIRECTIVES-END-TAG */
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};
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#define NDIRECTS (sizeof(directives) / sizeof(directives[0]))
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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 pointer to keyword table entry or NULL.
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*/
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static const struct keyword *
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ParseFindKeyword(const char *str)
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{
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int kw;
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kw = keyword_hash(str, strlen(str));
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if (kw < 0 || kw >= (int)NKEYWORDS ||
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strcmp(str, parseKeywords[kw].name) != 0)
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return (NULL);
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return (&parseKeywords[kw]);
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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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Parse_Error(int type, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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if (CURFILE != NULL)
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fprintf(stderr, "\"%s\", line %d: ",
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CURFILE->fname, CURFILE->lineno);
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if (type == PARSE_WARNING)
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fprintf(stderr, "warning: ");
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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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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* ParsePushInput
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*
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* Push a new input source onto the input stack. If ptr is NULL
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* the fullname is used to fopen the file. If it is not NULL,
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* ptr is assumed to point to the string to be parsed. If opening the
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* file fails, the fullname is freed.
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*/
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static void
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ParsePushInput(char *fullname, FILE *fp, char *ptr, int lineno)
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{
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struct IFile *nf;
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nf = emalloc(sizeof(*nf));
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nf->fname = fullname;
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nf->lineno = lineno;
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if (ptr == NULL) {
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/* the input source is a file */
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if ((nf->F = fp) == NULL) {
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nf->F = fopen(fullname, "r");
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if (nf->F == NULL) {
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Parse_Error(PARSE_FATAL, "Cannot open %s",
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fullname);
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free(fullname);
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free(nf);
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return;
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}
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}
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nf->str = nf->ptr = NULL;
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Var_Append(".MAKEFILE_LIST", fullname, VAR_GLOBAL);
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} else {
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nf->str = nf->ptr = ptr;
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nf->F = NULL;
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}
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TAILQ_INSERT_HEAD(&includes, nf, link);
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}
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/**
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* ParsePopInput
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* Called when EOF is reached in the current file. If we were reading
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* an include file, the includes stack is popped and things set up
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* to go back to reading the previous file at the previous location.
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*
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* Results:
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* CONTINUE if there's more to do. DONE if not.
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*
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* Side Effects:
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* The old curFile.F is closed. The includes list is shortened.
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* curFile.lineno, curFile.F, and curFile.fname are changed if
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* CONTINUE is returned.
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*/
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static int
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ParsePopInput(void)
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{
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struct IFile *ifile; /* the state on the top of the includes stack */
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assert(!TAILQ_EMPTY(&includes));
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ifile = TAILQ_FIRST(&includes);
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TAILQ_REMOVE(&includes, ifile, link);
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free(ifile->fname);
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if (ifile->F != NULL) {
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fclose(ifile->F);
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Var_Append(".MAKEFILE_LIST", "..", VAR_GLOBAL);
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}
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if (ifile->str != NULL) {
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free(ifile->str);
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}
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free(ifile);
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return (TAILQ_EMPTY(&includes) ? DONE : CONTINUE);
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}
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/**
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* parse_warn
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* Parse the .WARN pseudo-target.
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*/
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static void
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parse_warn(char *line)
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{
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ArgArray aa;
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int i;
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brk_string(&aa, line, TRUE);
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for (i = 1; i < aa.argc; i++)
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Main_ParseWarn(aa.argv[i], 0);
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}
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/*-
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*---------------------------------------------------------------------
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* ParseLinkSrc --
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* Link the parent nodes to their new child. Used 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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* Side Effects:
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* New elements are added to the parents lists 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 void
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ParseLinkSrc(Lst *parents, GNode *cgn)
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{
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LstNode *ln;
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GNode *pgn;
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LST_FOREACH(ln, parents) {
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pgn = Lst_Datum(ln);
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if (Lst_Member(&pgn->children, cgn) == NULL) {
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Lst_AtEnd(&pgn->children, cgn);
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if (specType == Not) {
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Lst_AtEnd(&cgn->parents, pgn);
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}
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pgn->unmade += 1;
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}
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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 all target nodes. Used in
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* ParseDoDependency once all targets have been found and their
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* operator parsed. If the previous and new operators are incompatible,
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* a major error is taken.
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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 void
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ParseDoOp(int op)
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{
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GNode *cohort;
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LstNode *ln;
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GNode *gn;
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LST_FOREACH(ln, &targets) {
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gn = Lst_Datum(ln);
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/*
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* If the dependency mask of the operator and the node don't
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* match and the node has actually had an operator applied to
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* it before, and the operator actually has some dependency
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* 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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Parse_Error(PARSE_FATAL, "Inconsistent operator for %s",
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gn->name);
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return;
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}
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if (op == OP_DOUBLEDEP &&
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(gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
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/*
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* If the node was the object of a :: operator, we need
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* to create a new instance of it for the children and
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* commands on this dependency line. The new instance
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* is placed on the 'cohorts' list of the initial one
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* (note the initial one is not on its own cohorts list)
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* and the new instance is linked to all parents of the
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* initial instance.
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*/
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cohort = Targ_NewGN(gn->name);
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/*
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* Duplicate links to parents so graph traversal is
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* simple. Perhaps some type bits should be duplicated?
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*
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* Make the cohort invisible as well to avoid
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* duplicating it into other variables. True, parents
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* of this target won't tend to do anything with their
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* local variables, but better safe than sorry.
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*/
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ParseLinkSrc(&gn->parents, cohort);
|
|
cohort->type = OP_DOUBLEDEP|OP_INVISIBLE;
|
|
Lst_AtEnd(&gn->cohorts, cohort);
|
|
|
|
/*
|
|
* Replace the node in the targets list with the
|
|
* new copy
|
|
*/
|
|
Lst_Replace(ln, 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;
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* 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(int tOp, char *src, Lst *allsrc)
|
|
{
|
|
GNode *gn = NULL;
|
|
const struct keyword *kw;
|
|
|
|
if (src[0] == '.' && isupper ((unsigned char)src[1])) {
|
|
if ((kw = ParseFindKeyword(src)) != NULL) {
|
|
if (kw->op != 0) {
|
|
ParseDoOp(kw->op);
|
|
return;
|
|
}
|
|
if (kw->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...
|
|
*/
|
|
Lst_AtEnd(&create, estrdup(src));
|
|
/*
|
|
* Add the name to the .TARGETS variable as well, so the user
|
|
* can employ that, if desired.
|
|
*/
|
|
Var_Append(".TARGETS", src, VAR_GLOBAL);
|
|
return;
|
|
|
|
case Order:
|
|
/*
|
|
* Create proper predecessor/successor links between the
|
|
* previous source and the current one.
|
|
*/
|
|
gn = Targ_FindNode(src, TARG_CREATE);
|
|
if (predecessor != NULL) {
|
|
Lst_AtEnd(&predecessor->successors, gn);
|
|
Lst_AtEnd(&gn->preds, 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 {
|
|
ParseLinkSrc(&targets, gn);
|
|
}
|
|
if ((gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
|
|
GNode *cohort;
|
|
LstNode *ln;
|
|
|
|
for (ln = Lst_First(&gn->cohorts); ln != NULL;
|
|
ln = Lst_Succ(ln)) {
|
|
cohort = Lst_Datum(ln);
|
|
if (tOp) {
|
|
cohort->type |= tOp;
|
|
} else {
|
|
ParseLinkSrc(&targets, cohort);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
gn->order = waiting;
|
|
Lst_AtEnd(allsrc, gn);
|
|
if (waiting) {
|
|
LstNode *ln;
|
|
GNode *p;
|
|
|
|
/*
|
|
* Check if GNodes needs to be synchronized.
|
|
* This has to be when two nodes are on different sides of a
|
|
* .WAIT directive.
|
|
*/
|
|
LST_FOREACH(ln, allsrc) {
|
|
p = Lst_Datum(ln);
|
|
|
|
if (p->order >= gn->order)
|
|
break;
|
|
/*
|
|
* XXX: This can cause loops, and loops can cause
|
|
* unmade targets, but checking is tedious, and the
|
|
* debugging output can show the problem
|
|
*/
|
|
Lst_AtEnd(&p->successors, gn);
|
|
Lst_AtEnd(&gn->preds, p);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* 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(char *line)
|
|
{
|
|
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; /* Search paths to alter when parsing .PATH targets */
|
|
int tOp; /* operator from special target */
|
|
LstNode *ln;
|
|
const struct keyword *kw;
|
|
|
|
tOp = 0;
|
|
|
|
specType = Not;
|
|
waiting = 0;
|
|
Lst_Init(&paths);
|
|
|
|
do {
|
|
for (cp = line;
|
|
*cp && !isspace((unsigned char)*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.
|
|
*/
|
|
size_t length = 0;
|
|
Boolean freeIt;
|
|
char *result;
|
|
|
|
result = Var_Parse(cp, VAR_CMD, TRUE,
|
|
&length, &freeIt);
|
|
|
|
if (freeIt) {
|
|
free(result);
|
|
}
|
|
cp += length - 1;
|
|
|
|
} else if (*cp == '!' || *cp == ':') {
|
|
/*
|
|
* We don't want to end a word on ':' or '!' if
|
|
* there is a better match later on in the
|
|
* string (greedy matching).
|
|
* This allows the user to have targets like:
|
|
* fie::fi:fo: fum
|
|
* foo::bar:
|
|
* where "fie::fi:fo" and "foo::bar" are the
|
|
* targets. In real life this is used for perl5
|
|
* library man pages where "::" separates an
|
|
* object from its class. Ie:
|
|
* "File::Spec::Unix". This behaviour is also
|
|
* consistent with other versions of make.
|
|
*/
|
|
char *p = cp + 1;
|
|
|
|
if (*cp == ':' && *p == ':')
|
|
p++;
|
|
|
|
/* Found the best match already. */
|
|
if (*p == '\0' || isspace(*p))
|
|
break;
|
|
|
|
p += strcspn(p, "!:");
|
|
|
|
/* No better match later on... */
|
|
if (*p == '\0')
|
|
break;
|
|
}
|
|
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 TRUE
|
|
* if all went well and FALSE if there was an error in
|
|
* the specification. On error, line should remain
|
|
* untouched.
|
|
*/
|
|
if (!Arch_ParseArchive(&line, &targets, VAR_CMD)) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Error in archive specification: \"%s\"",
|
|
line);
|
|
return;
|
|
} else {
|
|
cp = line;
|
|
continue;
|
|
}
|
|
}
|
|
savec = *cp;
|
|
|
|
if (!*cp) {
|
|
/*
|
|
* Ending a dependency line without an operator is a * Bozo no-no. As a heuristic, this is also often
|
|
* triggered by undetected conflicts from cvs/rcs
|
|
* merges.
|
|
*/
|
|
if (strncmp(line, "<<<<<<", 6) == 0 ||
|
|
strncmp(line, "======", 6) == 0 ||
|
|
strncmp(line, ">>>>>>", 6) == 0) {
|
|
Parse_Error(PARSE_FATAL, "Makefile appears to "
|
|
"contain unresolved cvs/rcs/??? merge "
|
|
"conflicts");
|
|
} else
|
|
Parse_Error(PARSE_FATAL, "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((unsigned char)line[1])) {
|
|
/*
|
|
* See if the target is a special target that must have
|
|
* it or its sources handled specially.
|
|
*/
|
|
if ((kw = ParseFindKeyword(line)) != NULL) {
|
|
if (specType == ExPath && kw->spec != ExPath) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Mismatched special targets");
|
|
return;
|
|
}
|
|
|
|
specType = kw->spec;
|
|
tOp = kw->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 NULL
|
|
*/
|
|
switch (specType) {
|
|
case ExPath:
|
|
Lst_AtEnd(&paths, &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;
|
|
Lst_AtEnd(&targets, gn);
|
|
break;
|
|
case Default:
|
|
gn = Targ_NewGN(".DEFAULT");
|
|
gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
|
|
Lst_AtEnd(&targets, gn);
|
|
DEFAULT = gn;
|
|
break;
|
|
case NotParallel:
|
|
jobLimit = 1;
|
|
break;
|
|
case SingleShell:
|
|
compatMake = 1;
|
|
break;
|
|
case Order:
|
|
predecessor = NULL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
} else if (strncmp(line, ".PATH", 5) == 0) {
|
|
/*
|
|
* .PATH<suffix> has to be handled specially.
|
|
* Call on the suffix module to give us a path
|
|
* to modify.
|
|
*/
|
|
struct Path *path;
|
|
|
|
specType = ExPath;
|
|
path = Suff_GetPath(&line[5]);
|
|
if (path == NULL) {
|
|
Parse_Error(PARSE_FATAL, "Suffix '%s' "
|
|
"not defined (yet)", &line[5]);
|
|
return;
|
|
} else
|
|
Lst_AtEnd(&paths, path);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Have word in line. Get or create its node and stick it at
|
|
* the end of the targets list
|
|
*/
|
|
if (specType == Not && *line != '\0') {
|
|
|
|
/* target names to be found and added to targets list */
|
|
Lst curTargs = Lst_Initializer(curTargs);
|
|
|
|
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 Path_Clear in the
|
|
* destruction of the path as the Dir module
|
|
* could have added a directory to the path...
|
|
*/
|
|
struct Path emptyPath =
|
|
TAILQ_HEAD_INITIALIZER(emptyPath);
|
|
|
|
Path_Expand(line, &emptyPath, &curTargs);
|
|
Path_Clear(&emptyPath);
|
|
|
|
} else {
|
|
/*
|
|
* No wildcards, but we want to avoid code
|
|
* duplication, so create a list with the word
|
|
* on it.
|
|
*/
|
|
Lst_AtEnd(&curTargs, line);
|
|
}
|
|
|
|
while (!Lst_IsEmpty(&curTargs)) {
|
|
char *targName = Lst_DeQueue(&curTargs);
|
|
|
|
if (!Suff_IsTransform (targName)) {
|
|
gn = Targ_FindNode(targName,
|
|
TARG_CREATE);
|
|
} else {
|
|
gn = Suff_AddTransform(targName);
|
|
}
|
|
|
|
Lst_AtEnd(&targets, 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 warnFlag = FALSE;
|
|
|
|
while (*cp != '!' && *cp != ':' && *cp) {
|
|
if (*cp != ' ' && *cp != '\t') {
|
|
warnFlag = TRUE;
|
|
}
|
|
cp++;
|
|
}
|
|
if (warnFlag) {
|
|
Parse_Error(PARSE_WARNING,
|
|
"Extra target ignored");
|
|
}
|
|
} else {
|
|
while (*cp && isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
}
|
|
line = cp;
|
|
} while (*line != '!' && *line != ':' && *line);
|
|
|
|
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 */
|
|
|
|
ParseDoOp(op);
|
|
|
|
/*
|
|
* Get to the first source
|
|
*/
|
|
while (*cp && isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
|
|
/*
|
|
* Several special targets take different actions if present with no
|
|
* sources:
|
|
* a .SUFFIXES line with no sources clears out all old suffixes
|
|
* a .PRECIOUS line makes all targets precious
|
|
* a .IGNORE line ignores errors for all targets
|
|
* a .SILENT line creates silence when making all targets
|
|
* a .PATH removes all directories from the search path(s).
|
|
*/
|
|
if (!*line) {
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_ClearSuffixes();
|
|
break;
|
|
case Precious:
|
|
allPrecious = TRUE;
|
|
break;
|
|
case Ignore:
|
|
ignoreErrors = TRUE;
|
|
break;
|
|
case Silent:
|
|
beSilent = TRUE;
|
|
break;
|
|
case ExPath:
|
|
LST_FOREACH(ln, &paths)
|
|
Path_Clear(Lst_Datum(ln));
|
|
break;
|
|
case MakefileDeps:
|
|
mfAutoDeps = TRUE;
|
|
break;
|
|
case Posix:
|
|
is_posix = TRUE;
|
|
Var_Set("%POSIX", "1003.2", VAR_GLOBAL);
|
|
break;
|
|
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, 0);
|
|
*line = '\0';
|
|
|
|
} else if (specType == Warn) {
|
|
parse_warn(line);
|
|
*line = '\0';
|
|
|
|
} else if (specType == ExShell) {
|
|
if (!Shell_Parse(line)) {
|
|
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 savech;
|
|
while (*cp && !isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
savech = *cp;
|
|
*cp = '\0';
|
|
switch (specType) {
|
|
case Suffixes:
|
|
Suff_AddSuffix(line);
|
|
break;
|
|
case ExPath:
|
|
LST_FOREACH(ln, &paths)
|
|
Path_AddDir(Lst_Datum(ln), line);
|
|
break;
|
|
case Includes:
|
|
Suff_AddInclude(line);
|
|
break;
|
|
case Libs:
|
|
Suff_AddLib(line);
|
|
break;
|
|
case Null:
|
|
Suff_SetNull(line);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
*cp = savech;
|
|
if (savech != '\0') {
|
|
cp++;
|
|
}
|
|
while (*cp && isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
Lst_Destroy(&paths, NOFREE);
|
|
|
|
} else if (specType == ExportVar) {
|
|
Var_SetEnv(line, VAR_GLOBAL);
|
|
|
|
} else {
|
|
/* list of sources in order */
|
|
Lst curSrcs = Lst_Initializer(curSrc);
|
|
|
|
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((unsigned char)*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 *gnp;
|
|
|
|
/* list of archive source names after exp. */
|
|
Lst sources = Lst_Initializer(sources);
|
|
|
|
if (!Arch_ParseArchive(&line, &sources,
|
|
VAR_CMD)) {
|
|
Parse_Error(PARSE_FATAL, "Error in "
|
|
"source archive spec \"%s\"", line);
|
|
return;
|
|
}
|
|
|
|
while (!Lst_IsEmpty(&sources)) {
|
|
gnp = Lst_DeQueue(&sources);
|
|
ParseDoSrc(tOp, gnp->name, &curSrcs);
|
|
}
|
|
cp = line;
|
|
} else {
|
|
if (*cp) {
|
|
*cp = '\0';
|
|
cp += 1;
|
|
}
|
|
|
|
ParseDoSrc(tOp, line, &curSrcs);
|
|
}
|
|
while (*cp && isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
line = cp;
|
|
}
|
|
Lst_Destroy(&curSrcs, NOFREE);
|
|
}
|
|
|
|
if (mainNode == NULL) {
|
|
/*
|
|
* If we have yet to decide on a main target to make, in the
|
|
* absence of any user input, we want the first target on
|
|
* the first dependency line that is actually a real target
|
|
* (i.e. isn't a .USE or .EXEC rule) to be made.
|
|
*/
|
|
LST_FOREACH(ln, &targets) {
|
|
gn = Lst_Datum(ln);
|
|
if ((gn->type & (OP_NOTMAIN | OP_USE |
|
|
OP_EXEC | OP_TRANSFORM)) == 0) {
|
|
mainNode = gn;
|
|
Targ_SetMain(gn);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* 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(char *line)
|
|
{
|
|
Boolean wasSpace = FALSE; /* set TRUE if found a space */
|
|
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(char *line, GNode *ctxt)
|
|
{
|
|
char *cp; /* pointer into line */
|
|
enum {
|
|
VAR_SUBST,
|
|
VAR_APPEND,
|
|
VAR_SHELL,
|
|
VAR_NORMAL
|
|
} type; /* Type of assignment */
|
|
char *opc; /* ptr to operator character to
|
|
* null-terminate the variable name */
|
|
|
|
/*
|
|
* 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((unsigned char)*cp)) {
|
|
*cp = '\0';
|
|
}
|
|
}
|
|
opc = cp - 1; /* operator is the previous character */
|
|
*cp++ = '\0'; /* nuke the = */
|
|
|
|
/*
|
|
* Check operator type
|
|
*/
|
|
switch (*opc) {
|
|
case '+':
|
|
type = VAR_APPEND;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '?':
|
|
/*
|
|
* If the variable already has a value, we don't do anything.
|
|
*/
|
|
*opc = '\0';
|
|
if (Var_Exists(line, ctxt)) {
|
|
return;
|
|
} else {
|
|
type = VAR_NORMAL;
|
|
}
|
|
break;
|
|
|
|
case ':':
|
|
type = VAR_SUBST;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
case '!':
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
|
|
default:
|
|
#ifdef SUNSHCMD
|
|
while (*opc != ':') {
|
|
if (opc == line)
|
|
break;
|
|
else
|
|
--opc;
|
|
}
|
|
|
|
if (strncmp(opc, ":sh", 3) == 0) {
|
|
type = VAR_SHELL;
|
|
*opc = '\0';
|
|
break;
|
|
}
|
|
#endif
|
|
type = VAR_NORMAL;
|
|
break;
|
|
}
|
|
|
|
while (isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
|
|
if (type == VAR_APPEND) {
|
|
Var_Append(line, cp, ctxt);
|
|
|
|
} else if (type == VAR_SUBST) {
|
|
/*
|
|
* Allow variables in the old value to be undefined, but leave
|
|
* their invocation alone -- this is done by forcing oldVars
|
|
* to be false.
|
|
* XXX: This can cause recursive variables, but that's not
|
|
* hard to do, and this allows someone to do something like
|
|
*
|
|
* CFLAGS = $(.INCLUDES)
|
|
* CFLAGS := -I.. $(CFLAGS)
|
|
*
|
|
* And not get an error.
|
|
*/
|
|
Boolean oldOldVars = oldVars;
|
|
|
|
oldVars = FALSE;
|
|
|
|
/*
|
|
* make sure that we set the variable the first time to nothing
|
|
* so that it gets substituted!
|
|
*/
|
|
if (!Var_Exists(line, ctxt))
|
|
Var_Set(line, "", ctxt);
|
|
|
|
cp = Buf_Peel(Var_Subst(cp, ctxt, FALSE));
|
|
|
|
oldVars = oldOldVars;
|
|
|
|
Var_Set(line, cp, ctxt);
|
|
free(cp);
|
|
|
|
} else if (type == VAR_SHELL) {
|
|
/*
|
|
* TRUE if the command needs to be freed, i.e.
|
|
* if any variable expansion was performed
|
|
*/
|
|
Boolean freeCmd = FALSE;
|
|
Buffer *buf;
|
|
const char *error;
|
|
|
|
if (strchr(cp, '$') != NULL) {
|
|
/*
|
|
* There's a dollar sign in the command, so perform
|
|
* variable expansion on the whole thing. The
|
|
* resulting string will need freeing when we're done,
|
|
* so set freeCmd to TRUE.
|
|
*/
|
|
cp = Buf_Peel(Var_Subst(cp, VAR_CMD, TRUE));
|
|
freeCmd = TRUE;
|
|
}
|
|
|
|
buf = Cmd_Exec(cp, &error);
|
|
Var_Set(line, Buf_Data(buf), ctxt);
|
|
Buf_Destroy(buf, TRUE);
|
|
|
|
if (error)
|
|
Parse_Error(PARSE_WARNING, error, cp);
|
|
|
|
if (freeCmd)
|
|
free(cp);
|
|
|
|
} else {
|
|
/*
|
|
* Normal assignment -- just do it.
|
|
*/
|
|
Var_Set(line, cp, ctxt);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* 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(void *gnp)
|
|
{
|
|
GNode *gn = 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(char *dir)
|
|
{
|
|
|
|
Path_AddDir(&parseIncPath, dir);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* Parse_FromString --
|
|
* Start Parsing from the given string
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A structure is added to the includes Lst and readProc, curFile.lineno,
|
|
* curFile.fname and curFile.F are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_FromString(char *str, int lineno)
|
|
{
|
|
|
|
DEBUGF(FOR, ("%s\n---- at line %d\n", str, lineno));
|
|
|
|
ParsePushInput(estrdup(CURFILE->fname), NULL, str, lineno);
|
|
}
|
|
|
|
#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, curFile.lineno,
|
|
* curFile.fname and curFile.F are altered for the new file
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseTraditionalInclude(char *file)
|
|
{
|
|
char *fullname; /* full pathname of file */
|
|
char *cp; /* current position in file spec */
|
|
|
|
/*
|
|
* 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 = Buf_Peel(Var_Subst(file, VAR_CMD, FALSE));
|
|
|
|
/*
|
|
* Now we know the file's name, we attempt to find the durn thing.
|
|
* Search for it first on the -I search path, then on the .PATH
|
|
* search path, if not found in a -I directory.
|
|
*/
|
|
fullname = Path_FindFile(file, &parseIncPath);
|
|
if (fullname == NULL) {
|
|
fullname = Path_FindFile(file, &dirSearchPath);
|
|
}
|
|
|
|
if (fullname == NULL) {
|
|
/*
|
|
* Still haven't found the makefile. Look for it on the system
|
|
* path as a last resort.
|
|
*/
|
|
fullname = Path_FindFile(file, &sysIncPath);
|
|
}
|
|
|
|
if (fullname == NULL) {
|
|
Parse_Error(PARSE_FATAL, "Could not find %s", file);
|
|
/* XXXHB free(file) */
|
|
return;
|
|
}
|
|
|
|
/* XXXHB free(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.
|
|
*/
|
|
ParsePushInput(fullname, NULL, NULL, 0);
|
|
}
|
|
#endif
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseReadc --
|
|
* Read a character from the current file
|
|
*
|
|
* Results:
|
|
* The character that was read
|
|
*
|
|
* Side Effects:
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ParseReadc(void)
|
|
{
|
|
|
|
if (CURFILE->F != NULL)
|
|
return (fgetc(CURFILE->F));
|
|
|
|
if (CURFILE->str != NULL && *CURFILE->ptr != '\0')
|
|
return (*CURFILE->ptr++);
|
|
|
|
return (EOF);
|
|
}
|
|
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* ParseUnreadc --
|
|
* Put back a character to the current file
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
*---------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseUnreadc(int c)
|
|
{
|
|
|
|
if (CURFILE->F != NULL) {
|
|
ungetc(c, CURFILE->F);
|
|
return;
|
|
}
|
|
if (CURFILE->str != NULL) {
|
|
*--(CURFILE->ptr) = c;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* ParseSkipLine():
|
|
* Grab the next line unless it begins with a dot (`.') and we're told to
|
|
* ignore such lines.
|
|
*/
|
|
static char *
|
|
ParseSkipLine(int skip, int keep_newline)
|
|
{
|
|
char *line;
|
|
int c, lastc;
|
|
Buffer *buf;
|
|
|
|
buf = Buf_Init(MAKE_BSIZE);
|
|
|
|
do {
|
|
Buf_Clear(buf);
|
|
lastc = '\0';
|
|
|
|
while (((c = ParseReadc()) != '\n' || lastc == '\\')
|
|
&& c != EOF) {
|
|
if (skip && c == '#' && lastc != '\\') {
|
|
/*
|
|
* let a comment be terminated even by an
|
|
* escaped \n. This is consistent to comment
|
|
* handling in ParseReadLine
|
|
*/
|
|
while ((c = ParseReadc()) != '\n' && c != EOF)
|
|
;
|
|
break;
|
|
}
|
|
if (c == '\n') {
|
|
if (keep_newline)
|
|
Buf_AddByte(buf, (Byte)c);
|
|
else
|
|
Buf_ReplaceLastByte(buf, (Byte)' ');
|
|
CURFILE->lineno++;
|
|
|
|
while ((c = ParseReadc()) == ' ' || c == '\t')
|
|
continue;
|
|
|
|
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 (NULL);
|
|
}
|
|
|
|
CURFILE->lineno++;
|
|
Buf_AddByte(buf, (Byte)'\0');
|
|
line = Buf_Data(buf);
|
|
} 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(void)
|
|
{
|
|
Buffer *buf; /* Buffer for current line */
|
|
int c; /* the current character */
|
|
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 */
|
|
|
|
again:
|
|
semiNL = FALSE;
|
|
ignDepOp = FALSE;
|
|
ignComment = FALSE;
|
|
|
|
lastc = '\0';
|
|
|
|
/*
|
|
* Handle tab at the beginning of the line. A leading tab (shell
|
|
* command) 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 == EOF) {
|
|
if (ParsePopInput() == DONE) {
|
|
/* End of all inputs - return NULL */
|
|
return (NULL);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (c == '\t') {
|
|
ignComment = ignDepOp = TRUE;
|
|
lastc = c;
|
|
break;
|
|
}
|
|
if (c != '\n') {
|
|
ParseUnreadc(c);
|
|
break;
|
|
}
|
|
CURFILE->lineno++;
|
|
}
|
|
|
|
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...
|
|
*/
|
|
CURFILE->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 (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) {
|
|
/*
|
|
* 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;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
/*
|
|
* Copy in the previous character (there may be none if this
|
|
* was the first character) and save this one in
|
|
* lastc.
|
|
*/
|
|
if (lastc != '\0')
|
|
Buf_AddByte(buf, (Byte)lastc);
|
|
lastc = c;
|
|
}
|
|
line_read:
|
|
CURFILE->lineno++;
|
|
|
|
if (lastc != '\0') {
|
|
Buf_AddByte(buf, (Byte)lastc);
|
|
}
|
|
Buf_AddByte(buf, (Byte)'\0');
|
|
line = Buf_Peel(buf);
|
|
|
|
/*
|
|
* Strip trailing blanks and tabs from the line.
|
|
* Do not strip a blank or tab that is preceded 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] == '\0') {
|
|
/* empty line - just ignore */
|
|
free(line);
|
|
goto again;
|
|
}
|
|
|
|
return (line);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ParseFinishLine --
|
|
* Handle the end of a dependency group.
|
|
*
|
|
* Results:
|
|
* Nothing.
|
|
*
|
|
* Side Effects:
|
|
* inLine set FALSE. 'targets' list destroyed.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
ParseFinishLine(void)
|
|
{
|
|
const LstNode *ln;
|
|
|
|
if (inLine) {
|
|
LST_FOREACH(ln, &targets) {
|
|
if (((const GNode *)Lst_Datum(ln))->type & OP_TRANSFORM)
|
|
Suff_EndTransform(Lst_Datum(ln));
|
|
}
|
|
Lst_Destroy(&targets, ParseHasCommands);
|
|
inLine = FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xparse_include
|
|
* Parse an .include directive and push the file onto the input stack.
|
|
* 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
|
|
*/
|
|
static void
|
|
xparse_include(char *file, int sinclude)
|
|
{
|
|
char *fullname; /* full pathname of 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 */
|
|
char *prefEnd, *Fname;
|
|
char *newName;
|
|
|
|
/*
|
|
* 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 != endc; cp++) {
|
|
if (*cp == '\0') {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unclosed .include filename. '%c' expected", endc);
|
|
return;
|
|
}
|
|
}
|
|
*cp = '\0';
|
|
|
|
/*
|
|
* Substitute for any variables in the file name before trying to
|
|
* find the thing.
|
|
*/
|
|
file = Buf_Peel(Var_Subst(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 Path_FindFile to see if
|
|
* we can locate the beast.
|
|
*/
|
|
|
|
/* Make a temporary copy of this, to be safe. */
|
|
Fname = estrdup(CURFILE->fname);
|
|
|
|
prefEnd = strrchr(Fname, '/');
|
|
if (prefEnd != NULL) {
|
|
*prefEnd = '\0';
|
|
if (file[0] == '/')
|
|
newName = estrdup(file);
|
|
else
|
|
newName = str_concat(Fname, file, STR_ADDSLASH);
|
|
fullname = Path_FindFile(newName, &parseIncPath);
|
|
if (fullname == NULL) {
|
|
fullname = Path_FindFile(newName,
|
|
&dirSearchPath);
|
|
}
|
|
free(newName);
|
|
*prefEnd = '/';
|
|
} else {
|
|
fullname = NULL;
|
|
}
|
|
free(Fname);
|
|
if (fullname == NULL) {
|
|
/*
|
|
* Makefile wasn't found in same directory as included
|
|
* makefile. Search for it first on the -I search path,
|
|
* then on the .PATH search path, if not found in a -I
|
|
* directory.
|
|
* XXX: Suffix specific?
|
|
*/
|
|
fullname = Path_FindFile(file, &parseIncPath);
|
|
if (fullname == NULL) {
|
|
fullname = Path_FindFile(file, &dirSearchPath);
|
|
}
|
|
}
|
|
} else {
|
|
fullname = NULL;
|
|
}
|
|
|
|
if (fullname == NULL) {
|
|
/*
|
|
* System makefile or still haven't found the makefile.
|
|
* Look for it on the system path.
|
|
*/
|
|
fullname = Path_FindFile(file, &sysIncPath);
|
|
}
|
|
|
|
if (fullname == NULL) {
|
|
*cp = endc;
|
|
if (!sinclude)
|
|
Parse_Error(PARSE_FATAL, "Could not find %s", file);
|
|
else
|
|
Main_AddSourceMakefile(file);
|
|
free(file);
|
|
return;
|
|
}
|
|
Main_AddSourceMakefile(fullname);
|
|
free(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.
|
|
*/
|
|
ParsePushInput(fullname, NULL, NULL, 0);
|
|
DEBUGF(DIR, (".include %s\n", fullname));
|
|
}
|
|
|
|
static void
|
|
parse_include(char *file, int code __unused, int lineno __unused)
|
|
{
|
|
xparse_include(file, 0);
|
|
}
|
|
|
|
static void
|
|
parse_sinclude(char *file, int code __unused, int lineno __unused)
|
|
{
|
|
xparse_include(file, 1);
|
|
}
|
|
|
|
/**
|
|
* parse_message
|
|
* Parse a .warning or .error directive
|
|
*
|
|
* The input is the line minus the ".error"/".warning". We substitute
|
|
* variables, print the message and exit(1) (for .error) or just print
|
|
* a warning if the directive is malformed.
|
|
*/
|
|
static void
|
|
parse_message(char *line, int iserror, int lineno __unused)
|
|
{
|
|
|
|
if (!isspace((u_char)*line)) {
|
|
Parse_Error(PARSE_WARNING, "invalid syntax: .%s%s",
|
|
iserror ? "error" : "warning", line);
|
|
return;
|
|
}
|
|
|
|
while (isspace((u_char)*line))
|
|
line++;
|
|
|
|
line = Buf_Peel(Var_Subst(line, VAR_CMD, FALSE));
|
|
Parse_Error(iserror ? PARSE_FATAL : PARSE_WARNING, "%s", line);
|
|
free(line);
|
|
|
|
if (iserror) {
|
|
/* Terminate immediately. */
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* parse_undef
|
|
* Parse an .undef directive.
|
|
*/
|
|
static void
|
|
parse_undef(char *line, int code __unused, int lineno __unused)
|
|
{
|
|
char *cp;
|
|
|
|
while (isspace((u_char)*line))
|
|
line++;
|
|
|
|
for (cp = line; !isspace((u_char)*cp) && *cp != '\0'; cp++) {
|
|
;
|
|
}
|
|
*cp = '\0';
|
|
|
|
cp = Buf_Peel(Var_Subst(line, VAR_CMD, FALSE));
|
|
Var_Delete(cp, VAR_GLOBAL);
|
|
free(cp);
|
|
}
|
|
|
|
/**
|
|
* parse_for
|
|
* Parse a .for directive.
|
|
*/
|
|
static void
|
|
parse_for(char *line, int code __unused, int lineno)
|
|
{
|
|
|
|
if (!For_For(line)) {
|
|
/* syntax error */
|
|
return;
|
|
}
|
|
line = NULL;
|
|
|
|
/*
|
|
* Skip after the matching endfor.
|
|
*/
|
|
do {
|
|
free(line);
|
|
line = ParseSkipLine(0, 1);
|
|
if (line == NULL) {
|
|
Parse_Error(PARSE_FATAL,
|
|
"Unexpected end of file in for loop.\n");
|
|
return;
|
|
}
|
|
} while (For_Eval(line));
|
|
free(line);
|
|
|
|
/* execute */
|
|
For_Run(lineno);
|
|
}
|
|
|
|
/**
|
|
* parse_endfor
|
|
* Parse endfor. This may only happen if there was no matching .for.
|
|
*/
|
|
static void
|
|
parse_endfor(char *line __unused, int code __unused, int lineno __unused)
|
|
{
|
|
|
|
Parse_Error(PARSE_FATAL, "for-less endfor");
|
|
}
|
|
|
|
/**
|
|
* parse_directive
|
|
* Got a line starting with a '.'. Check if this is a directive
|
|
* and parse it.
|
|
*
|
|
* return:
|
|
* TRUE if line was a directive, FALSE otherwise.
|
|
*/
|
|
static Boolean
|
|
parse_directive(char *line)
|
|
{
|
|
char *start;
|
|
char *cp;
|
|
int dir;
|
|
|
|
/*
|
|
* Get the keyword:
|
|
* .[[:space:]]*\([[:alpha:]][[:alnum:]_]*\).*
|
|
* \1 is the keyword.
|
|
*/
|
|
for (start = line; isspace((u_char)*start); start++) {
|
|
;
|
|
}
|
|
|
|
if (!isalpha((u_char)*start)) {
|
|
return (FALSE);
|
|
}
|
|
|
|
cp = start + 1;
|
|
while (isalnum((u_char)*cp) || *cp == '_') {
|
|
cp++;
|
|
}
|
|
|
|
dir = directive_hash(start, cp - start);
|
|
if (dir < 0 || dir >= (int)NDIRECTS ||
|
|
(size_t)(cp - start) != strlen(directives[dir].name) ||
|
|
strncmp(start, directives[dir].name, cp - start) != 0) {
|
|
/* not actually matched */
|
|
return (FALSE);
|
|
}
|
|
|
|
if (!skipLine || directives[dir].skip_flag)
|
|
(*directives[dir].func)(cp, directives[dir].code,
|
|
CURFILE->lineno);
|
|
return (TRUE);
|
|
}
|
|
|
|
/*-
|
|
*---------------------------------------------------------------------
|
|
* 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(const char *name, FILE *stream)
|
|
{
|
|
char *cp; /* pointer into the line */
|
|
char *line; /* the line we're working on */
|
|
|
|
inLine = FALSE;
|
|
fatals = 0;
|
|
|
|
ParsePushInput(estrdup(name), stream, NULL, 0);
|
|
|
|
while ((line = ParseReadLine()) != NULL) {
|
|
if (*line == '.' && parse_directive(line + 1)) {
|
|
/* directive consumed */
|
|
goto nextLine;
|
|
}
|
|
if (skipLine || *line == '#') {
|
|
/* Skipping .if block or comment. */
|
|
goto nextLine;
|
|
}
|
|
|
|
if (*line == '\t') {
|
|
/*
|
|
* If a line starts with a tab, it can only
|
|
* hope to be a creation command.
|
|
*/
|
|
for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
|
|
continue;
|
|
}
|
|
if (*cp) {
|
|
if (inLine) {
|
|
LstNode *ln;
|
|
GNode *gn;
|
|
|
|
/*
|
|
* 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(ln, &targets) {
|
|
gn = Lst_Datum(ln);
|
|
|
|
/*
|
|
* if target already
|
|
* supplied, ignore
|
|
* commands
|
|
*/
|
|
if (!(gn->type & OP_HAS_COMMANDS))
|
|
Lst_AtEnd(&gn->commands, cp);
|
|
else
|
|
Parse_Error(PARSE_WARNING, "duplicate script "
|
|
"for target \"%s\" ignored", gn->name);
|
|
}
|
|
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. XXX this comment seems wrong.
|
|
*/
|
|
cp = line;
|
|
if (isspace((unsigned char)line[0])) {
|
|
while (*cp != '\0' &&
|
|
isspace((unsigned char)*cp)) {
|
|
cp++;
|
|
}
|
|
if (*cp == '\0') {
|
|
goto nextLine;
|
|
}
|
|
}
|
|
|
|
ParseFinishLine();
|
|
|
|
cp = Buf_Peel(Var_Subst(line, VAR_CMD, TRUE));
|
|
|
|
free(line);
|
|
line = cp;
|
|
|
|
/*
|
|
* Need a non-circular list for the target nodes
|
|
*/
|
|
Lst_Destroy(&targets, NOFREE);
|
|
inLine = TRUE;
|
|
|
|
ParseDoDependency(line);
|
|
}
|
|
|
|
nextLine:
|
|
free(line);
|
|
}
|
|
|
|
ParseFinishLine();
|
|
|
|
/*
|
|
* Make sure conditionals are clean
|
|
*/
|
|
Cond_End();
|
|
|
|
if (fatals)
|
|
errx(1, "fatal errors encountered -- cannot continue");
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* 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.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Parse_MainName(Lst *listmain)
|
|
{
|
|
|
|
if (mainNode == NULL) {
|
|
Punt("no target to make.");
|
|
/*NOTREACHED*/
|
|
} else if (mainNode->type & OP_DOUBLEDEP) {
|
|
Lst_AtEnd(listmain, mainNode);
|
|
Lst_Concat(listmain, &mainNode->cohorts, LST_CONCNEW);
|
|
} else
|
|
Lst_AtEnd(listmain, mainNode);
|
|
}
|