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11095a90f1
I decided this feature was too impacting to make the permanent default behavior. This set of changes makes the default behavior of make the old behavior (no second expansion). If you want second expansion, you must define the .SECONDEXPANSION: special target before the first target that needs it. This set of changes ONLY fixes explicit and static pattern rules to work like this. Implicit rules still have second expansion enabled all the time: I'll work on that next. Note that there is still a backward-incompatibility: now to get the old SysV behavior using $$@ etc. in the prerequisites list you need to set .SECONDEXPANSION: as well.
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/* Definitions of dependency data structures for GNU Make.
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Copyright (C) 1988, 1989, 1991, 1992, 1993, 1996 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Make is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Make; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Flag bits for the second argument to `read_makefile'.
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These flags are saved in the `changed' field of each
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`struct dep' in the chain returned by `read_all_makefiles'. */
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#define RM_NO_DEFAULT_GOAL (1 << 0) /* Do not set default goal. */
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#define RM_INCLUDED (1 << 1) /* Search makefile search path. */
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#define RM_DONTCARE (1 << 2) /* No error if it doesn't exist. */
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#define RM_NO_TILDE (1 << 3) /* Don't expand ~ in file name. */
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#define RM_NOFLAG 0
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/* Structure representing one dependency of a file.
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Each struct file's `deps' points to a chain of these,
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chained through the `next'.
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Note that the first two words of this match a struct nameseq. */
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struct dep
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{
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struct dep *next;
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char *name;
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struct file *file;
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unsigned int changed : 8;
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unsigned int ignore_mtime : 1;
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unsigned int staticpattern : 1;
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unsigned int need_2nd_expansion : 1;
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};
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/* Structure used in chains of names, for parsing and globbing. */
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struct nameseq
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{
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struct nameseq *next;
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char *name;
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};
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extern struct nameseq *multi_glob PARAMS ((struct nameseq *chain, unsigned int size));
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#ifdef VMS
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extern struct nameseq *parse_file_seq ();
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#else
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extern struct nameseq *parse_file_seq PARAMS ((char **stringp, int stopchar, unsigned int size, int strip));
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#endif
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extern char *tilde_expand PARAMS ((char *name));
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#ifndef NO_ARCHIVES
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extern struct nameseq *ar_glob PARAMS ((char *arname, char *member_pattern, unsigned int size));
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#endif
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#ifndef iAPX286
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#define dep_name(d) ((d)->name == 0 ? (d)->file->name : (d)->name)
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#else
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/* Buggy compiler can't hack this. */
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extern char *dep_name ();
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#endif
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extern struct dep *copy_dep_chain PARAMS ((const struct dep *d));
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extern void free_dep_chain PARAMS ((struct dep *d));
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extern void free_ns_chain PARAMS ((struct nameseq *n));
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extern struct dep *read_all_makefiles PARAMS ((char **makefiles));
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extern int eval_buffer PARAMS ((char *buffer));
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extern int update_goal_chain PARAMS ((struct dep *goals));
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extern void uniquize_deps PARAMS ((struct dep *));
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