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Enhancements to the documentation (fixes bugs #1772 and 4898).

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Add "!" to the list of shell escape characters: POSIX sh allows it to be
used to negate the return value of the command.
This commit is contained in:
Paul Smith 2004-01-08 03:17:08 +00:00
parent a35db90275
commit 2b3ee46f4e
4 changed files with 39 additions and 18 deletions
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7
ChangeLog
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@ -1,5 +1,12 @@
2004-01-07 Paul D. Smith <psmith@gnu.org>
* doc/make.texi (Target-specific): Fix Savannah bug #1772.
(MAKE Variable): Fix Savannah bug #4898.
* job.c (construct_command_argv_internal): Add "!" to the list of
shell escape chars. POSIX sh allows it to appear before a
command, to negate the exit code. Fixes bug #6404.
* implicit.c (pattern_search): When matching an implicit rule,
remember which dependencies have the ignore_mtime flag set.
Original fix provided in Savannah patch #2349, by Benoit

35
doc/make.texi
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@ -38,7 +38,8 @@ and issues the commands to recompile them.
This is Edition @value{EDITION}, last updated @value{UPDATED},
of @cite{The GNU Make Manual}, for @code{make}, Version @value{VERSION}.
Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003
Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2002, 2003, 2004
Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document
@ -57,11 +58,11 @@ Texts. A copy of the license is included in the section entitled
@subtitle A Program for Directing Recompilation
@subtitle GNU @code{make} Version @value{VERSION}
@subtitle @value{UPDATE-MONTH}
@author Richard M. Stallman, Roland McGrath, Paul Smith
@author Richard M. Stallman, Roland McGrath, Paul D. Smith
@page
@vskip 0pt plus 1filll
Copyright @copyright{} 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
1996, 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
@sp 2
Published by the Free Software Foundation @*
59 Temple Place -- Suite 330, @*
@ -350,7 +351,7 @@ The @code{make} utility automatically determines which pieces of a large
program need to be recompiled, and issues commands to recompile them.
This manual describes GNU @code{make}, which was implemented by Richard
Stallman and Roland McGrath. Development since Version 3.76 has been
handled by Paul Smith.
handled by Paul D. Smith.
GNU @code{make} conforms to section 6.2 of @cite{IEEE Standard
1003.2-1992} (POSIX.2).
@ -3675,7 +3676,11 @@ a rule alters the effects of the @samp{-t} (@samp{--touch}), @samp{-n}
(@samp{--just-print}), or @samp{-q} (@w{@samp{--question}}) option.
Using the @code{MAKE} variable has the same effect as using a @samp{+}
character at the beginning of the command line. @xref{Instead of
Execution, ,Instead of Executing the Commands}.@refill
Execution, ,Instead of Executing the Commands}. This special feature
is only enabled if the @code{MAKE} variable appears directly in the
command script: it does not apply if the @code{MAKE} variable is
referenced through expansion of another variable. In the latter case
you must use the @samp{+} token to get these special effects.@refill
Consider the command @samp{make -t} in the above example. (The
@samp{-t} option marks targets as up to date without actually running
@ -5225,10 +5230,11 @@ environment if the @samp{-e} option is in force) will take precedence.
Specifying the @code{override} directive will allow the target-specific
variable value to be preferred.
There is one more special feature of target-specific variables: when you
define a target-specific variable, that variable value is also in effect
for all prerequisites of this target (unless those prerequisites override
it with their own target-specific variable value). So, for example, a
There is one more special feature of target-specific variables: when
you define a target-specific variable that variable value is also in
effect for all prerequisites of this target, and all their
prerequisites, etc. (unless those prerequisites override that variable
with their own target-specific variable value). So, for example, a
statement like this:
@example
@ -5240,7 +5246,16 @@ prog : prog.o foo.o bar.o
will set @code{CFLAGS} to @samp{-g} in the command script for
@file{prog}, but it will also set @code{CFLAGS} to @samp{-g} in the
command scripts that create @file{prog.o}, @file{foo.o}, and
@file{bar.o}, and any command scripts which create their prerequisites.
@file{bar.o}, and any command scripts which create their
prerequisites.
Be aware that a given prerequisite will only be built once per
invocation of make, at most. If the same file is a prerequisite of
multiple targets, and each of those targets has a different value for
the same target-specific variable, then the first target to be built
will cause that prerequisite to be built and the prerequisite will
inherit the target-specific value from the first target. It will
ignore the target-specific values from any other targets.
@node Pattern-specific, , Target-specific, Using Variables
@section Pattern-specific Variable Values

2
implicit.c
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@ -103,7 +103,7 @@ pattern_search (struct file *file, int archive,
/* This buffer records all the dependencies actually found for a rule. */
char **found_files = (char **) alloca (max_pattern_deps * sizeof (char *));
/* This list notes if the associated dep has an "ignore_mtime" flag set. */
/* Remember whether the associated dep has an "ignore_mtime" flag set. */
unsigned char *found_files_im = (unsigned char *) alloca (max_pattern_deps * sizeof (unsigned char));
/* Number of dep names now in FOUND_FILES. */
unsigned int deps_found = 0;

13
job.c
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@ -358,13 +358,12 @@ vms_redirect (struct dsc$descriptor_s *desc, char *fname, char *ibuf)
}
/*
found apostrophe at (p-1)
inc p until after closing apostrophe. */
/* found apostrophe at (p-1)
inc p until after closing apostrophe.
*/
static char *
handle_apos (char *p)
vms_handle_apos (char *p)
{
int alast;
int inside;
@ -2160,7 +2159,7 @@ child_execute_job (char *argv, struct child *child)
/* Nice places for line breaks are after strings, after
comma or space and before slash. */
case '"':
q = handle_apos (q + 1);
q = vms_handle_apos (q + 1);
sep = q;
break;
case ',':
@ -2695,7 +2694,7 @@ construct_command_argv_internal (char *line, char **restp, char *shell,
char* sh_chars;
char** sh_cmds;
#else /* must be UNIX-ish */
static char sh_chars[] = "#;\"*?[]&|<>(){}$`^~";
static char sh_chars[] = "#;\"*?[]&|<>(){}$`^~!";
static char *sh_cmds[] = { "cd", "eval", "exec", "exit", "login",
"logout", "set", "umask", "wait", "while", "for",
"case", "if", ":", ".", "break", "continue",