Mercurial > gnulib
view m4/getopt.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
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# getopt.m4 serial 46 dnl Copyright (C) 2002-2006, 2008-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Request a POSIX compliant getopt function. AC_DEFUN([gl_FUNC_GETOPT_POSIX], [ m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX]) AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_GETOPT_CHECK_HEADERS]) dnl Other modules can request the gnulib implementation of the getopt dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS. dnl argp.m4 does this. m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [ REPLACE_GETOPT=1 ], [ REPLACE_GETOPT=0 if test -n "$gl_replace_getopt"; then REPLACE_GETOPT=1 fi ]) if test $REPLACE_GETOPT = 1; then dnl Arrange for getopt.h to be created. gl_GETOPT_SUBSTITUTE_HEADER fi ]) # Request a POSIX compliant getopt function with GNU extensions (such as # options with optional arguments) and the functions getopt_long, # getopt_long_only. AC_DEFUN([gl_FUNC_GETOPT_GNU], [ dnl Set the variable gl_getopt_required, so that all invocations of dnl gl_GETOPT_CHECK_HEADERS in the scope of the current configure file dnl will check for getopt with GNU extensions. dnl This means that if one gnulib-tool invocation requests getopt-posix dnl and another gnulib-tool invocation requests getopt-gnu, it is as if dnl both had requested getopt-gnu. m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU]) dnl No need to invoke gl_FUNC_GETOPT_POSIX here; this is automatically dnl done through the module dependency getopt-gnu -> getopt-posix. ]) # Determine whether to replace the entire getopt facility. AC_DEFUN([gl_GETOPT_CHECK_HEADERS], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([AC_PROG_AWK]) dnl for awk that supports ENVIRON dnl Persuade Solaris <unistd.h> to declare optarg, optind, opterr, optopt. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) gl_CHECK_NEXT_HEADERS([getopt.h]) if test $ac_cv_header_getopt_h = yes; then HAVE_GETOPT_H=1 else HAVE_GETOPT_H=0 fi AC_SUBST([HAVE_GETOPT_H]) gl_replace_getopt= dnl Test whether <getopt.h> is available. if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes]) fi dnl Test whether the function getopt_long is available. if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes]) fi dnl POSIX 2008 does not specify leading '+' behavior, but see dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on dnl the next version of POSIX. For now, we only guarantee leading '+' dnl behavior with getopt-gnu. if test -z "$gl_replace_getopt"; then AC_CACHE_CHECK([whether getopt is POSIX compatible], [gl_cv_func_getopt_posix], [ dnl Merging these three different test programs into a single one dnl would require a reset mechanism. On BSD systems, it can be done dnl through 'optreset'; on some others (glibc), it can be done by dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1, dnl Solaris 9, musl libc), there is no such mechanism. if test $cross_compiling = no; then dnl Sanity check. Succeeds everywhere (except on MSVC, dnl which lacks <unistd.h> and getopt() entirely). AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <unistd.h> #include <stdlib.h> #include <string.h> int main () { static char program[] = "program"; static char a[] = "-a"; static char foo[] = "foo"; static char bar[] = "bar"; char *argv[] = { program, a, foo, bar, NULL }; int c; c = getopt (4, argv, "ab"); if (!(c == 'a')) return 1; c = getopt (4, argv, "ab"); if (!(c == -1)) return 2; if (!(optind == 2)) return 3; return 0; } ]])], [gl_cv_func_getopt_posix=maybe], [gl_cv_func_getopt_posix=no]) if test $gl_cv_func_getopt_posix = maybe; then dnl Sanity check with '+'. Succeeds everywhere (except on MSVC, dnl which lacks <unistd.h> and getopt() entirely). AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <unistd.h> #include <stdlib.h> #include <string.h> int main () { static char program[] = "program"; static char donald[] = "donald"; static char p[] = "-p"; static char billy[] = "billy"; static char duck[] = "duck"; static char a[] = "-a"; static char bar[] = "bar"; char *argv[] = { program, donald, p, billy, duck, a, bar, NULL }; int c; c = getopt (7, argv, "+abp:q:"); if (!(c == -1)) return 4; if (!(strcmp (argv[0], "program") == 0)) return 5; if (!(strcmp (argv[1], "donald") == 0)) return 6; if (!(strcmp (argv[2], "-p") == 0)) return 7; if (!(strcmp (argv[3], "billy") == 0)) return 8; if (!(strcmp (argv[4], "duck") == 0)) return 9; if (!(strcmp (argv[5], "-a") == 0)) return 10; if (!(strcmp (argv[6], "bar") == 0)) return 11; if (!(optind == 1)) return 12; return 0; } ]])], [gl_cv_func_getopt_posix=maybe], [gl_cv_func_getopt_posix=no]) fi if test $gl_cv_func_getopt_posix = maybe; then dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug. AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include <unistd.h> #include <stdlib.h> #include <string.h> int main () { static char program[] = "program"; static char ab[] = "-ab"; char *argv[3] = { program, ab, NULL }; if (getopt (2, argv, "ab:") != 'a') return 13; if (getopt (2, argv, "ab:") != '?') return 14; if (optopt != 'b') return 15; if (optind != 2) return 16; return 0; } ]])], [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no]) fi else case "$host_os" in darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";; *) gl_cv_func_getopt_posix="guessing yes";; esac fi ]) case "$gl_cv_func_getopt_posix" in *no) gl_replace_getopt=yes ;; esac fi if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu], [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the # optstring is necessary for programs like m4 that have POSIX-mandated # semantics for supporting options interspersed with files. # Also, since getopt_long is a GNU extension, we require optind=0. # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT; # so take care to revert to the correct (non-)export state. dnl GNU Coding Standards currently allow awk but not env; besides, env dnl is ambiguous with environment values that contain newlines. gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }' case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in xx) gl_had_POSIXLY_CORRECT=exported ;; x) gl_had_POSIXLY_CORRECT=yes ;; *) gl_had_POSIXLY_CORRECT= ;; esac POSIXLY_CORRECT=1 export POSIXLY_CORRECT AC_RUN_IFELSE( [AC_LANG_PROGRAM([[#include <getopt.h> #include <stddef.h> #include <string.h> ]GL_NOCRASH[ ]], [[ int result = 0; nocrash_init(); /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw, and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10. */ { static char conftest[] = "conftest"; static char plus[] = "-+"; char *argv[3] = { conftest, plus, NULL }; opterr = 0; if (getopt (2, argv, "+a") != '?') result |= 1; } /* This code succeeds on glibc 2.8, mingw, and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x. */ { static char program[] = "program"; static char p[] = "-p"; static char foo[] = "foo"; static char bar[] = "bar"; char *argv[] = { program, p, foo, bar, NULL }; optind = 1; if (getopt (4, argv, "p::") != 'p') result |= 2; else if (optarg != NULL) result |= 4; else if (getopt (4, argv, "p::") != -1) result |= 6; else if (optind != 2) result |= 8; } /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */ { static char program[] = "program"; static char foo[] = "foo"; static char p[] = "-p"; char *argv[] = { program, foo, p, NULL }; optind = 0; if (getopt (3, argv, "-p") != 1) result |= 16; else if (getopt (3, argv, "-p") != 'p') result |= 16; } /* This code fails on glibc 2.11. */ { static char program[] = "program"; static char b[] = "-b"; static char a[] = "-a"; char *argv[] = { program, b, a, NULL }; optind = opterr = 0; if (getopt (3, argv, "+:a:b") != 'b') result |= 32; else if (getopt (3, argv, "+:a:b") != ':') result |= 32; } /* This code dumps core on glibc 2.14. */ { static char program[] = "program"; static char w[] = "-W"; static char dummy[] = "dummy"; char *argv[] = { program, w, dummy, NULL }; optind = opterr = 1; if (getopt (3, argv, "W;") != 'W') result |= 64; } return result; ]])], [gl_cv_func_getopt_gnu=yes], [gl_cv_func_getopt_gnu=no], [dnl Cross compiling. Assume the worst, even on glibc platforms. gl_cv_func_getopt_gnu="guessing no" ]) case $gl_had_POSIXLY_CORRECT in exported) ;; yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;; *) AS_UNSET([POSIXLY_CORRECT]) ;; esac ]) if test "$gl_cv_func_getopt_gnu" != yes; then gl_replace_getopt=yes else AC_CACHE_CHECK([for working GNU getopt_long function], [gl_cv_func_getopt_long_gnu], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <getopt.h> #include <stddef.h> #include <string.h> ]], [[static const struct option long_options[] = { { "xtremely-",no_argument, NULL, 1003 }, { "xtra", no_argument, NULL, 1001 }, { "xtreme", no_argument, NULL, 1002 }, { "xtremely", no_argument, NULL, 1003 }, { NULL, 0, NULL, 0 } }; /* This code fails on OpenBSD 5.0. */ { static char program[] = "program"; static char xtremel[] = "--xtremel"; char *argv[] = { program, xtremel, NULL }; int option_index; optind = 1; opterr = 0; if (getopt_long (2, argv, "", long_options, &option_index) != 1003) return 1; } return 0; ]])], [gl_cv_func_getopt_long_gnu=yes], [gl_cv_func_getopt_long_gnu=no], [dnl Cross compiling. Guess no on OpenBSD, yes otherwise. case "$host_os" in openbsd*) gl_cv_func_getopt_long_gnu="guessing no";; *) gl_cv_func_getopt_long_gnu="guessing yes";; esac ]) ]) case "$gl_cv_func_getopt_long_gnu" in *yes) ;; *) gl_replace_getopt=yes ;; esac fi fi ]) AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER], [ AC_CHECK_HEADERS_ONCE([sys/cdefs.h]) if test $ac_cv_header_sys_cdefs_h = yes; then HAVE_SYS_CDEFS_H=1 else HAVE_SYS_CDEFS_H=0 fi AC_SUBST([HAVE_SYS_CDEFS_H]) AC_DEFINE([__GETOPT_PREFIX], [[rpl_]], [Define to rpl_ if the getopt replacement functions and variables should be used.]) GETOPT_H=getopt.h GETOPT_CDEFS_H=getopt-cdefs.h AC_SUBST([GETOPT_H]) AC_SUBST([GETOPT_CDEFS_H]) ])