X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetopt.m4;h=caa5df43577febc5cf81fb073700c156f0efdd01;hb=41f9f674fd42e4a8a366eb4caba39f6a6c5f8cab;hp=d796148a5dac7339afcde459c3793f715eca7e0f;hpb=4a97623583fc994fe76b632c3e0a92a143366e8b;p=gnulib.git diff --git a/m4/getopt.m4 b/m4/getopt.m4 index d796148a5..caa5df435 100644 --- a/m4/getopt.m4 +++ b/m4/getopt.m4 @@ -1,53 +1,306 @@ -# getopt.m4 serial 5 -dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. -dnl This file is free software, distributed under the terms of the GNU -dnl General Public License. As a special exception to the GNU General -dnl Public License, this file may be distributed as part of a program -dnl that contains a configuration script generated by Autoconf, under -dnl the same distribution terms as the rest of that program. - -# The getopt module assume you want GNU getopt, with getopt_long etc, -# rather than vanilla POSIX getopt. This means your your code should -# always include for the getopt prototypes. - -AC_DEFUN([gl_GETOPT_SUBSTITUTE], +# getopt.m4 serial 29 +dnl Copyright (C) 2002-2006, 2008-2010 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], [ - GETOPT_H=getopt.h + m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX]) + AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) + gl_GETOPT_IFELSE([ + gl_REPLACE_GETOPT + ], + []) +]) + +# 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], +[ + m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU]) + + AC_REQUIRE([gl_FUNC_GETOPT_POSIX]) +]) + +# Request the gnulib implementation of the getopt functions unconditionally. +# argp.m4 uses this. +AC_DEFUN([gl_REPLACE_GETOPT], +[ + dnl Arrange for getopt.h to be created. + gl_GETOPT_SUBSTITUTE_HEADER + dnl Arrange for unistd.h to include getopt.h. + GNULIB_UNISTD_H_GETOPT=1 + dnl Arrange to compile the getopt implementation. AC_LIBOBJ([getopt]) AC_LIBOBJ([getopt1]) - AC_DEFINE([optarg], [rpl_optarg], - [Define to rpl_optarg if the replacement variable should be used.]) - AC_DEFINE([optind], [rpl_optind], - [Define to rpl_optind if the replacement variable should be used.]) - AC_DEFINE([opterr], [rpl_opterr], - [Define to rpl_opterr if the replacement variable should be used.]) - AC_DEFINE([optopt], [rpl_optopt], - [Define to rpl_optopt if the replacement variable should be used.]) - AC_DEFINE([getopt], [rpl_getopt], - [Define to rpl_getopt if the replacement function should be used.]) - AC_DEFINE([getopt_long], [rpl_getopt_long], - [Define to rpl_getopt_long if the replacement function should be used.]) - AC_DEFINE([getopt_long_only], [rpl_getopt_long_only], - [Define to rpl_getopt_long_only if the replacement function should be used.]) - AC_SUBST([GETOPT_H]) + gl_PREREQ_GETOPT ]) -AC_DEFUN([gl_GETOPT], +# emacs' configure.in uses this. +AC_DEFUN([gl_GETOPT_IFELSE], [ - gl_PREREQ_GETOPT + AC_REQUIRE([gl_GETOPT_CHECK_HEADERS]) + AS_IF([test -n "$gl_replace_getopt"], [$1], [$2]) +]) + +# Determine whether to replace the entire getopt facility. +AC_DEFUN([gl_GETOPT_CHECK_HEADERS], +[ + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + + dnl Persuade Solaris to declare optarg, optind, opterr, optopt. + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + gl_CHECK_NEXT_HEADERS([getopt.h]) + AC_CHECK_HEADERS_ONCE([getopt.h]) + if test $ac_cv_header_getopt_h = yes; then + HAVE_GETOPT_H=1 + else + HAVE_GETOPT_H=0 + fi + AC_SUBST([HAVE_GETOPT_H]) + + gl_replace_getopt= + + dnl Test whether is available. + if test -z "$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 $gl_getopt_required = GNU; then + AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes]) + fi + + dnl BSD getopt_long uses an incompatible method to reset option processing. + dnl Existence of the variable, in and of itself, is not a reason to replace + dnl getopt, but knowledge of the variable is needed to determine how to + dnl reset and whether a reset reparses the environment. + dnl Solaris supports neither optreset nor optind=0, but keeps no state that + dnl needs a reset beyond setting optind=1; detect Solaris by getopt_clip. + if test -z "$gl_replace_getopt"; then + AC_CHECK_DECLS([optreset], [], + [AC_CHECK_DECLS([getopt_clip], [], [], + [[#include ]]) + ], + [[#include ]]) + fi + + dnl mingw's getopt (in libmingwex.a) does weird things when the options + dnl strings starts with '+' and it's not the first call. Some internal state + dnl is left over from earlier calls, and neither setting optind = 0 nor + dnl setting optreset = 1 get rid of this internal state. + dnl POSIX is silent on optind vs. optreset, so we allow either behavior. + 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 This test fails on mingw and succeeds on many other platforms. + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include +#include +#include + +#if !HAVE_DECL_OPTRESET && !HAVE_DECL_GETOPT_CLIP +# define OPTIND_MIN 0 +#else +# define OPTIND_MIN 1 +#endif + +int +main () +{ + { + int argc = 0; + char *argv[10]; + int c; + + argv[argc++] = "program"; + argv[argc++] = "-a"; + argv[argc++] = "foo"; + argv[argc++] = "bar"; + argv[argc] = NULL; + optind = OPTIND_MIN; + opterr = 0; + + c = getopt (argc, argv, "ab"); + if (!(c == 'a')) + return 1; + c = getopt (argc, argv, "ab"); + if (!(c == -1)) + return 2; + if (!(optind == 2)) + return 3; + } + /* Some internal state exists at this point. */ + { + int argc = 0; + char *argv[10]; + int c; - GETOPT_H= - AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h]) - AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h]) + argv[argc++] = "program"; + argv[argc++] = "donald"; + argv[argc++] = "-p"; + argv[argc++] = "billy"; + argv[argc++] = "duck"; + argv[argc++] = "-a"; + argv[argc++] = "bar"; + argv[argc] = NULL; + optind = OPTIND_MIN; + opterr = 0; - dnl BSD getopt_long uses an incompatible method to reset option processing, - dnl and (as of 2004-10-15) mishandles optional option-arguments. - AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include ]) + c = getopt (argc, 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; + } + /* Detect MacOS 10.5, AIX 7.1 bug. */ + { + char *argv[3] = { "program", "-ab", NULL }; + optind = OPTIND_MIN; + opterr = 0; + 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; + } - if test -n "$GETOPT_H"; then - gl_GETOPT_SUBSTITUTE + return 0; +} +]])], + [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no], + [case "$host_os" in + mingw*) gl_cv_func_getopt_posix="guessing no";; + darwin* | aix*) gl_cv_func_getopt_posix="guessing no";; + *) gl_cv_func_getopt_posix="guessing yes";; + esac + ]) + ]) + case "$gl_cv_func_getopt_posix" in + *no) gl_replace_getopt=yes ;; + esac fi + + if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then + AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu], + [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the + # optstring is necessary for programs like m4 that have POSIX-mandated + # semantics for supporting options interspersed with files. + # Also, since getopt_long is a GNU extension, we require optind=0. + gl_had_POSIXLY_CORRECT=${POSIXLY_CORRECT:+yes} + POSIXLY_CORRECT=1 + export POSIXLY_CORRECT + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([[#include + #include + #include + ]], [[ + /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw, + and fails on MacOS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5, + OSF/1 5.1, Solaris 10. */ + { + char *myargv[3]; + myargv[0] = "conftest"; + myargv[1] = "-+"; + myargv[2] = 0; + opterr = 0; + if (getopt (2, myargv, "+a") != '?') + return 1; + } + /* This code succeeds on glibc 2.8, mingw, + and fails on MacOS 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. */ + { + char *argv[] = { "program", "-p", "foo", "bar", NULL }; + + optind = 1; + if (getopt (4, argv, "p::") != 'p') + return 2; + if (optarg != NULL) + return 3; + if (getopt (4, argv, "p::") != -1) + return 4; + if (optind != 2) + return 5; + } + /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */ + { + char *argv[] = { "program", "foo", "-p", NULL }; + optind = 0; + if (getopt (3, argv, "-p") != 1) + return 6; + if (getopt (3, argv, "-p") != 'p') + return 7; + } + /* This code fails on glibc 2.11. */ + { + char *argv[] = { "program", "-b", "-a", NULL }; + optind = opterr = 0; + if (getopt (3, argv, "+:a:b") != 'b') + return 8; + if (getopt (3, argv, "+:a:b") != ':') + return 9; + } + return 0; + ]])], + [gl_cv_func_getopt_gnu=yes], + [gl_cv_func_getopt_gnu=no], + [dnl Cross compiling. Guess based on host and declarations. + case $host_os:$ac_cv_have_decl_optreset in + *-gnu*:* | mingw*:*) gl_cv_func_getopt_gnu=no;; + *:yes) gl_cv_func_getopt_gnu=no;; + *) gl_cv_func_getopt_gnu=yes;; + esac + ]) + if test "$gl_had_POSIXLY_CORRECT" != yes; then + AS_UNSET([POSIXLY_CORRECT]) + fi + ]) + if test "$gl_cv_func_getopt_gnu" = "no"; then + gl_replace_getopt=yes + fi + fi +]) + +# emacs' configure.in uses this. +AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER], +[ + GETOPT_H=getopt.h + AC_DEFINE([__GETOPT_PREFIX], [[rpl_]], + [Define to rpl_ if the getopt replacement functions and variables + should be used.]) + AC_SUBST([GETOPT_H]) ]) # Prerequisites of lib/getopt*. -AC_DEFUN([gl_PREREQ_GETOPT], [:]) +# emacs' configure.in uses this. +AC_DEFUN([gl_PREREQ_GETOPT], +[ + AC_CHECK_DECLS_ONCE([getenv]) +])