# getopt.m4 serial 44
dnl Copyright (C) 2002-2006, 2008-2012 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],
[
m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU])
AC_REQUIRE([gl_FUNC_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],
[
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],
[
AC_CHECK_DECLS_ONCE([getenv])
])