X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetopt.m4;h=8ec6e794532fa36915573a642424fd3591655d95;hb=a4ed524753cd61bd2c52b9af041eabe83ea1d503;hp=793ab789ded222bfae269676d63664de612380ef;hpb=d60f3b0c6b0f93a601acd1cfd3923f94ca05abb0;p=gnulib.git diff --git a/m4/getopt.m4 b/m4/getopt.m4 index 793ab789d..8ec6e7945 100644 --- a/m4/getopt.m4 +++ b/m4/getopt.m4 @@ -1,4 +1,4 @@ -# getopt.m4 serial 32 +# getopt.m4 serial 39 dnl Copyright (C) 2002-2006, 2008-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -9,10 +9,23 @@ AC_DEFUN([gl_FUNC_GETOPT_POSIX], [ m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX]) AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - gl_GETOPT_IFELSE([ - gl_REPLACE_GETOPT - ], - []) + 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], [ + gl_GETOPT_IFELSE([], []) + REPLACE_GETOPT=1 + ], [ + REPLACE_GETOPT=0 + gl_GETOPT_IFELSE([ + REPLACE_GETOPT=1 + ], + []) + ]) + 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 @@ -25,20 +38,6 @@ AC_DEFUN([gl_FUNC_GETOPT_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]) - gl_PREREQ_GETOPT -]) - # emacs' configure.in uses this. AC_DEFUN([gl_GETOPT_IFELSE], [ @@ -56,7 +55,6 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS], AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) gl_CHECK_NEXT_HEADERS([getopt.h]) - AC_CHECK_HEADERS_ONCE([getopt.h]) if test $ac_cv_header_getopt_h = yes; then HAVE_GETOPT_H=1 else @@ -76,20 +74,6 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS], AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes]) fi - dnl BSD getopt_long uses an incompatible method to reset option processing. - dnl Existence of the variable, in and of itself, is not a reason to replace - dnl getopt, but knowledge of the variable is needed to determine how to - dnl reset and whether a reset reparses the environment. - dnl Solaris supports neither optreset nor optind=0, but keeps no state that - dnl needs a reset beyond setting optind=1; detect Solaris by getopt_clip. - if test -z "$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 @@ -103,38 +87,52 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS], AC_CACHE_CHECK([whether getopt is POSIX compatible], [gl_cv_func_getopt_posix], [ + dnl BSD getopt_long uses an incompatible method to reset option + dnl processing. Existence of the optreset variable, in and of + dnl itself, is not a reason to replace getopt, but knowledge + dnl of the variable is needed to determine how to reset and + dnl whether a reset reparses the environment. Solaris + dnl supports neither optreset nor optind=0, but keeps no state + dnl that needs a reset beyond setting optind=1; detect Solaris + dnl by getopt_clip. + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include ]], + [[int *p = &optreset; return optreset;]])], + [gl_optind_min=1], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include ]], + [[return !getopt_clip;]])], + [gl_optind_min=1], + [gl_optind_min=0])]) + dnl This test fails on mingw and succeeds on many other platforms. + gl_save_CPPFLAGS=$CPPFLAGS + CPPFLAGS="$CPPFLAGS -DOPTIND_MIN=$gl_optind_min" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include -#if !HAVE_DECL_OPTRESET && !HAVE_DECL_GETOPT_CLIP -# define OPTIND_MIN 0 -#else -# define OPTIND_MIN 1 -#endif - int main () { { - int argc = 0; - char *argv[10]; + static char program[] = "program"; + static char a[] = "-a"; + static char foo[] = "foo"; + static char bar[] = "bar"; + char *argv[] = { program, a, foo, bar, NULL }; int c; - argv[argc++] = "program"; - argv[argc++] = "-a"; - argv[argc++] = "foo"; - argv[argc++] = "bar"; - argv[argc] = NULL; optind = OPTIND_MIN; opterr = 0; - c = getopt (argc, argv, "ab"); + c = getopt (4, argv, "ab"); if (!(c == 'a')) return 1; - c = getopt (argc, argv, "ab"); + c = getopt (4, argv, "ab"); if (!(c == -1)) return 2; if (!(optind == 2)) @@ -142,22 +140,20 @@ main () } /* Some internal state exists at this point. */ { - int argc = 0; - char *argv[10]; + static char program[] = "program"; + static char donald[] = "donald"; + static char p[] = "-p"; + static char billy[] = "billy"; + static char duck[] = "duck"; + static char a[] = "-a"; + static char bar[] = "bar"; + char *argv[] = { program, donald, p, billy, duck, a, bar, NULL }; int c; - argv[argc++] = "program"; - argv[argc++] = "donald"; - argv[argc++] = "-p"; - argv[argc++] = "billy"; - argv[argc++] = "duck"; - argv[argc++] = "-a"; - argv[argc++] = "bar"; - argv[argc] = NULL; optind = OPTIND_MIN; opterr = 0; - c = getopt (argc, argv, "+abp:q:"); + c = getopt (7, argv, "+abp:q:"); if (!(c == -1)) return 4; if (!(strcmp (argv[0], "program") == 0)) @@ -179,7 +175,9 @@ main () } /* Detect MacOS 10.5, AIX 7.1 bug. */ { - char *argv[3] = { "program", "-ab", NULL }; + static char program[] = "program"; + static char ab[] = "-ab"; + char *argv[3] = { program, ab, NULL }; optind = OPTIND_MIN; opterr = 0; if (getopt (2, argv, "ab:") != 'a') @@ -202,6 +200,7 @@ main () *) gl_cv_func_getopt_posix="guessing yes";; esac ]) + CPPFLAGS=$gl_save_CPPFLAGS ]) case "$gl_cv_func_getopt_posix" in *no) gl_replace_getopt=yes ;; @@ -230,25 +229,32 @@ dnl is ambiguous with environment values that contain newlines. [AC_LANG_PROGRAM([[#include #include #include + ]GL_NOCRASH[ ]], [[ int result = 0; + + nocrash_init(); + /* 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; + static char conftest[] = "conftest"; + static char plus[] = "-+"; + char *argv[3] = { conftest, plus, NULL }; opterr = 0; - if (getopt (2, myargv, "+a") != '?') + if (getopt (2, argv, "+a") != '?') result |= 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 }; + 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') @@ -262,7 +268,10 @@ dnl is ambiguous with environment values that contain newlines. } /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */ { - char *argv[] = { "program", "foo", "-p", NULL }; + 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; @@ -271,13 +280,26 @@ dnl is ambiguous with environment values that contain newlines. } /* This code fails on glibc 2.11. */ { - char *argv[] = { "program", "-b", "-a", NULL }; + 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 |= 64; else if (getopt (3, argv, "+:a:b") != ':') result |= 64; } + /* 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 |= 128; + } return result; ]])], [gl_cv_func_getopt_gnu=yes],