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Diffstat (limited to 'gnulib/m4/argz.m4')
| -rw-r--r-- | gnulib/m4/argz.m4 | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gnulib/m4/argz.m4 b/gnulib/m4/argz.m4 new file mode 100644 index 0000000..e9d790d --- /dev/null +++ b/gnulib/m4/argz.m4 @@ -0,0 +1,80 @@ +# Portability macros for glibc argz. -*- Autoconf -*- +# +# Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# Written by Gary V. Vaughan <gary@gnu.org> +# +# This file is free software; the Free Software Foundation gives +# unlimited permission to copy and/or distribute it, with or without +# modifications, as long as this notice is preserved. + +# serial 6 argz.m4 + +AC_DEFUN([gl_FUNC_ARGZ], +[gl_PREREQ_ARGZ + +AC_REQUIRE([AC_C_RESTRICT]) + +AC_CHECK_HEADERS([argz.h], [], [], [AC_INCLUDES_DEFAULT]) + +AC_CHECK_TYPES([error_t], + [], + [AC_DEFINE([error_t], [int], + [Define to a type to use for `error_t' if it is not otherwise available.]) + AC_DEFINE([__error_t_defined], [1], [Define so that glibc/gnulib argp.h + does not typedef error_t.])], + [#if defined(HAVE_ARGZ_H) +# include <argz.h> +#endif]) + +ARGZ_H= +AC_CHECK_FUNC([argz_replace], [], [ARGZ_H=argz.h; AC_LIBOBJ([argz])]) + +dnl if have system argz functions, allow forced use of +dnl libltdl-supplied implementation (and default to do so +dnl on "known bad" systems). Could use a runtime check, but +dnl (a) detecting malloc issues is notoriously unreliable +dnl (b) only known system that declares argz functions, +dnl provides them, yet they are broken, is cygwin +dnl releases prior to 5-May-2007 (1.5.24 and earlier) +dnl So, it's more straightforward simply to special case +dnl this for known bad systems. +AS_IF([test -z "$ARGZ_H"], + [AC_CACHE_CHECK( + [if argz actually works], + [lt_cv_sys_argz_works], + [[case $host_os in #( + *cygwin*) + lt_cv_sys_argz_works=no + if test "$cross_compiling" != no; then + lt_cv_sys_argz_works="guessing no" + else + lt_sed_extract_leading_digits='s/^\([0-9\.]*\).*/\1/' + save_IFS=$IFS + IFS=-. + set x `uname -r | sed -e "$lt_sed_extract_leading_digits"` + IFS=$save_IFS + lt_os_major=${2-0} + lt_os_minor=${3-0} + lt_os_micro=${4-0} + if test "$lt_os_major" -gt 1 \ + || { test "$lt_os_major" -eq 1 \ + && { test "$lt_os_minor" -gt 5 \ + || { test "$lt_os_minor" -eq 5 \ + && test "$lt_os_micro" -gt 24; }; }; }; then + lt_cv_sys_argz_works=yes + fi + fi + ;; #( + *) lt_cv_sys_argz_works=yes ;; + esac]]) + AS_IF([test $lt_cv_sys_argz_works = yes], + [AC_DEFINE([HAVE_WORKING_ARGZ], 1, + [This value is set to 1 to indicate that the system argz facility works])], + [ARGZ_H=argz.h + AC_LIBOBJ([argz])])]) + +AC_SUBST([ARGZ_H]) +]) + +# Prerequisites of lib/argz.c. +AC_DEFUN([gl_PREREQ_ARGZ], [:]) |