-#serial 27
+#serial 31
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
# Software Foundation, Inc.
dnl Initially derived from code in GNU grep.
dnl Mostly written by Jim Meyering.
+AC_PREREQ([2.50])
+
AC_DEFUN([gl_REGEX],
[
+ AC_REQUIRE([AC_SYS_LARGEFILE]) dnl for a sufficently-wide off_t
+
+ AC_CACHE_CHECK([whether off_t can be used in a switch statement],
+ [gl_cv_type_off_t_switch],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT],
+ [[off_t o = -1;
+ switch (o)
+ {
+ case -2:
+ return 1;
+ case -1:
+ return 2;
+ default:
+ return 0;
+ }
+ ]])],
+ [gl_cv_type_off_t_switch=yes],
+ [gl_cv_type_off_t_switch=no])])
+ if test $gl_cv_type_off_t_switch = yes; then
+ AC_DEFINE([_REGEX_LARGE_OFFSETS], 1,
+ [Define if you want regoff_t to be at least as wide POSIX requires.])
+ fi
+
AC_LIBSOURCES(
[regcomp.c, regex.c, regex.h,
regex_internal.c, regex_internal.h, regexec.c])
- dnl Even packages that don't use regex.c can use this macro.
- dnl Of course, for them it doesn't do anything.
-
- # Assume we'll default to using the included regex.c.
- ac_use_included_regex=yes
-
- # However, if the system regex support is good enough that it passes the
- # the following run test, then default to *not* using the included regex.c.
- # If cross compiling, assume the test would fail and use the included
- # regex.c. The first failing regular expression is from `Spencer ere
- # test #75' in grep-2.3.
- AC_CACHE_CHECK([for working re_compile_pattern],
- [gl_cv_func_working_re_compile_pattern],
- [AC_RUN_IFELSE(
- [AC_LANG_PROGRAM(
+ AC_ARG_WITH([included-regex],
+ [AC_HELP_STRING([--without-included-regex],
+ [don't compile regex; this is the default on
+ systems with recent-enough versions of the GNU C
+ Library (use with caution on other systems)])])
+
+ case $with_included_regex in
+ yes|no) ac_use_included_regex=$with_included_regex
+ ;;
+ '')
+ # If the system regex support is good enough that it passes the the
+ # following run test, then default to *not* using the included regex.c.
+ # If cross compiling, assume the test would fail and use the included
+ # regex.c. The first failing regular expression is from `Spencer ere
+ # test #75' in grep-2.3.
+ AC_CACHE_CHECK([for working re_compile_pattern],
+ [gl_cv_func_re_compile_pattern_broken],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
[AC_INCLUDES_DEFAULT
#include <regex.h>],
[[static struct re_pattern_buffer regex;
if (! REG_STARTEND)
exit (1);
+ /* Reject hosts whose regoff_t values are too narrow.
+ These include glibc 2.3.5 on hosts with 64-bit off_t
+ and 32-bit int, and Solaris 10 on hosts with 32-bit int
+ and _FILE_OFFSET_BITS=64. */
+ if (sizeof (regoff_t) < sizeof (off_t))
+ exit (1);
+
exit (0);]])],
- [gl_cv_func_working_re_compile_pattern=yes],
- [gl_cv_func_working_re_compile_pattern=no],
+ [gl_cv_func_re_compile_pattern_broken=no],
+ [gl_cv_func_re_compile_pattern_broken=yes],
dnl When crosscompiling, assume it is broken.
- [gl_cv_func_working_re_compile_pattern=no])])
- if test $gl_cv_func_working_re_compile_pattern = yes; then
- ac_use_included_regex=no
- fi
-
- AC_ARG_WITH([included-regex],
- [ --without-included-regex don't compile regex; this is the default on
- systems with recent-enough versions of the GNU C
- Library (use with caution on other systems)],
- [gl_with_regex=$withval],
- [gl_with_regex=$ac_use_included_regex])
- if test "X$gl_with_regex" = Xyes; then
+ [gl_cv_func_re_compile_pattern_broken=yes])])
+ ac_use_included_regex=$gl_cv_func_re_compile_pattern_broken
+ ;;
+ *) AC_MSG_ERROR([Invalid value for --with-included-regex: $with_included_regex])
+ ;;
+ esac
+
+ if test $ac_use_included_regex = yes; then
+ AC_DEFINE([re_syntax_options], [rpl_re_syntax_options],
+ [Define to rpl_re_syntax_options if the replacement should be used.])
+ AC_DEFINE([re_set_syntax], [rpl_re_set_syntax],
+ [Define to rpl_re_set_syntax if the replacement should be used.])
+ AC_DEFINE([re_compile_pattern], [rpl_re_compile_pattern],
+ [Define to rpl_re_compile_pattern if the replacement should be used.])
+ AC_DEFINE([re_compile_fastmap], [rpl_re_compile_fastmap],
+ [Define to rpl_re_compile_fastmap if the replacement should be used.])
+ AC_DEFINE([re_search], [rpl_re_search],
+ [Define to rpl_re_search if the replacement should be used.])
+ AC_DEFINE([re_search_2], [rpl_re_search_2],
+ [Define to rpl_re_search_2 if the replacement should be used.])
+ AC_DEFINE([re_match], [rpl_re_match],
+ [Define to rpl_re_match if the replacement should be used.])
+ AC_DEFINE([re_match_2], [rpl_re_match_2],
+ [Define to rpl_re_match_2 if the replacement should be used.])
+ AC_DEFINE([re_set_registers], [rpl_re_set_registers],
+ [Define to rpl_re_set_registers if the replacement should be used.])
+ AC_DEFINE([re_comp], [rpl_re_comp],
+ [Define to rpl_re_comp if the replacement should be used.])
+ AC_DEFINE([re_exec], [rpl_re_exec],
+ [Define to rpl_re_exec if the replacement should be used.])
+ AC_DEFINE([regcomp], [rpl_regcomp],
+ [Define to rpl_regcomp if the replacement should be used.])
+ AC_DEFINE([regexec], [rpl_regexec],
+ [Define to rpl_regexec if the replacement should be used.])
+ AC_DEFINE([regerror], [rpl_regerror],
+ [Define to rpl_regerror if the replacement should be used.])
+ AC_DEFINE([regfree], [rpl_regfree],
+ [Define to rpl_regfree if the replacement should be used.])
AC_LIBOBJ([regex])
gl_PREREQ_REGEX
fi
projects / gnulib.git / blobdiff