* modules/glob (Files): Add glob-libc.h.

[gnulib.git] / m4 / regex.m4

diff --git a/m4/regex.m4 b/m4/regex.m4
index c3c3a77..6addb10 100644 (file)
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-#serial 28
+#serial 29
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
 # Software Foundation, Inc.
@@ -14,6 +14,10 @@ AC_PREREQ([2.50])
 
 AC_DEFUN([gl_REGEX],
 [
+  AC_REQUIRE([AC_SYS_LARGEFILE]) dnl for a sufficently-wide off_t
+  AC_DEFINE([_REGEX_LARGE_OFFSETS], 1,
+    [Define if you want regoff_t to be at least as wide POSIX requires.])
+
   AC_LIBSOURCES(
     [regcomp.c, regex.c, regex.h,
      regex_internal.c, regex_internal.h, regexec.c])
@@ -97,6 +101,13 @@ AC_DEFUN([gl_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_re_compile_pattern_broken=no],
        [gl_cv_func_re_compile_pattern_broken=yes],