diff options
| -rw-r--r-- | m4/regex.m4 | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/m4/regex.m4 b/m4/regex.m4 index e5468c655..2a638d6af 100644 --- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,19 +1,26 @@ -#serial 2 +#serial 3 dnl Derived from code in GNU grep. AC_DEFUN(jm_WITH_REGEX, [ + AC_REQUIRE([AM_GLIBC]) + dnl Even packages that don't use regex.c can use this macro. dnl Of course, for them it doesn't do anything. syscmd([test -f lib/regex.c]) ifelse(sysval, 0, [ + # By default, don't use the included regex.c on systems with glibc 2 + test "$ac_cv_glibc" = yes && default=no || default=yes + AC_ARG_WITH(included-regex, - [ --without-included-regex don't compile regex (use with caution)], + [ --without-included-regex don't compile regex; this is the default on + systems with version 2 of the GNU C library + (use with caution on other system)], jm_with_regex=$withval, - jm_with_regex=yes) + jm_with_regex=$default) if test "$jm_with_regex" = yes; then LIBOBJS="$LIBOBJS regex.o" fi |