diff options
-rw-r--r-- | m4/regex.m4 | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/m4/regex.m4 b/m4/regex.m4 index 2a7bfe014..733ad3a4e 100644 --- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -9,6 +9,23 @@ AC_DEFUN(jm_WITH_REGEX, USE_REGEX=$withval, USE_REGEX=yes) - test "$USE_REGEX" = "yes" && LIBOBJS="$LIBOBJS regex.o" + if test "$USE_REGEX" = yes; then + + LIBOBJS="$LIBOBJS regex.o" + + else + if test x = y; then + # This code is deliberately never run via ./configure. + # FIXME: this is a hack to make autoheader put the corresponding + # HAVE_* undef for this symbol in config.h.in. This saves me the + # trouble of having to maintain the #undef in acconfig.h manually. + AC_CHECK_FUNCS(LIBC_REGEX) + fi + # Defining it this way (rather than via AC_DEFINE) short-circuits the + # autoheader check -- autoheader doesn't know it's already been taken + # care of by the hack above. + ac_kludge=HAVE_LIBC_REGEX + AC_DEFINE_UNQUOTED($ac_kludge) + fi ] ) |