-#serial 1
+#serial 2
-dnl From grep.
+dnl Derived from code in GNU grep.
AC_DEFUN(jm_WITH_REGEX,
[
- AC_ARG_WITH(included-regex,
- [ --without-included-regex don't compile regex],
- USE_REGEX=$withval,
- USE_REGEX=yes)
+ dnl Even packages that don't use regex.c can use this macro.
+ dnl Of course, for them it doesn't do anything.
- if test "$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
+ syscmd([test -f lib/regex.c])
+ ifelse(sysval, 0,
+ [
+ AC_ARG_WITH(included-regex,
+ [ --without-included-regex don't compile regex (use with caution)],
+ jm_with_regex=$withval,
+ jm_with_regex=yes)
+ if test "$jm_with_regex" = yes; then
+ LIBOBJS="$LIBOBJS regex.o"
+ fi
+ ],
+ )
]
)