Edit File: regex.m4
## --------------------------------- ## -*- Autoconf -*- ## Check if --with-regex was given. ## ## --------------------------------- ## # Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 # Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # serial 7 # AM_WITH_REGEX # ------------- # # The idea is to distribute rx.[hc] and regex.[hc] together, for a # while. The WITH_REGEX symbol is used to decide which of regex.h or # rx.h should be included in the application. If `./configure # --with-regex' is given (the default), the package will use gawk's # regex. If `./configure --without-regex', a check is made to see if # rx is already installed, as with newer Linux'es. If not found, the # package will use the rx from the distribution. If found, the # package will use the system's rx which, on Linux at least, will # result in a smaller executable file. # # FIXME: This macro seems quite obsolete now since rx doesn't seem to # be maintained, while regex is. AC_DEFUN([AM_WITH_REGEX], [AC_PREREQ(2.50)dnl AC_LIBSOURCES([rx.h, rx.c, regex.c, regex.h])dnl AC_MSG_CHECKING([which of GNU rx or gawk's regex is wanted]) AC_ARG_WITH([regex], [ --without-regex use GNU rx in lieu of gawk's regex for matching], [test "$withval" = yes && am_with_regex=1], [am_with_regex=1]) if test -n "$am_with_regex"; then AC_MSG_RESULT([regex]) AC_DEFINE([WITH_REGEX], 1, [Define if using GNU regex]) AC_CACHE_CHECK([for GNU regex in libc], [am_cv_gnu_regex], [AC_TRY_LINK([], [extern int re_max_failures; re_max_failures = 1], [am_cv_gnu_regex=yes], [am_cv_gnu_regex=no])]) if test $am_cv_gnu_regex = no; then AC_LIBOBJ([regex]) fi else AC_MSG_RESULT([rx]) AC_CHECK_FUNC([re_rx_search], , [AC_LIBOBJ([rx])]) fi[]dnl ]) AU_DEFUN([fp_WITH_REGEX], [AM_WITH_REGEX])
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