ag_check_posix_regcomp

Download the M4 Source.

Synopsis

AG_CHECK_POSIX_REGCOMP

Version

$Revision: 1.3 $ 0.5.65 : bkorb

Author

Bruce Korb <bkorb@gnu.org>

Description

-*- buffer-read-only: t -*- vi: set ro:

DO NOT EDIT THIS FILE (ag_check_posix_regcomp.m4)

It has been AutoGen-ed Saturday December 1, 2001 at 09:21:28 PM PST From the definitions bkorb.def and the template file conftest.tpl See: http://autogen.sf.net for a description of the AutoGen project

Check that the POSIX compliant regular expression compiler is available in the POSIX specified manner, and it works. If it fails, we have a backup -- use gnu-regex.

M4 Source Code

AC_DEFUN([AG_CHECK_POSIX_REGCOMP],[
  AC_MSG_CHECKING([whether POSIX compliant regcomp()/regexec()])
  AC_CACHE_VAL([ag_cv_posix_regcomp],[
  AC_TRY_RUN([#include <sys/types.h>
#include <regex.h>
int main() {
  int flags = REG_EXTENDED|REG_ICASE|REG_NEWLINE;
  regex_t  re;
  if (regcomp( &re, "^.*$", flags ) != 0)
    return 1;
  return regcomp( &re, "|no.*", flags ); }],[ag_cv_posix_regcomp=yes],[ag_cv_posix_regcomp=no],[ag_cv_posix_regcomp=no]
  ) # end of TRY_RUN]) # end of CACHE_VAL

  AC_MSG_RESULT([$ag_cv_posix_regcomp])
  if test x$ag_cv_posix_regcomp = xyes
  then
    AC_DEFINE(HAVE_POSIX_REGCOMP, 1,
       [Define this if POSIX compliant regcomp()/regexec()])
  fi
]) # end of AC_DEFUN of AG_CHECK_POSIX_REGCOMP