+dnl Check for PCRE.
+AC_CHECK_LIB([pcre],[pcre_compile],
+ [AC_SUBST([LIBPCRE], ["-lpcre"])],
+ [AC_MSG_FAILURE(
+ [Perl Compatible Regular Expressions library (PCRE) is required])])
+AC_CHECK_HEADER([pcre.h],[],
+ [AC_MSG_FAILURE(
+ [Perl Compatible Regular Expressions library (PCRE) header file pcre.h is required])])
+