-dnl Check for PCRE (highly recommended)
-PKG_CHECK_MODULES([PCRE], [libpcre],
- [AC_SUBST([PCRE_CFLAGS])
- AC_SUBST([PCRE_LIBS])
- AC_DEFINE([HAVE_PCRE],[1],[PCRE found at compile time.])
- ],
- [AC_MSG_WARN([PCRE not found, some core features will be disabled])])
-