From b5ebe404f1388ddda3603e53277f87e0b96ba695 Mon Sep 17 00:00:00 2001
From: Thibault Saunier <tsaunier@igalia.com>
Date: Mon, 11 Jun 2018 16:14:38 -0400
Subject: [PATCH] configure: use pkg-config for PCRE detection

---
 configure.in | 27 +++++----------------------
 1 file changed, 5 insertions(+), 22 deletions(-)

diff --git a/configure.in b/configure.in
index 761e836..b155d4b 100644
--- a/configure.in
+++ b/configure.in
@@ -215,28 +215,11 @@ fi
 AC_ARG_WITH(pcre,
 APACHE_HELP_STRING(--with-pcre=PATH,Use external PCRE library))
 
-AC_PATH_PROG(PCRE_CONFIG, pcre-config, false)
-if test -d "$with_pcre" && test -x "$with_pcre/bin/pcre-config"; then
-   PCRE_CONFIG=$with_pcre/bin/pcre-config
-elif test -x "$with_pcre"; then
-   PCRE_CONFIG=$with_pcre
-fi
-
-if test "$PCRE_CONFIG" != "false"; then
-  if $PCRE_CONFIG --version >/dev/null 2>&1; then :; else
-    AC_MSG_ERROR([Did not find pcre-config script at $PCRE_CONFIG])
-  fi
-  case `$PCRE_CONFIG --version` in
-  [[1-5].*])
-    AC_MSG_ERROR([Need at least pcre version 6.0])
-    ;;
-  esac
-  AC_MSG_NOTICE([Using external PCRE library from $PCRE_CONFIG])
-  APR_ADDTO(PCRE_INCLUDES, [`$PCRE_CONFIG --cflags`])
-  APR_ADDTO(PCRE_LIBS, [`$PCRE_CONFIG --libs`])
-else
-  AC_MSG_ERROR([pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/])
-fi
+PKG_CHECK_MODULES([PCRE], [libpcre], [
+  AC_DEFINE([HAVE_PCRE], [1], [Define if you have PCRE library])
+], [
+  AC_MSG_ERROR([$PCRE_PKG_ERRORS])
+])
 APACHE_SUBST(PCRE_LIBS)
 
 AC_MSG_NOTICE([])
-- 
2.17.1