From f7b0a9f3f6dd0cdaa7a097623896b0a1f56ee249 Mon Sep 17 00:00:00 2001
From: Kylie McClain <somasis@exherbo.org>
Date: Sat, 25 Jul 2015 20:14:23 -0400
Subject: [PATCH] configure.ac: Use pkg-config to find libxml2. Fixes cross
 compilation

This was originally submitted to Google Code, and was carried over
during GitHub migration; however, it was in patch form, so I've made
a pull request for it for quicker merging.

Original source: https://github.com/libarchive/libarchive/issues/407
Original author: ambrop7
---
 configure.ac | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2fd994b64..ea2c5d77a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -390,14 +390,14 @@ AC_ARG_WITH([expat],
   AS_HELP_STRING([--without-expat], [Don't build support for xar through expat]))
 
 if test "x$with_xml2" != "xno"; then
-  AC_PATH_PROG([XML2_CONFIG], [xml2-config],, [${PATH}])
-  if test "x$XML2_CONFIG" != "x"; then
-    CPPFLAGS="${CPPFLAGS} `${XML2_CONFIG} --cflags`"
-    LIBS="${LIBS} `${XML2_CONFIG} --libs`"
+  PKG_PROG_PKG_CONFIG
+  PKG_CHECK_MODULES(LIBXML2_PC, [libxml-2.0], [
+    CPPFLAGS="${CPPFLAGS} ${LIBXML2_PC_CFLAGS}"
+    LIBS="${LIBS} ${LIBXML2_PC_LIBS}"
     AC_CHECK_LIB(xml2,xmlInitParser,[true],AC_MSG_FAILURE(Missing xml2 library))
-  else
+  ], [
     AC_CHECK_LIB(xml2,xmlInitParser)
-  fi
+  ])
   AC_CHECK_HEADERS([libxml/xmlreader.h libxml/xmlwriter.h])
 fi
 if test "x$ac_cv_header_libxml_xmlreader_h" != "xyes"; then
-- 
2.47.2