From 3a095ad4547c98706bd1acece32a39925251f3a9 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=D0=A0=D1=83=D1=81=D0=BB=D0=B0=D0=BD=20=D0=98=D0=B6=D0=B1?=
 =?utf8?q?=D1=83=D0=BB=D0=B0=D1=82=D0=BE=D0=B2?= <lrn1986@gmail.com>
Date: Fri, 29 Apr 2016 15:54:52 +0000
Subject: [PATCH] W32: support cairo library in non-standard locations

When checking for cairo_win32_surface_create_with_format in -lcairo,
temporarily put CAIRO_LIBS into LIBS so that AC_CHECK_LIB() can
find it in weird places like /usr/local/lib, where gcc would not look
on its own.

https://bugzilla.gnome.org/show_bug.cgi?id=765793
---
 configure.ac | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index e1f743de44..3718dbf898 100644
--- a/configure.ac
+++ b/configure.ac
@@ -581,18 +581,21 @@ PKG_CHECK_MODULES(BASE_DEPENDENCIES,
 PKG_CHECK_MODULES(CAIRO_BACKEND, [$cairo_backends])
 
 # Remove this check once cairo_required_version reaches at least 1.16.0
-case $host_os in
-  mingw*)
+AS_CASE([$host_os],
+  [mingw*],
+  [
     PKG_CHECK_MODULES(CAIRO, [cairo >= cairo_required_version])
+    gtk_save_LIBS="$LIBS"
+    LIBS="$CAIRO_LIBS $LIBS"
     AC_CHECK_LIB([cairo], [cairo_win32_surface_create_with_format],
       [AC_MSG_RESULT([found])],
       [AC_MSG_ERROR(
 [cairo_win32_surface_create_with_format is not found in cairo library
 You need a cairo snapshot 1.15.x or 1.16.x release or newer])])
-    ;;
-  *)
-    ;;
-esac
+    LIBS="$gtk_save_LIBS"
+  ],
+  []
+)
 
 
 PKG_CHECK_MODULES(GMODULE, [gmodule-2.0])
-- 
2.30.2