From a01e04fee00d771e3c9d9551219246ebf4f9663d Mon Sep 17 00:00:00 2001
From: James Zern <jzern@google.com>
Date: Sat, 7 Dec 2013 11:56:34 -0800
Subject: [PATCH] autoconf: add --disable-wic

this allows windows builds to prefer libjpeg, libpng etc. for import and
export

Change-Id: Ibe1648b68a3f7b5016044e82530843dea46a94a4
---
 configure.ac | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 09405636..a9238eb5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -316,7 +316,13 @@ AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
 
 dnl === check for WIC support ===
 
-if test "$target_os" = "mingw32"; then
+AC_ARG_ENABLE([wic],
+              AS_HELP_STRING([--disable-wic],
+                             [Disable Windows Imaging Component (WIC) detection.
+                              @<:@default=auto@:>@]),,
+              [enable_wic=yes])
+
+if test "$target_os" = "mingw32" -a "$enable_wic" = "yes"; then
   AC_CHECK_HEADERS([wincodec.h shlwapi.h windows.h])
   if test "$ac_cv_header_wincodec_h" = "yes"; then
     AC_MSG_CHECKING(for Windows Imaging Component support)