From 1315294c31214a76af35b8d540e3d792e5d0f850 Mon Sep 17 00:00:00 2001
From: Tiago Rezende Campos Falcao <developer@tiagofalcao.com>
Date: Tue, 24 Nov 2009 01:39:18 +0000
Subject: pkg-config colorblind check

---
diff --git a/configure.in b/configure.in
index 2cec7bf..c6661ab 100644
--- a/configure.in
+++ b/configure.in
@@ -230,10 +230,32 @@ else
 fi
 
 dnl Checking for the presence of the colorblind library.
-AC_CHECK_LIB(colorblind, colorblind_create, COLORBLIND_LIBS=-lcolorblind, have_colorblind=no)
-if test "x$COLORBLIND_LIBS" != "x" ; then
-    AC_CHECK_HEADERS([colorblind.h], have_colorblind=yes, have_colorblind=no)
-    AC_DEFINE(HAVE_LIBCOLORBLIND, 1, [The colorblind library is present.])
+want_colorblind="auto"
+have_colorblind="no"
+AC_ARG_ENABLE([colorblind],
+   AC_HELP_STRING([--disable-colorblind],
+      [disable colorblind fix. @<:@default=auto@:>@]),
+   [
+    if test "x${enableval}" = "xyes" ; then
+       want_colorblind="yes"
+    else
+       want_colorblind="no"
+    fi
+   ])
+
+
+if test "x${want_colorblind}" = "xyes" -o "x${want_colorblind}" = "xauto" ; then
+   PKG_CHECK_MODULES([COLORBLIND],
+      [colorblind],
+      [
+       have_colorblind="yes"
+       AC_DEFINE(HAVE_COLORBLIND, 1, [have colorblind fix.])
+      ],
+      [
+       if test "x${want_colorblind}" = "xyes" -a "x${use_strict}" = "xyes" ; then
+          AC_MSG_ERROR([Colorblind not found (strict dependencies checking)])
+       fi
+      ])
 fi
 
 dnl WIN32 Specifics
--
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