This file is part of MXE.
See index.html for further information.

Add an option to disable LTO which breaks static linking.

diff -Naur cairo-1.12.16/build/configure.ac.warnings cairo-1.12.16.new/build/configure.ac.warnings
--- cairo-1.12.16/build/configure.ac.warnings	2013-08-26 08:07:21.000000000 -0700
+++ cairo-1.12.16.new/build/configure.ac.warnings	2014-05-08 20:08:11.296371571 -0700
@@ -36,14 +36,30 @@
 dnl We also abuse the warning-flag facility to enable other compiler
 dnl options.  Namely, the following:
 
-dnl -flto working really needs a test link, not just a compile
+AC_ARG_ENABLE(lto,
+  AS_HELP_STRING([--enable-lto],
+                 [Enable link-time optimization.]), [
+if test "x$enableval" = "xyes"; then
+    dnl -flto working really needs a test link, not just a compile
 
-safe_MAYBE_WARN="$MAYBE_WARN"
-MAYBE_WARN="$MAYBE_WARN -flto"
-AC_TRY_LINK([],[
-	int main(int argc, char **argv) { return 0; }
-],[],[
-	MAYBE_WARN="$safe_MAYBE_WARN"
+    safe_MAYBE_WARN="$MAYBE_WARN"
+    MAYBE_WARN="$MAYBE_WARN -flto"
+    AC_TRY_LINK([],[
+	    int main(int argc, char **argv) { return 0; }
+    ],[],[
+	    MAYBE_WARN="$safe_MAYBE_WARN"
+    ])
+fi
+], [
+    dnl -flto working really needs a test link, not just a compile
+
+    safe_MAYBE_WARN="$MAYBE_WARN"
+    MAYBE_WARN="$MAYBE_WARN -flto"
+    AC_TRY_LINK([],[
+	    int main(int argc, char **argv) { return 0; }
+    ],[],[
+	    MAYBE_WARN="$safe_MAYBE_WARN"
+    ])
 ])
 
 MAYBE_WARN="$MAYBE_WARN -fno-strict-aliasing -fno-common"