Bug 705691 - Build cairo with the MUTEX option. r=mattwoodrow

gfx/cairo/cairo/src/Makefile.in

@@ -187,6 +187,8 @@ endif # GNU_CC
 
 DEFINES += -DPACKAGE_VERSION="\"moz\"" -DPACKAGE_BUGREPORT="\"http://bugzilla.mozilla.org/\""
 
+DEFINES += -DCAIRO_HAS_PTHREAD -D_GNU_SOURCE
+
 ifeq ($(MOZ_WIDGET_TOOLKIT),windows)
 DEFINES += -DCAIRO_WIN32_STATIC_BUILD
 endif

gfx/cairo/cairo/src/cairo-platform.h

@@ -66,6 +66,4 @@
 #define FLOAT_WORDS_BIGENDIAN
 #endif
 
-#define CAIRO_NO_MUTEX 1
-
 #endif /* CAIRO_PLATFORM_H */