build: detect endianness at compile time

Signed-off-by: Julien Danjou <julien@danjou.info>

awesomeConfig.cmake

@@ -28,6 +28,11 @@ add_definitions(-std=gnu99 -ggdb3 -fno-strict-aliasing -Wall -Wextra
     -Wstrict-prototypes)
 # }}}
 
+# {{{ Endianness
+include(TestBigEndian)
+TEST_BIG_ENDIAN(AWESOME_IS_BIG_ENDIAN)
+# }}}
+
 # {{{ Find external utilities
 macro(a_find_program var prg req)
     set(required ${req})

config.h.in

@@ -3,6 +3,7 @@
 
 #define AWESOME_LUA_LIB_PATH  "@AWESOME_LUA_LIB_PATH@"
 #define XDG_CONFIG_DIR        "@XDG_CONFIG_DIR@"
+#define AWESOME_IS_BIG_ENDIAN @AWESOME_IS_BIG_ENDIAN@
 
 #cmakedefine WITH_DBUS