cmake: Add detection whether the system is big endian

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

ConfigureChecks.cmake

@@ -12,6 +12,9 @@ find_package( TDE )
 
 tde_setup_architecture_flags( )
 
+include(TestBigEndian)
+test_big_endian(WORDS_BIGENDIAN)
+
 
 ##### check for gcc visibility support #########
 

config.h.cmake

@@ -3,6 +3,10 @@
 // Defined if you have fvisibility and fvisibility-inlines-hidden support.
 #cmakedefine __KDE_HAVE_GCC_VISIBILITY 1
 
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#cmakedefine WORDS_BIGENDIAN @WORDS_BIGENDIAN@
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #cmakedefine HAVE_UNISTD_H @HAVE_UNISTD_H@
 
@@ -291,18 +295,6 @@
 /* Defined if compiling without arts */
 /* #undef WITHOUT_ARTS */
 
-/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
-   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-/* #  undef WORDS_BIGENDIAN */
-# endif
-#endif
-
 /*
  * jpeg.h needs HAVE_BOOLEAN, when the system uses boolean in system
  * headers and I'm too lazy to write a configure test as long as only