[GTK] Bump the minimum required Clang version to 3.3

https://bugs.webkit.org/show_bug.cgi?id=127178

Reviewed by Martin Robinson.

* Source/autotools/CheckSystemAndBasicDependencies.m4: Require Clang 3.3 or later when using the Clang compiler to
build the GTK port. Building with Clang 3.2 doesn't work anymore and there's no point in fixing that, as we should
support the latest two versions of Clang (3.3 and 3.4), just like we do with GCC (4.7 and 4.8).


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@162249 268f45cc-cd09-0410-ab3c-d52691b4dbfc

ChangeLog

+2014-01-18  Zan Dobersek  <zdobersek@igalia.com>
+
+        [GTK] Bump the minimum required Clang version to 3.3
+        https://bugs.webkit.org/show_bug.cgi?id=127178
+
+        Reviewed by Martin Robinson.
+
+        * Source/autotools/CheckSystemAndBasicDependencies.m4: Require Clang 3.3 or later when using the Clang compiler to
+        build the GTK port. Building with Clang 3.2 doesn't work anymore and there's no point in fixing that, as we should
+        support the latest two versions of Clang (3.3 and 3.4), just like we do with GCC (4.7 and 4.8).
+
 2014-01-14  Dan Bernstein  <mitz@apple.com>
 
         Only use color in make output when it’s going to a terminal.

Source/autotools/CheckSystemAndBasicDependencies.m4

@@ -92,14 +92,14 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
 #endif
 ])], [c_compiler="gcc"], [])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
-#if !(defined(__clang__) && __clang_major__ >= 3 && __clang_minor__ >= 2)
+#if !(defined(__clang__) && __clang_major__ >= 3 && __clang_minor__ >= 3)
 #error Not a supported Clang compiler
 #endif
 ])], [c_compiler="clang"], [])
 AC_LANG_POP([C])
 
 if test "$c_compiler" = "unknown"; then
-    AC_MSG_ERROR([Compiler GCC >= 4.7 or Clang >= 3.2 is required for C compilation])
+    AC_MSG_ERROR([Compiler GCC >= 4.7 or Clang >= 3.3 is required for C compilation])
 fi
 
 # Check that an appropriate C++ compiler is available.
@@ -111,14 +111,14 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
 #endif
 ])], [cxx_compiler="g++"], [])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
-#if !(defined(__clang__) && __clang_major__ >= 3 && __clang_minor__ >= 2)
+#if !(defined(__clang__) && __clang_major__ >= 3 && __clang_minor__ >= 3)
 #error Not a supported Clang++ compiler
 #endif
 ])], [cxx_compiler="clang++"], [])
 AC_LANG_POP([C++])
 
 if test "$cxx_compiler" = "unknown"; then
-    AC_MSG_ERROR([Compiler GCC >= 4.7 or Clang >= 3.2 is required for C++ compilation])
+    AC_MSG_ERROR([Compiler GCC >= 4.7 or Clang >= 3.3 is required for C++ compilation])
 fi
 
 # C/C++ Headers