1 files changed, 83 insertions, 0 deletions
diff --git a/m4/efl_attribute.m4 b/m4/efl_attribute.m4
new file mode 100644
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+++ b/m4/efl_attribute.m4
@@ -0,0 +1,83 @@
+dnl Copyright (C) 2011 Vincent Torri <vtorri at univ-evry dot fr>
+dnl That code is public domain and can be freely used or copied.
+
+dnl Macros for checking if the compiler supports some __attribute__ uses
+
+dnl Usage: EFL_ATTRIBUTE_VECTOR
+dnl call AC_DEFINE for HAVE_GCC_ATTRIBUTE_VECTOR if __attribute__((vector)) is available
+
+AC_DEFUN([EFL_ATTRIBUTE_VECTOR],
+[
+AC_MSG_CHECKING([for __attribute__ ((vector))])
+AC_COMPILE_IFELSE(
+   [AC_LANG_PROGRAM(
+       [[
+typedef int v4si __attribute__ ((vector_size (16)));
+       ]],
+       [[
+if (sizeof(v4si) == 16)
+  return 0;
+else
+  return -1;
+       ]])],
+   [have_attribute_vector="yes"],
+   [have_attribute_vector="no"])
+AC_MSG_RESULT([${have_attribute_vector}])
+
+if test "x${have_attribute_vector}" = "xyes" ; then
+   AC_DEFINE([HAVE_GCC_ATTRIBUTE_VECTOR], [1], [Define to 1 if your compiler supports __attribute__ ((vector)).])
+fi
+])
+
+dnl Usage: EFL_ATTRIBUTE_ALWAYS_INLINE
+dnl call AC_DEFINE for alway_inline if __attribute__((always_inline)) is available
+
+AC_DEFUN([EFL_ATTRIBUTE_ALWAYS_INLINE],
+[
+
+have_attribute_forceinline="no"
+
+AC_MSG_CHECKING([for __forceinline])
+
+AC_COMPILE_IFELSE(
+   [AC_LANG_PROGRAM(
+       [[
+#include <windows.h>
+static __forceinline void foo(void) {}
+       ]],
+       [[
+       ]])],
+   [
+    have_attribute_always_inline="yes"
+    have_attribute_forceinline="yes"
+   ],
+   [have_attribute_always_inline="no"])
+
+AC_MSG_RESULT([${have_attribute_always_inline}])
+
+if test "x${have_attribute_always_inline}" = "xno" ; then
+   AC_MSG_CHECKING([for __attribute__ ((__always_inline__))])
+   AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+          [[
+static __attribute__((__always_inline__)) inline void foo(void) {}
+          ]],
+          [[
+          ]])],
+      [have_attribute_always_inline="yes"],
+      [have_attribute_always_inline="no"])
+   AC_MSG_RESULT([${have_attribute_always_inline}])
+fi
+
+if test "x${have_attribute_always_inline}" = "xyes" ; then
+   if test "x${have_attribute_forceinline}" = "xyes" ; then
+      AC_DEFINE([EFL_ALWAYS_INLINE], [__forceinline], [Macro declaring a function to always be inlined.])
+   else
+      AC_DEFINE([EFL_ALWAYS_INLINE], [__attribute__ ((__always_inline__)) inline], [Macro declaring a function to always be inlined.])
+   fi
+else
+   AC_DEFINE([EFL_ALWAYS_INLINE], [static inline], [Macro declaring a function to always be inlined.])
+fi
+])
+
+dnl End of efl_attribute.m4