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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_UNUSED
dnl call AC_DEFINE for __UNUSED__ if __attribute__((unused)) is available
AC_DEFUN([EFL_ATTRIBUTE_UNUSED],
[
AC_MSG_CHECKING([for __attribute__ ((unused))])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
void foo(int x __attribute__ ((unused))) {}
]],
[[
]])],
[have_attribute_unused="yes"],
[have_attribute_unused="no"])
AC_MSG_RESULT([${have_attribute_unused}])
if test "x${have_attribute_unused}" = "xyes" ; then
AC_DEFINE([__UNUSED__], [__attribute__ ((unused))], [Macro declaring a function argument to be unused.])
else
AC_DEFINE([__UNUSED__], [], [__attribute__ ((unused)) is not supported.])
fi
])
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>
__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(
[[
__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
|
