forked from enlightenment/efl
108 lines
3.0 KiB
Plaintext
108 lines
3.0 KiB
Plaintext
dnl Copyright (C) 2011 Vincent Torri <vtorri at univ-evry dot fr>
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dnl That code is public domain and can be freely used or copied.
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dnl Macros for checking if the compiler supports some __attribute__ uses
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dnl Usage: EFL_ATTRIBUTE_UNUSED
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dnl call AC_DEFINE for __UNUSED__ if __attribute__((unused)) is available
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AC_DEFUN([EFL_ATTRIBUTE_UNUSED],
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[
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AC_MSG_CHECKING([for __attribute__ ((unused))])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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void foo(int x __attribute__ ((unused))) {}
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]],
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[[
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]])],
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[have_attribute_unused="yes"],
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[have_attribute_unused="no"])
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AC_MSG_RESULT([${have_attribute_unused}])
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if test "x${have_attribute_unused}" = "xyes" ; then
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AC_DEFINE([__UNUSED__], [__attribute__ ((unused))], [Macro declaring a function argument to be unused.])
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else
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AC_DEFINE([__UNUSED__], [], [__attribute__ ((unused)) is not supported.])
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fi
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])
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dnl Usage: EFL_ATTRIBUTE_VECTOR
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dnl call AC_DEFINE for HAVE_GCC_ATTRIBUTE_VECTOR if __attribute__((vector)) is available
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AC_DEFUN([EFL_ATTRIBUTE_VECTOR],
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[
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AC_MSG_CHECKING([for __attribute__ ((vector))])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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typedef int v4si __attribute__ ((vector_size (16)));
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]],
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[[
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if (sizeof(v4si) == 16)
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return 0;
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else
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return -1;
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]])],
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[have_attribute_vector="yes"],
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[have_attribute_vector="no"])
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AC_MSG_RESULT([${have_attribute_vector}])
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if test "x${have_attribute_vector}" = "xyes" ; then
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AC_DEFINE([HAVE_GCC_ATTRIBUTE_VECTOR], [1], [Define to 1 if your compiler supports __attribute__ ((vector)).])
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fi
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])
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dnl Usage: EFL_ATTRIBUTE_ALWAYS_INLINE
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dnl call AC_DEFINE for alway_inline if __attribute__((always_inline)) is available
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AC_DEFUN([EFL_ATTRIBUTE_ALWAYS_INLINE],
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[
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have_attribute_forceinline="no"
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AC_MSG_CHECKING([for __forceinline])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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#include <windows.h>
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static __forceinline void foo(void) {}
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]],
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[[
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]])],
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[
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have_attribute_always_inline="yes"
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have_attribute_forceinline="yes"
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],
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[have_attribute_always_inline="no"])
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AC_MSG_RESULT([${have_attribute_always_inline}])
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if test "x${have_attribute_always_inline}" = "xno" ; then
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AC_MSG_CHECKING([for __attribute__ ((__always_inline__))])
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[
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static __attribute__((__always_inline__)) inline void foo(void) {}
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]],
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[[
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]])],
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[have_attribute_always_inline="yes"],
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[have_attribute_always_inline="no"])
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AC_MSG_RESULT([${have_attribute_always_inline}])
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fi
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if test "x${have_attribute_always_inline}" = "xyes" ; then
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if test "x${have_attribute_forceinline}" = "xyes" ; then
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AC_DEFINE([EFL_ALWAYS_INLINE], [__forceinline], [Macro declaring a function to always be inlined.])
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else
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AC_DEFINE([EFL_ALWAYS_INLINE], [__attribute__ ((__always_inline__)) inline], [Macro declaring a function to always be inlined.])
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fi
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else
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AC_DEFINE([EFL_ALWAYS_INLINE], [static inline], [Macro declaring a function to always be inlined.])
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fi
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])
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dnl End of efl_attribute.m4
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