1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
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 End of efl_attribute.m4
|
