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update ac_attribute.m4 

SVN revision: 38582
This commit is contained in:
Vincent Torri 2009-01-14 08:37:03 +00:00
parent 849d65df62
commit 2b34377d37
1 changed files with 7 additions and 5 deletions
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12
legacy/embryo/m4/ac_attribute.m4
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@ -1,7 +1,9 @@
dnl Copyright (C) 2004-2008 Kim Woelders
dnl Copyright (C) 2008 Vincent Torri <vtorri at univ-evry dot fr> dnl Copyright (C) 2008 Vincent Torri <vtorri at univ-evry dot fr>
dnl That code is public domain and can be freely used or copied. dnl That code is public domain and can be freely used or copied.
dnl Originally snatched from somewhere...
dnl Macro that check if the compiler supports __atribute__ dnl Macro for checking if the compiler supports __attribute__
dnl Usage: AC_C___ATTRIBUTE__ dnl Usage: AC_C___ATTRIBUTE__
dnl call AC_DEFINE for HAVE___ATTRIBUTE__ and __UNUSED__ dnl call AC_DEFINE for HAVE___ATTRIBUTE__ and __UNUSED__
@ -19,14 +21,14 @@ AC_CACHE_VAL([ac_cv___attribute__],
[AC_TRY_COMPILE( [AC_TRY_COMPILE(
[ [
#include <stdlib.h> #include <stdlib.h>
],
[
int func(int x); int func(int x);
int foo(int x __attribute__ ((unused))) int foo(int x __attribute__ ((unused)))
{ {
exit(1); exit(1);
} }
], ],
[],
[ac_cv___attribute__="yes"], [ac_cv___attribute__="yes"],
[ac_cv___attribute__="no"] [ac_cv___attribute__="no"]
)] )]
@ -36,9 +38,9 @@ AC_MSG_RESULT($ac_cv___attribute__)
if test "x${ac_cv___attribute__}" = "xyes" ; then if test "x${ac_cv___attribute__}" = "xyes" ; then
AC_DEFINE([HAVE___ATTRIBUTE__], [1], [Define to 1 if your compiler has __attribute__]) AC_DEFINE([HAVE___ATTRIBUTE__], [1], [Define to 1 if your compiler has __attribute__])
AC_DEFINE([__UNUSED__], [__attribute__((unused))], [Define to __attribute__((unused)) if your compiler has __attribute__]) AC_DEFINE([__UNUSED__], [__attribute__((unused))], [Macro declaring a function argument to be unused])
else else
AC_DEFINE([__UNUSED__], [], [Define to nothing if your compiler does not support __attribute__]) AC_DEFINE([__UNUSED__], [], [Macro declaring a function argument to be unused])
fi fi
]) ])