gperftools/m4/ac_have_attribute.m4
csilvers c437e1fcdd Tue Jul 17 22:26:27 2007 Google Inc. <opensource@google.com>
* google-perftools: version 0.92 release
	* PERFORMANCE: use a packed cache to speed up tcmalloc
	* PORTING: preliminary windows support! (see README.windows)
	* PORTING: better support for solaris, OS X, FreeBSD (see INSTALL)
	* Envvar support for running the heap-checker under gdb
	* Add weak declarations to maybe_threads to fix no-pthreads compile bugs
	* Some 64bit fixes, especially with pprof
	* Better heap-checker support for some low-level allocations
	* Fix bug where heap-profiles would sometimes get truncated
	* New documentation about how to handle common heap leak situations
	* Use computed includes for hash_map/set: easier config
	* Added all used .m4 templates to the distribution


git-svn-id: http://gperftools.googlecode.com/svn/trunk@36 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
2007-07-18 18:30:50 +00:00

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AC_DEFUN([AX_C___ATTRIBUTE__], [
AC_MSG_CHECKING(for __attribute__)
AC_CACHE_VAL(ac_cv___attribute__, [
AC_TRY_COMPILE(
[#include <stdlib.h>
static void foo(void) __attribute__ ((unused));
void foo(void) { exit(1); }],
[],
ac_cv___attribute__=yes,
ac_cv___attribute__=no
)])
if test "$ac_cv___attribute__" = "yes"; then
AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
fi
AC_MSG_RESULT($ac_cv___attribute__)
])