diff options
| author | Thiago Macieira <thiago@kde.org> | 2009-07-16 15:17:25 +0200 |
|---|---|---|
| committer | Thiago Macieira <thiago@kde.org> | 2009-07-16 16:00:57 +0200 |
| commit | 9f06daccce3f4e75cfac7c97bfb1743affb55cb2 (patch) | |
| tree | ba1a4fffef795158e8c4ab739234aa156bc35cd5 /configure.in | |
| parent | 89f70b19495e9c3dadbbb7b51ce1629fa22ea3af (diff) | |
Fix detection of the GCC __sync intrinsics.
We have to use the return value, otherwise GCC optimises the code
by using instructions that don't return anything. That won't
match what we actually use in dbus-sysdeps-unix.c
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.in b/configure.in index 036679ce..2a0e64e2 100644 --- a/configure.in +++ b/configure.in @@ -595,7 +595,7 @@ fi AC_CACHE_CHECK([whether $CC knows __sync_sub_and_fetch()], dbus_cv_sync_sub_and_fetch, [AC_LINK_IFELSE( - AC_LANG_PROGRAM([], [[int a = 4; __sync_sub_and_fetch(&a, 4);]]), + AC_LANG_PROGRAM([], [[int a = 4; int b = __sync_sub_and_fetch(&a, 4);]]), [dbus_cv_sync_sub_and_fetch=yes], [dbus_cv_sync_sub_and_fetch=no]) ]) |