vkd3d/m4/check-builtin-atomic.m4

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dnl VKD3D_CHECK_SYNC_ADD_AND_FETCH_FUNC
AC_DEFUN([VKD3D_CHECK_SYNC_ADD_AND_FETCH_FUNC],
[AC_MSG_CHECKING([for __sync_add_and_fetch])
AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) { return __sync_add_and_fetch((int *)0, 0); }])],
[AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_SYNC_ADD_AND_FETCH],
[1],
[Define to 1 if you have __sync_add_and_fetch.])],
[AC_MSG_RESULT([no])])])
dnl VKD3D_CHECK_SYNC_SUB_AND_FETCH_FUNC
AC_DEFUN([VKD3D_CHECK_SYNC_SUB_AND_FETCH_FUNC],
[AC_MSG_CHECKING([for __sync_sub_and_fetch])
AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) { return __sync_sub_and_fetch((int *)0, 0); }])],
[AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_SYNC_SUB_AND_FETCH],
[1],
[Define to 1 if you have __sync_sub_and_fetch.])],
[AC_MSG_RESULT([no])])])