@ -38,25 +38,33 @@ AC_CHECK_FUNCS([close getpid gettimeofday localeconv open read sched_yield strto
AC_MSG_CHECKING([for gcc __sync builtins])
have_sync_builtins=no
AC_TRY_LINK(
[], [unsigned long val; __sync_bool_compare_and_swap(&val, 0, 1);],
[], [unsigned long val; __sync_bool_compare_and_swap(&val, 0, 1); __sync_add_and_fetch(&val, 1); __sync_sub_and_fetch(&val, 1); ],
[have_sync_builtins=yes],
)
if test "x$have_sync_builtins" = "xyes"; then
AC_DEFINE([HAVE_SYNC_BUILTINS], [1],
[Define to 1 if gcc's __sync builtins are available])
json_have_sync_builtins=1
else
json_have_sync_builtins=0
fi
AC_SUBST([json_have_sync_builtins])
AC_MSG_RESULT([$have_sync_builtins])
AC_MSG_CHECKING([for gcc __atomic builtins])
have_atomic_builtins=no
AC_TRY_LINK(
[], [char l; unsigned long v; __atomic_test_and_set(&l, __ATOMIC_RELAXED); __atomic_store_n(&v, 1, __ATOMIC_RELEASE); __atomic_load_n(&v, __ATOMIC_ACQUIRE);],
[], [char l; unsigned long v; __atomic_test_and_set(&l, __ATOMIC_RELAXED); __atomic_store_n(&v, 1, __ATOMIC_RELEASE); __atomic_load_n(&v, __ATOMIC_ACQUIRE); __atomic_add_fetch(&v, 1, __ATOMIC_ACQUIRE); __atomic_sub_fetch(&v, 1, __ATOMIC_RELEASE); ],
[have_atomic_builtins=yes],
)
if test "x$have_atomic_builtins" = "xyes"; then
AC_DEFINE([HAVE_ATOMIC_BUILTINS], [1],
[Define to 1 if gcc's __atomic builtins are available])
json_have_atomic_builtins=1
else
json_have_atomic_builtins=0
fi
AC_SUBST([json_have_atomic_builtins])
AC_MSG_RESULT([$have_atomic_builtins])
case "$ac_cv_type_long_long_int$ac_cv_func_strtoll" in