diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 65 |
1 files changed, 65 insertions, 0 deletions
@@ -15703,6 +15703,71 @@ $as_echo "#define HAVE_IPA_PURE_CONST_BUG 1" >>confdefs.h esac fi +# Check for stdatomic.h +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for stdatomic.h" >&5 +$as_echo_n "checking for stdatomic.h... " >&6; } +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + + #include <stdatomic.h> + _Atomic int value = ATOMIC_VAR_INIT(1); + int main() { + int loaded_value = atomic_load(&value); + return 0; + } + + +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + have_stdatomic_h=yes +else + have_stdatomic_h=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_stdatomic_h" >&5 +$as_echo "$have_stdatomic_h" >&6; } + +if test "$have_stdatomic_h" = yes; then + +$as_echo "#define HAVE_STD_ATOMIC 1" >>confdefs.h + +fi + +# Check for GCC >= 4.7 __atomic builtins +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GCC >= 4.7 __atomic builtins" >&5 +$as_echo_n "checking for GCC >= 4.7 __atomic builtins... " >&6; } +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + + volatile int val = 1; + int main() { + __atomic_load_n(&val, __ATOMIC_SEQ_CST); + return 0; + } + + +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + have_builtin_atomic=yes +else + have_builtin_atomic=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_builtin_atomic" >&5 +$as_echo "$have_builtin_atomic" >&6; } + +if test "$have_builtin_atomic" = yes; then + +$as_echo "#define HAVE_BUILTIN_ATOMIC 1" >>confdefs.h + +fi + # ensurepip option { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ensurepip" >&5 $as_echo_n "checking for ensurepip... " >&6; } |