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Cleanup gatomic checks

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This commit is contained in:
Behdad Esfahbod 2011-08-11 08:33:23 +02:00
parent 21e682388d
commit fc442bdbe6
1 changed files with 17 additions and 22 deletions
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39
configure.ac
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@ -2480,25 +2480,11 @@ if test "$glib_cv_monotonic_clock" = "yes"; then
fi
dnl ********************************
dnl *** g_atomic_* tests for gcc ***
dnl ********************************
dnl ************************
dnl *** g_atomic_* tests ***
dnl ************************
AC_MSG_CHECKING([whether to use assembler code for atomic operations])
glib_cv_gcc_has_builtin_atomic_operations=no
if test x"$GCC" = xyes; then
AC_MSG_CHECKING([whether GCC supports built-in atomic intrinsics])
AC_TRY_LINK([],
[int i;
__sync_synchronize ();
__sync_bool_compare_and_swap (&i, 0, 1);
__sync_fetch_and_add (&i, 1);
],
[glib_cv_gcc_has_builtin_atomic_operations=yes],
[glib_cv_gcc_has_builtin_atomic_operations=no])
AC_MSG_RESULT($glib_cv_gcc_has_builtin_atomic_operations)
case $host_cpu in
i386)
AC_MSG_RESULT([none])
@ -2595,11 +2581,20 @@ if test x"$GCC" = xyes; then
glib_memory_barrier_needed=yes
;;
esac
else
if test $glib_native_win32 = yes; then
# For Windows but not using gcc. No barriers needed then either.
glib_memory_barrier_needed=no
fi
glib_cv_gcc_has_builtin_atomic_operations=no
if test x"$GCC" = xyes; then
AC_MSG_CHECKING([whether GCC supports built-in atomic intrinsics])
AC_TRY_LINK([],
[int i;
__sync_synchronize ();
__sync_bool_compare_and_swap (&i, 0, 1);
__sync_fetch_and_add (&i, 1);
],
[glib_cv_gcc_has_builtin_atomic_operations=yes],
[glib_cv_gcc_has_builtin_atomic_operations=no])
AC_MSG_RESULT($glib_cv_gcc_has_builtin_atomic_operations)
fi
AM_CONDITIONAL(HAVE_GCC_BUILTINS_FOR_ATOMIC_OPERATIONS,