diff options
| author | Cory Fields <theuni-nospam-@xbmc.org> | 2012-10-15 15:42:14 -0400 |
|---|---|---|
| committer | Cory Fields <theuni-nospam-@xbmc.org> | 2012-10-16 13:51:53 -0400 |
| commit | c3adf6738cb94764d0fbccdd3c08b20788a5218c (patch) | |
| tree | 081fff0d23f9eab1a86f223ba775e20b5d1c84a3 /configure.in | |
| parent | 937ace2faccf04d50ed666aae7964f534bf499f1 (diff) | |
build: quit guessing about intrinsics, check specifics
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/configure.in b/configure.in index bd2f6f4edf..b300fac18d 100644 --- a/configure.in +++ b/configure.in @@ -811,6 +811,37 @@ AC_CHECK_FUNCS([atexit dup2 fdatasync floor fs_stat_dev ftime ftruncate getcwd g AC_CHECK_SIZEOF([int]) AC_CHECK_SIZEOF([size_t]) +# Check for intrinsics +AC_MSG_CHECKING([for __sync_add_and_fetch(temp, 1)]) +AC_TRY_COMPILE([],[long* temp=0; __sync_add_and_fetch(temp, 1);], + [have_builtin_sync_add_and_fetch=yes], + [have_builtin_sync_add_and_fetch=no]) +AC_MSG_RESULT($have_builtin_sync_add_and_fetch) +if test "x$have_builtin_sync_add_and_fetch" = "xyes"; then + AC_DEFINE(HAS_BUILTIN_SYNC_ADD_AND_FETCH, 1, + [Define to 1 if your compiler supports the __sync_add_and_fetch() intrinsic.]) +fi + +AC_MSG_CHECKING([for __sync_sub_and_fetch(temp, 1)]) +AC_TRY_COMPILE([],[long* temp=0; __sync_sub_and_fetch(temp, 1);], + [have_builtin_sync_sub_and_fetch=yes], + [have_builtin_sync_sub_and_fetch=no]) +AC_MSG_RESULT($have_builtin_sync_sub_and_fetch) +if test "x$have_builtin_sync_sub_and_fetch" = "xyes"; then + AC_DEFINE(HAS_BUILTIN_SYNC_SUB_AND_FETCH, 1, + [Define to 1 if your compiler supports the __sync_sub_and_fetch() intrinsic.]) +fi + +AC_MSG_CHECKING([for __sync_val_compare_and_swap(temp, 1, 1)]) +AC_TRY_COMPILE([],[long *temp = 0; __sync_val_compare_and_swap(temp, 1, 1);], + [have_builtin_sync_val_compare_and_swap=yes], + [have_builtin_sync_val_compare_and_swap=no]) +AC_MSG_RESULT($have_builtin_sync_val_compare_and_swap) +if test "x$have_builtin_sync_val_compare_and_swap" = "xyes"; then + AC_DEFINE(HAS_BUILTIN_SYNC_VAL_COMPARE_AND_SWAP, 1, + [Define to 1 if your compiler supports the __sync_val_compare_and_swap() intrinsic.]) +fi + # Add top source directory for all builds so we can use config.h INCLUDES="$INCLUDES -I\$(abs_top_srcdir)" |