fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-02-25 13:00:30 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

[configure.in] Cache atomic-ops check results

Browse source
This commit is contained in:
Behdad Esfahbod 2008-09-01 22:49:16 -04:00
parent 7af228ab83
commit 74cd03be70
1 changed files with 14 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
configure.in
View file

@ -158,36 +158,37 @@ dnl ===========================================================================
dnl
dnl Test for native atomic operations.
dnl
AC_MSG_CHECKING([for native atomic primitives])
cairo_atomic_primitives="none"
AC_CACHE_CHECK([for native atomic primitives], cairo_cv_atomic_primitives, [
cairo_cv_atomic_primitives="none"
AC_TRY_LINK([int atomic_add(int i) { return __sync_fetch_and_add (&i, 1); }], [],
AC_DEFINE(CAIRO_HAS_INTEL_ATOMIC_PRIMITIVES, 1, [Enable if your compiler supports the Intel __sync_* atomic primitives])
cairo_atomic_primitives="Intel"
cairo_cv_atomic_primitives="Intel"
)
])
if test "x$cairo_cv_atomic_primitives" = xIntel; then
AC_DEFINE(CAIRO_HAS_INTEL_ATOMIC_PRIMITIVES, 1, [Enable if your compiler supports the Intel __sync_* atomic primitives])
fi
AC_MSG_RESULT([$cairo_atomic_primitives])
AC_MSG_CHECKING([whether atomic ops require a memory barrier])
AC_CACHE_CHECK([whether atomic ops require a memory barrier], cairo_cv_atomic_op_needs_memory_barrier, [
case $host_cpu in
i?86)
cairo_atomic_op_needs_memory_barrier="no"
cairo_cv_atomic_op_needs_memory_barrier="no"
;;
x86_64)
cairo_atomic_op_needs_memory_barrier="no"
cairo_cv_atomic_op_needs_memory_barrier="no"
;;
arm*)
cairo_atomic_op_needs_memory_barrier="no"
cairo_cv_atomic_op_needs_memory_barrier="no"
;;
*)
cairo_atomic_op_needs_memory_barrier="yes"
cairo_cv_atomic_op_needs_memory_barrier="yes"
;;
esac
if test "x$cairo_atomic_op_needs_memory_barrier" = "xyes"; then
])
if test "x$cairo_cv_atomic_op_needs_memory_barrier" = "xyes"; then
AC_DEFINE_UNQUOTED(CAIRO_ATOMIC_OP_NEEDS_MEMORY_BARRIER, 1,
[whether Cairo needs memory barriers around atomic ops])
fi
AC_MSG_RESULT([$cairo_atomic_op_needs_memory_barrier])
dnl ===========================================================================