intel: Add a configure option to *disable* building libdrm-intel

In conjunction with the atomic operation patch, it may be more
convenient for some people to disable building libdrm-intel and its
dependencies upon the atomic intrinsics then it is for them to use a
supported compiler.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/configure.ac b/configure.ac
index 2852962..9832caf 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -43,6 +43,11 @@ AC_ARG_ENABLE(udev,  AS_HELP_STRING([--enable-udev],
                                [Enable support for using udev instead of mknod (default: disabled)]),
                                [UDEV=$enableval], [UDEV=no])
 
+AC_ARG_ENABLE(intel,
+             AS_HELP_STRING([--disable-intel],
+             [Enable support for intel's KMS API (default: enabled)]),
+             [INTEL=$enableval], [INTEL=yes])
+
 AC_ARG_ENABLE(nouveau-experimental-api,
              AS_HELP_STRING([--enable-nouveau-experimental-api],
              [Enable support for nouveau's experimental API (default: disabled)]),
@@ -146,21 +151,25 @@ if test "x$HAVE_LIBUDEV" = xyes; then
 fi
 AM_CONDITIONAL(HAVE_LIBUDEV, [test "x$HAVE_LIBUDEV" = xyes])
 
-# Check for atomic intrinsics
-AC_CACHE_CHECK([for native atomic primitives], drm_cv_atomic_primitives,
-[
-       drm_cv_atomic_primitives="none"
-
-       AC_TRY_LINK([
-int atomic_add(int i) { return __sync_fetch_and_add (&i, 1); }
-int atomic_cmpxchg(int i, int j, int k) { return __sync_val_compare_and_swap (&i, j, k); }
-], [],
-         drm_cv_atomic_primitives="Intel"
-         )
-])
-if test "x$drm_cv_atomic_primitives" = xIntel; then
-       AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1,
-                 [Enable if your compiler supports the Intel __sync_* atomic primitives])
+AM_CONDITIONAL(HAVE_INTEL, [test "x$INTEL" = xyes])
+
+if test "x$INTEL" = xyes; then
+    # Check for atomic intrinsics
+    AC_CACHE_CHECK([for native atomic primitives], drm_cv_atomic_primitives,
+    [
+           drm_cv_atomic_primitives="none"
+
+           AC_TRY_LINK([
+    int atomic_add(int i) { return __sync_fetch_and_add (&i, 1); }
+    int atomic_cmpxchg(int i, int j, int k) { return __sync_val_compare_and_swap (&i, j, k); }
+    ], [],
+             drm_cv_atomic_primitives="Intel"
+             )
+    ])
+    if test "x$drm_cv_atomic_primitives" = xIntel; then
+           AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1,
+                     [Enable if your compiler supports the Intel __sync_* atomic primitives])
+    fi
 fi
 
 AC_SUBST(WARN_CFLAGS)

diff --git a/libdrm/Makefile.am b/libdrm/Makefile.am
index 0c07220..d13bead 100644 (file)
--- a/libdrm/Makefile.am
+++ b/libdrm/Makefile.am
@@ -18,6 +18,10 @@
 #  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+if HAVE_INTEL
+INTEL_SUBDIR = intel
+endif
+
 if HAVE_NOUVEAU
 NOUVEAU_SUBDIR = nouveau
 endif
@@ -26,7 +30,7 @@ if HAVE_RADEON
 RADEON_SUBDIR = radeon
 endif
 
-SUBDIRS = . intel $(NOUVEAU_SUBDIR) $(RADEON_SUBDIR)
+SUBDIRS = . $(INTEL_SUBDIR) $(NOUVEAU_SUBDIR) $(RADEON_SUBDIR)
 
 libdrm_la_LTLIBRARIES = libdrm.la
 libdrm_ladir = $(libdir)