Merge from bittboy/buildroot@db180c0

package/openal/Config.in

@@ -0,0 +1,32 @@
+# openal can:
+# - use __atomic_*() intrinsics when available
+# - otherwise use __sync_*() intrinsics when available. It needs the
+#   4-byte ones on 32 bits architectures, and the 4-byte and 8-byte
+#   one on 64 bits architecture
+# - it also provides its one implementation of atomic operations on
+#   x86 and x86_64, but we dont take those into account since in most
+#   situations __atomic_*() or __sync_*() will be available, and not
+#   all x86 CPUs provide the necessary assembly instructions.
+config BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
+	bool
+	default y if BR2_TOOLCHAIN_HAS_ATOMIC
+	default y if BR2_TOOLCHAIN_HAS_SYNC_4 && !BR2_ARCH_IS_64
+	default y if BR2_TOOLCHAIN_HAS_SYNC_4 && BR2_TOOLCHAIN_HAS_SYNC_8 && BR2_ARCH_IS_64
+
+config BR2_PACKAGE_OPENAL
+	bool "openal"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	depends on BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
+	help
+	  OpenAL provides capabilities for playing audio in a virtual
+	  3D environment. Distance attenuation, doppler shift, and
+	  directional sound emitters are among the features handled by
+	  the API.
+
+	  http://kcat.strangesoft.net/openal.html
+
+comment "openal needs a toolchain w/ NPTL, C++"
+	depends on BR2_PACKAGE_OPENAL_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL \
+		|| !BR2_INSTALL_LIBSTDCPP