Merge from bittboy/buildroot@db180c0

package/glog/glog.mk

@@ -0,0 +1,28 @@
+################################################################################
+#
+# glog
+#
+################################################################################
+
+GLOG_VERSION = 0.3.5
+GLOG_SITE = $(call github,google,glog,v$(GLOG_VERSION))
+GLOG_INSTALL_STAGING = YES
+GLOG_LICENSE = BSD-3-Clause
+GLOG_LICENSE_FILES = COPYING
+
+ifeq ($(BR2_PACKAGE_GFLAGS),y)
+GLOG_DEPENDENCIES = gflags
+endif
+
+# glog can optionally use atomic __sync built-ins. However, its
+# configure script only checks for the availability of the 4 bytes
+# version, but the code also uses the 1 byte version. While this works
+# on most architectures, it does not on architectures that implement
+# only the 4 bytes version, such as Microblaze. So if the architecture
+# does not implement the 1 byte version, we hint the configure script
+# that atomic built-ins should not be used.
+ifeq ($(BR2_TOOLCHAIN_HAS_SYNC_1),)
+GLOG_CONF_ENV += ac_cv___sync_val_compare_and_swap=no
+endif
+
+$(eval $(autotools-package))