gflags: new package

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Reviewed-by: Abhimanyu Vishwakarma <abhimanyu.v@imgtec.com>
Reviewed-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -1015,6 +1015,7 @@ menu "Other"
 	source "package/elfutils/Config.in"
 	source "package/fftw/Config.in"
 	source "package/flann/Config.in"
+	source "package/gflags/Config.in"
 	source "package/glibmm/Config.in"
 	source "package/glm/Config.in"
 	source "package/gmp/Config.in"

package/gflags/Config.in

@@ -0,0 +1,13 @@
+config BR2_PACKAGE_GFLAGS
+	bool "gflags"
+	depends on BR2_INSTALL_LIBSTDCPP
+	help
+	  The gflags package contains a C++ library that implements
+	  commandline flags processing. It includes built-in support for
+	  standard types such as string and the ability to define flags
+	  in the source file in which they are used.
+
+	  https://github.com/gflags/gflags
+
+comment "gflags needs a toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP

package/gflags/gflags.hash

@@ -0,0 +1,2 @@
+# No hash for v2.1.2, comes from the github-helper:
+none	xxx	gflags-v2.1.2.tar.gz

package/gflags/gflags.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# gflags
+#
+################################################################################
+
+GFLAGS_VERSION = v2.1.2
+GFLAGS_SITE = $(call github,gflags,gflags,$(GFLAGS_VERSION))
+GFLAGS_INSTALL_STAGING = YES
+GFLAGS_LICENSE = BSD-3c
+GFLAGS_LICENSE_FILES = COPYING.txt
+
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),)
+GFLAGS_CONF_OPTS = -DBUILD_gflags_LIB=OFF
+endif
+
+$(eval $(cmake-package))