ssrf: add makefile at ssrf level

add makefile at ssrf level to ease make calls
it can be called as:
make
make all
- will generate both desktop and mobile
make mobile
- will mobile
make
- will generate desktop

Signed-off-by: Jan Iversen <jani@apache.org>

makefile

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# Default target executed when no arguments are given to make.
+default_target: all
+
+.PHONY : default_target
+
+# Allow only one "make -f <foo>" at a time, but pass parallelism.
+.NOTPARALLEL:
+
+
+mobile:
+	if test ! -d build-mobile; then (echo "error: please run build.sh before make"; exit -1;); fi
+	cd build-mobile; LIBRARY_PATH=../install_root/lib make 
+	cd build-mobile; LIBRARY_PATH=../install_root/lib make install
+
+desktop:
+	if test ! -d build; then (echo "error: please run build.sh before make"; exit -1;); fi
+	cd build; LIBRARY_PATH=../install_root/lib make 
+	cd build; LIBRARY_PATH=../install_root/lib make install
+
+all: desktop mobile