Add wraper Makefile which calls CMake

Author: kmurray

Makefile

@@ -0,0 +1,68 @@
+#This is a simple wrapper hiding cmake from non-expert end users.
+#
+# It supports the targets:
+#   'make'           - builds everything (all libaries/executables)
+#   'make clean'     - removes generated build objects/libraries/executables etc.
+#   'make distclean' - will clean everything including the cmake generated build files
+#
+# All other targets (e.g. 'make tatum_test') are passed to the cmake generated makefile
+# and processed according to the CMakeLists.txt.
+#
+# To perform a debug build use:
+#   'make BUILD_TYPE=debug'
+
+#Default build type
+# Possible values:
+#    release
+#    debug
+BUILD_TYPE = release
+
+#Allows users to pass parameters to cmake
+#  e.g. make CMAKE_PARAMS="-DVTR_ENABLE_SANITIZE=true"
+override CMAKE_PARAMS := -DCMAKE_BUILD_TYPE=$(BUILD_TYPE) -G 'Unix Makefiles' ${CMAKE_PARAMS}
+
+
+# -s : Suppresss makefile output (e.g. entering/leaving directories)
+# --output-sync target : For parallel compilation ensure output for each target is synchronized (make version >= 4.0)
+MAKEFLAGS := -s
+
+BUILD_DIR=./build
+GENERATED_MAKEFILE := $(BUILD_DIR)/Makefile
+
+#Check for the cmake exectuable
+CMAKE := $(shell command -v cmake 2> /dev/null)
+
+#Show test log on failures with 'make test'
+export CTEST_OUTPUT_ON_FAILURE=TRUE
+
+#All targets in this make file are always out of date.
+# This ensures that any make target requests are forwarded to
+# the generated makefile
+.PHONY: all distclean $(GENERATED_MAKEFILE) $(MAKECMDGOALS)
+
+#Build everything
+all: $(GENERATED_MAKEFILE)
+	@+$(MAKE) -C $(BUILD_DIR)
+
+#Call the generated Makefile's clean, and then remove all cmake generated files
+distclean: $(GENERATED_MAKEFILE)
+	@ echo "Cleaning build..."
+	@+$(MAKE) -C $(BUILD_DIR) clean 
+	@ echo "Removing build system files.."
+	@ rm -rf $(BUILD_DIR)
+	@ rm -rf CMakeFiles CMakeCache.txt #In case 'cmake .' was run in the source directory
+
+#Call cmake to generate the main Makefile
+$(GENERATED_MAKEFILE):
+ifeq ($(CMAKE),)
+	$(error Required 'cmake' executable not found. On debian/ubuntu try 'sudo apt-get install cmake' to install)
+endif
+	@ mkdir -p $(BUILD_DIR)
+	echo "cd $(BUILD_DIR) && $(CMAKE) $(CMAKE_PARAMS) .. "
+	cd $(BUILD_DIR) && $(CMAKE) $(CMAKE_PARAMS) .. 
+
+#Forward any targets that are not named 'distclean' to the generated Makefile
+ifneq ($(MAKECMDGOALS),distclean)
+$(MAKECMDGOALS): $(GENERATED_MAKEFILE)
+	@+$(MAKE) -C $(BUILD_DIR) $(MAKECMDGOALS)
+endif