Add FlameGraph sources in rootbench project

Author: oshadura

CMakeLists.txt

@@ -53,6 +53,10 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
 endif()
 
 include(GoogleBenchmark)
+if(flamegraph)
+  include(FlameGraph)
+  add_custom_target(flamegraph-download DEPENDS FlameGraph)
+endif()
 
 #---Add ROOT include direcories and used compilation flags
 include_directories(${ROOT_INCLUDE_DIRS})

cmake/modules/FlameGraph.cmake

@@ -0,0 +1,11 @@
+include(ExternalProject)
+
+ExternalProject_Add(FlameGraph
+	GIT_REPOSITORY "https://github.com/brendangregg/FlameGraph.git"
+	UPDATE_COMMAND ""
+	PATCH_COMMAND ""
+	CONFIGURE_COMMAND ""
+	BUILD_COMMAND ""
+	INSTALL_COMMAND ""
+	EXCLUDE_FROM_ALL 1
+)