Update release string logic to check for git dir by default

cmake/set_release.cmake

@@ -0,0 +1,26 @@
+set(LATEST_RELEASE "2017-03-R2")
+
+execute_process(
+        COMMAND git log -n 1 --format=%h
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+        RESULT_VARIABLE GIT_EXIT_ERROR
+        ERROR_QUIET
+        OUTPUT_VARIABLE GIT_VERSION
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+if (GIT_EXIT_ERROR)
+	# We're probably not in a git repo
+	set(RELEASE ${LATEST_RELEASE})
+else (GIT_EXIT_ERROR)
+	# We're in a git repo
+	execute_process(
+		COMMAND git status -s --untracked-files=no
+		OUTPUT_VARIABLE DIRTY
+	)
+	if ( NOT "${DIRTY}" STREQUAL "" )
+		set(DIRTY_FLAG "*")
+	else()
+		set(DIRTY_FLAG "")
+	endif()
+        set(RELEASE "git-${GIT_VERSION}${DIRTY_FLAG}")
+endif (GIT_EXIT_ERROR)

lib/src/CMakeLists.txt

@@ -18,23 +18,9 @@
 #
 # Based slightly upon the hackrf cmake setup.
 
-# FIXME Set static release version here to avoid pulling from git
-set(RELEASE "")
-set(DIRTY_FLAG "")
-
-if ( "${RELEASE}" STREQUAL "" )
-	# automatic git version when working out of git
-	include(GetGitRevisionDescription)
-	get_git_head_revision(GIT_REFSPEC RELEASE)
-
-	execute_process(COMMAND git status -s --untracked-files=no OUTPUT_VARIABLE DIRTY)
-	if ( NOT "${DIRTY}" STREQUAL "" )
-		set(DIRTY_FLAG "*")
-	endif()
-endif()
-
-add_definitions( -DRELEASE="${RELEASE}${DIRTY_FLAG}" )
-message(STATUS "Setting version string ${RELEASE}${DIRTY_FLAG}")
+include(${PROJECT_SOURCE_DIR}/../cmake/set_release.cmake)
+add_definitions( -DRELEASE="${RELEASE}" )
+message(STATUS "Setting version string ${RELEASE}")
 
 # Source
 set(c_sources ${CMAKE_CURRENT_SOURCE_DIR}/bluetooth_packet.c