cmake: add dist target

Signed-off-by: Janusz Jankowski <[email protected]>

CMakeLists.txt

@@ -87,6 +87,8 @@ set(VERSION_H_PATH ${GENERATED_DIRECTORY}/include/version.h)
 include(scripts/cmake/version.cmake)
 sof_add_version_h_rule(${PROJECT_SOURCE_DIR}/scripts/cmake/version.cmake)
 
+include(scripts/cmake/dist.cmake)
+
 include(scripts/cmake/defconfigs.cmake)
 
 # cmake itself cannot depend on files that don't exist

scripts/cmake/dist.cmake

@@ -0,0 +1,19 @@
+# depends on version.cmake
+# Adds dist target
+
+set(TARBALL_PATH_TMP "${PROJECT_BINARY_DIR}/sof-${GIT_TAG}.tar")
+set(TARBALL_PATH "${PROJECT_BINARY_DIR}/sof-${GIT_TAG}.tgz")
+set(TARBALL_VERSION_BINARY_PATH "${PROJECT_BINARY_DIR}/${TARBALL_VERSION_FILE_NAME}")
+
+add_custom_target(dist
+	COMMAND git archive -o "${TARBALL_PATH_TMP}" HEAD
+	COMMAND ${CMAKE_COMMAND} -E echo "${GIT_TAG}" > "${TARBALL_VERSION_BINARY_PATH}"
+	COMMAND ${CMAKE_COMMAND} -E echo "${GIT_LOG_HASH}" >> "${TARBALL_VERSION_BINARY_PATH}"
+	COMMAND tar rf "${TARBALL_PATH_TMP}" -C "${PROJECT_BINARY_DIR}" "${TARBALL_VERSION_FILE_NAME}"
+	COMMAND gzip -9 < "${TARBALL_PATH_TMP}" > "${TARBALL_PATH}"
+	WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
+	COMMENT "Creating tarball: ${TARBALL_PATH}"
+	BYPRODUCTS "$TARBALL_VERSION_BINARY_PATH" "${TARBALL_PATH_TMP}" "${TARBALL_PATH}"
+	VERBATIM
+	USES_TERMINAL
+)

scripts/cmake/version.cmake

@@ -1,16 +1,27 @@
 cmake_minimum_required(VERSION 3.10)
 
-execute_process(COMMAND git describe --abbrev=4
-	OUTPUT_VARIABLE GIT_TAG
-	OUTPUT_STRIP_TRAILING_WHITESPACE
-	ERROR_QUIET
-)
+set(TARBALL_VERSION_FILE_NAME ".tarball-version")
+set(TARBALL_VERSION_SOURCE_PATH "${PROJECT_SOURCE_DIR}/${TARBALL_VERSION_FILE_NAME}")
 
-execute_process(COMMAND git log --pretty=format:%h -1
-	OUTPUT_VARIABLE GIT_LOG_HASH
-	OUTPUT_STRIP_TRAILING_WHITESPACE
-	ERROR_QUIET
-)
+if(EXISTS ${TARBALL_VERSION_SOURCE_PATH})
+	file(STRINGS ${TARBALL_VERSION_SOURCE_PATH} lines ENCODING "UTF-8")
+	list(GET lines 0 GIT_TAG)
+	list(GET lines 1 GIT_LOG_HASH)
+	message(STATUS "Found ${TARBALL_VERSION_FILE_NAME}")
+	message(STATUS "Version: ${GIT_TAG} / ${GIT_LOG_HASH}")
+else()
+	execute_process(COMMAND git describe --abbrev=4
+		OUTPUT_VARIABLE GIT_TAG
+		OUTPUT_STRIP_TRAILING_WHITESPACE
+		ERROR_QUIET
+	)
+
+	execute_process(COMMAND git log --pretty=format:%h -1
+		OUTPUT_VARIABLE GIT_LOG_HASH
+		OUTPUT_STRIP_TRAILING_WHITESPACE
+		ERROR_QUIET
+	)
+endif()
 
 if(NOT GIT_TAG MATCHES "^v")
 	set(GIT_TAG "v0.0-0-g0000")