Add an option to simplify the version number to reduce building time

CMakeLists.txt

@@ -18,6 +18,7 @@ gd_set_option(BUILD_IDE TRUE BOOL "TRUE to build the IDE")
 gd_set_option(BUILD_EXTENSIONS TRUE BOOL "TRUE to build the extensions")
 gd_set_option(BUILD_TESTS FALSE BOOL "TRUE to build the tests")
 gd_set_option(NO_GUI FALSE BOOL "TRUE to build without wxWidgets GUI")
+gd_set_option(FULL_VERSION_NUMBER TRUE BOOL "TRUE to build GDevelop with its full version number (lastest tag + commit hash), FALSE to only use the lastest tag (avoid rebulding many source file when developping)")
 
 #Setting up installation directory, for Linux (has to be done before "project" command).
 IF(NOT WIN32)

Version/CMakeLists.txt

@@ -3,7 +3,13 @@ cmake_policy(SET CMP0015 NEW)
 
 project(GDVersion)
 
+if(FULL_VERSION_NUMBER)
+	set(GENERATE_VERSION_SCRIPT ${PROJECT_SOURCE_DIR}/GenerateVersionFull.cmake)
+else()
+	set(GENERATE_VERSION_SCRIPT ${PROJECT_SOURCE_DIR}/GenerateVersionLazy.cmake)
+endif()
+
 add_custom_target(GDVersion
 	ALL
-	COMMAND ${CMAKE_COMMAND} -P ${PROJECT_SOURCE_DIR}/GenerateVersion.cmake ${PROJECT_SOURCE_DIR}/../Core/GDCore/Tools/
+	COMMAND ${CMAKE_COMMAND} -P ${GENERATE_VERSION_SCRIPT} ${PROJECT_SOURCE_DIR}/../Core/GDCore/Tools/
 )

Version/GenerateVersionLazy.cmake

@@ -0,0 +1,54 @@
+find_package(Git)
+
+message(WARNING "You're not using the full version number. It's not suitable for public releases and builds!")
+
+if(GIT_FOUND)
+	EXECUTE_PROCESS(
+       		COMMAND ${GIT_EXECUTABLE} describe --tags --abbrev=0 # Only get the lastest tag's name
+       		OUTPUT_VARIABLE GD_VERSION_STR
+       		RESULT_VARIABLE GIT_DESCRIBE_RESULT
+       		ERROR_VARIABLE GIT_DESCRIBE_ERROR
+       		OUTPUT_STRIP_TRAILING_WHITESPACE
+   	)
+
+	set(VERSIONPRIV_PATH "${CMAKE_ARGV3}/VersionPriv.h")
+	set(ORIGINAL_CONTENT " ")
+
+	if(EXISTS "${VERSIONPRIV_PATH}")
+		file(READ "${VERSIONPRIV_PATH}" ORIGINAL_CONTENT)
+	endif()
+
+	if("${GD_VERSION_STR}" STREQUAL "")
+		message(STATUS "No tags found to determine the version of GDevelop!")
+		set(GD_VERSION_STR "0.0.0")
+	endif()
+
+	# Generate the version RC macro
+	string(REGEX REPLACE
+		"([0-9]*)\\.([0-9]*)\\.([0-9]*)"
+		"\\1,\\2,\\3,0"
+		GD_VERSION_RC
+		"${GD_VERSION_STR}")
+
+	string(REGEX REPLACE
+		"([0-9]*)\\.([0-9]*)\\.([0-9]*)"
+		"\\1, \\2, \\3, 0"
+		GD_VERSION_RC_STR
+		"${GD_VERSION_STR}")
+
+	set(NEW_CONTENT "#define GD_VERSION_STRING \"${GD_VERSION_STR}\"\n#define GD_VERSION_RC ${GD_VERSION_RC}\n#define GD_VERSION_RC_STRING \"${GD_VERSION_RC_STR}\\0\"\n#define GD_DATE_STRING __DATE__")
+
+	if(NOT ("${ORIGINAL_CONTENT}" STREQUAL "${NEW_CONTENT}"))
+		# Write only the version file if different from the previous one
+		message(STATUS "Updating VersionPriv.h header to version ${GD_VERSION_STR}.")
+		file(WRITE
+			"${VERSIONPRIV_PATH}"
+			"${NEW_CONTENT}")
+	else()
+		message(STATUS "VersionPriv.h already up-to-date.")
+	endif()
+else()
+	file(WRITE
+		"${VERSIONPRIV_PATH}"
+	"#define GD_VERSION_STRING \"0.0.0-0-unknown\"\n#define GD_VERSION_RC 0, 0, 0, 0\n#define GD_VERSION_RC_STRING \"0, 0, 0, 0\\0\"\n#define GD_DATE_STRING __DATE__")
+endif()