Just shove the version generation stuff directly into the CMake file

TerryCavanagh · Jul 11, 2024 · 1a9341c · 1a9341c
1 parent 32d0dc5
commit 1a9341c
Showing 1 changed file with 43 additions and 9 deletions.
diff --git a/desktop_version/CMakeLists.txt b/desktop_version/CMakeLists.txt
@@ -213,15 +213,49 @@ if(NOT OFFICIAL_BUILD)
     set(VERSION_INPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/src/InterimVersion.in.c)
     set(VERSION_OUTPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/src/InterimVersion.out.c)
 
-    add_custom_target(
-        GenerateVersion ALL
-        COMMAND ${CMAKE_COMMAND}
-        # These args have to be passed through, otherwise the script can't see them
-        # Also, these args have to come BEFORE `-P`! (Otherwise it fails with an unclear error)
-        -DINPUT_FILE=${VERSION_INPUT_FILE}
-        -DOUTPUT_FILE=${VERSION_OUTPUT_FILE}
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/version.cmake
-    )
+    set(INPUT_FILE "${VERSION_INPUT_FILE}")
+    set(OUTPUT_FILE "${VERSION_OUTPUT_FILE}")
+
+    # find_package sets GIT_FOUND and GIT_EXECUTABLE
+    find_package(Git)
+
+    if(GIT_FOUND)
+        # Get interim commit and date of commit
+        execute_process(
+            COMMAND "${GIT_EXECUTABLE}" log -1 --format=%h
+            OUTPUT_VARIABLE INTERIM_COMMIT
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+        execute_process(
+            COMMAND "${GIT_EXECUTABLE}" log -1 --format=%cd --date=short
+            OUTPUT_VARIABLE COMMIT_DATE
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+
+        execute_process(
+            COMMAND "${GIT_EXECUTABLE}" branch --show-current
+            OUTPUT_VARIABLE BRANCH_NAME
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+    endif()
+
+    # Defaults if we don't have git or its commands fail for any reason or give blanks
+    # For annoying CMake reasons, must use "${VAR}" syntax rather than VAR
+    if("${INTERIM_COMMIT}" STREQUAL "")
+        set(INTERIM_COMMIT "(commit?)")
+    endif()
+    if("${COMMIT_DATE}" STREQUAL "")
+        set(COMMIT_DATE "(date?)")
+    endif()
+    if("${BRANCH_NAME}" STREQUAL "")
+        set(BRANCH_NAME "(branch?)")
+    endif()
+
+    message(STATUS "This is interim commit ${INTERIM_COMMIT} (committed ${COMMIT_DATE}) on branch ${BRANCH_NAME}")
+
+    # Take the template file and replace the macros with what we have
+    configure_file(${INPUT_FILE} ${OUTPUT_FILE})
 
     add_dependencies(VVVVVV GenerateVersion)