Xcode build: use the same files as the CMake build for versioning

Closes #4671.

build_tools/xcode_version_gen.sh

@@ -2,16 +2,11 @@
 # Expects to be called from Xcode (Run Script build phase),
 # write version number C preprocessor macro to header file.
 
-tmp="$SCRIPT_OUTPUT_FILE_1"
 ver="$SCRIPT_OUTPUT_FILE_0"
 
 ./build_tools/git_version_gen.sh
 
-cat FISH-BUILD-VERSION-FILE | awk -F= '{printf("#define %s \"%s\"\n",$1,$2)}' > "$tmp"
-
-cmp --quiet "$tmp" "$ver"
+cmp --quiet "FISH-BUILD-VERSION-FILE" "$ver"
 if [ $? -ne 0 ]; then
-    /bin/mv "$tmp" "$ver"
-else
-    /bin/rm "$tmp"
+    /bin/cp FISH-BUILD-VERSION-FILE "$ver"
 fi

fish.xcodeproj/project.pbxproj

@@ -1534,8 +1534,7 @@
 			inputPaths = (
 			);
 			outputPaths = (
-				"$(SHARED_DERIVED_FILE_DIR)/fish-build-version.h",
-				"$(SHARED_DERIVED_FILE_DIR)/force-fish-build-version.h",
+				"$(SHARED_DERIVED_FILE_DIR)/FISH-BUILD-VERSION-FILE",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;