git forgot a file

Author: grynspan

cmake/modules/GitCommit.cmake

@@ -0,0 +1,35 @@
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2024–2025 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for Swift project authors
+
+find_package(Git QUIET)
+if(Git_FOUND)
+  # Get the commit hash corresponding to the current build.
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} rev-parse --verify HEAD
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+    OUTPUT_VARIABLE SWT_TESTING_LIBRARY_COMMIT_HASH
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    ERROR_QUIET)
+
+  # Check if there are local changes.
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} status -s
+    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+    OUTPUT_VARIABLE SWT_TESTING_LIBRARY_COMMIT_MODIFIED
+    OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+
+if(SWT_TESTING_LIBRARY_COMMIT_HASH)
+  message(STATUS "Swift Testing commit hash: ${SWT_TESTING_LIBRARY_COMMIT_HASH}")
+  add_compile_definitions(
+    "$<$<COMPILE_LANGUAGE:CXX>:SWT_TESTING_LIBRARY_COMMIT_HASH=\"${SWT_TESTING_LIBRARY_COMMIT_HASH}\">")
+  if(SWT_TESTING_LIBRARY_COMMIT_MODIFIED)
+    add_compile_definitions(
+      "$<$<COMPILE_LANGUAGE:CXX>:SWT_TESTING_LIBRARY_COMMIT_MODIFIED=1>")
+  endif()
+endif()