cmake: add command polly-check-format

This command runs clang-format on all files and reports formatting problems

llvm-svn: 175170

polly/CMakeLists.txt

@@ -158,3 +158,8 @@ add_subdirectory(tools)
 configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/include/polly/Config/config.h.cmake
                 ${POLLY_BINARY_DIR}/include/polly/Config/config.h )
 
+# Add target to check formatting of polly files
+file( GLOB_RECURSE files *.h *.cpp)
+add_custom_command( OUTPUT formatting COMMAND
+  ${CMAKE_CURRENT_SOURCE_DIR}/utils/check_format.sh ${files})
+add_custom_target(polly-check-format ALL DEPENDS formatting)

polly/utils/check_format.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+OK=0
+
+for ARG in "$@"
+  do
+    clang-format $1 | diff $1 -
+
+    if [[ $? -eq 1 ]]; then
+      OK=1
+    fi
+  done
+
+if [[ $OK -eq "1" ]]; then
+  echo "Error: clang-format reported formatting differences"
+else
+  echo "OK: clang-format reported no formatting differences"
+fi
+