wrappers: divert between whole project and in-depth wrappers

wrappers/CMakeLists.txt

+# These two wrappers are used to gather in-depth information about the
+# hashing process. Using them does not yield proper timing information
+# about the overall compilation process.
 configure_file(clang-hash.in ${PROJECT_BINARY_DIR}/wrappers/clang-hash)
-configure_file(clang.in ${PROJECT_BINARY_DIR}/wrappers/clang)
+configure_file(clang-hash-collect.in ${PROJECT_BINARY_DIR}/wrappers/clang-hash-collect)
+
+# These wrappers can be used for the actual (re)compilation of whole procects.
+execute_process(
+  COMMAND "${CMAKE_COMMAND}" "-E" "create_symlink"
+    "${LLVM_C_COMPILER}" "${CMAKE_CURRENT_BINARY_DIR}/clang-normal"
+)
+
+configure_file(clang-hash-stop.in ${PROJECT_BINARY_DIR}/wrappers/clang-hash-stop)
+
 
 # Symlink compiler wrappers
 execute_process(

wrappers/clang-hash-stop.in

+#!/usr/bin/env bash
+
+# Wrapper for clang, that supports (only) fast hash-based
+# recompilation.
+
+printf -v ARGS "%q " "$@"
+
+${LLVM_C_COMPILER} -fplugin=${PROJECT_BINARY_DIR}/src/libclang-hash.so \
+                   -Xclang -plugin-arg-clang-hash -Xclang -stop-if-same-hash \
+                   $ARGS

wrappers/clang-hash.in

 #!/usr/bin/env bash
-
+# This wrapper script should be used, if you want to gather insight
+# information about the hashing process. It calls the given clang
+# compiler with our plugin and outputs the information on stderr.
 
 printf -v ARGS "%q " "$@"