Allow usage of dune-perftool form downstream modules

cmake/modules/DunePerftoolMacros.cmake

@@ -65,6 +65,7 @@ if(CMAKE_PROJECT_NAME STREQUAL dune-perftool)
   set(UFL2PDELAB_GLOB_PATTERN "${CMAKE_SOURCE_DIR}/python/*.py")
 else()
   # TODO: How do we get to the source here???
+  message(WARNING "You are using dune-perftool from a downstream module. This may cause insufficient retriggers of code generation")
 endif()
 file(GLOB_RECURSE UFL2PDELAB_SOURCES ${UFL2PDELAB_GLOB_PATTERN})
 
@@ -106,7 +107,10 @@ function(add_generated_executable)
   endif()
 
   # Write a standard main function
-  configure_file(${CMAKE_SOURCE_DIR}/cmake/modules/StandardMain.cmake ${GEN_MAIN})
+  dune_module_path(MODULE dune-perftool
+                   RESULT perftool_path
+                   CMAKE_MODULES)
+  configure_file(${perftool_path}/StandardMain.cmake ${GEN_MAIN})
 
   add_custom_command(OUTPUT ${GEN_OPERATOR} ${GEN_DRIVER}
                      COMMAND ${CMAKE_BINARY_DIR}/run-in-dune-env ufl2pdelab
@@ -115,7 +119,7 @@ function(add_generated_executable)
                              --driver-file ${GEN_DRIVER}
                              ${GEN_FORM_COMPILER_ARGS}
                              --uflfile ${GEN_UFLFILE}
-                     DEPENDS ${GEN_UFLFILE} ${UFL2PDELAB_SOURCES} ${GEN_DEPENDS}
+                     DEPENDS ${GEN_UFLFILE} ${UFL2PDELAB_SOURCES} ${GEN_DEPENDS} ${DUNE_PERFTOOL_ADDITIONAL_PYTHON_SOURCES}
                      COMMENT "Running ufl2pdelab for the target ${GEN_TARGET}"
                     )