Added warning (ROOT-8546)

cmake/modules/RootNewMacros.cmake

@@ -728,7 +728,6 @@ function(ROOT_INSTALL_HEADERS)
   set (filter "(${filter})")
   string(REPLACE ${CMAKE_SOURCE_DIR} "" tgt ${CMAKE_CURRENT_SOURCE_DIR})
   string(MAKE_C_IDENTIFIER move_header${tgt} tgt)
-  #add_custom_target(${tgt})
   set_property(GLOBAL APPEND PROPERTY ROOT_HEADER_TARGETS ${tgt})
   foreach(d ${dirs})
     install(DIRECTORY ${d} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}

interpreter/CMakeLists.txt

@@ -84,6 +84,10 @@ endif(cxxmodules)
 if(NOT DEFINED LLVM_BUILD_TYPE)
   set(LLVM_BUILD_TYPE Release CACHE STRING "Build type for LLVM (used to set CMAKE_BUILD_TYPE)")
 endif()
+if( CMAKE_BUILD_TYPE STREQUAL "Debug" AND NOT LLVM_BUILD_TYPE STREQUAL "Debug")
+  message(WARNING "Selected a 'Debug' build (CMAKE_BUILD_TYPE), be aware that the embedded LLVM will still be built as 'Release'."
+                  " Use the variable LLVM_BUILD_TYPE to control it.")
+endif()
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
   set(LLVM_ENABLE_ASSERTIONS "YES")
 else()