Compile time flag to switch between #warning and #error message

Using backward compatibility paths will provide an #error message. Compile time option added to enable/disable the #error message.
Disabling the same will provide a #warning message

Change-Id: Ib48e361b72176e2845c8f74f980f0234e7eb4a7d

runtime/hsa-runtime/CMakeLists.txt

@@ -312,6 +312,21 @@ install ( DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/inc/ DESTINATION ${CMAKE_INSTALL
 # Option to build header path migration helpers.
 option(INCLUDE_PATH_COMPATIBILITY "Generate backward compatible headers and include paths.  Use of these headers will warn when included." ON)
 if(INCLUDE_PATH_COMPATIBILITY)
+# To enable/disable #error in wrapper header files
+  if(NOT DEFINED ROCM_HEADER_WRAPPER_WERROR)
+      if(DEFINED ENV{ROCM_HEADER_WRAPPER_WERROR})
+          set(ROCM_HEADER_WRAPPER_WERROR "$ENV{ROCM_HEADER_WRAPPER_WERROR}"
+                  CACHE STRING "Header wrapper warnings as errors.")
+      else()
+          set(ROCM_HEADER_WRAPPER_WERROR "ON" CACHE STRING "Header wrapper warnings as errors.")
+      endif()
+  endif()
+  if(ROCM_HEADER_WRAPPER_WERROR)
+      set(deprecated_error 1)
+  else()
+      set(deprecated_error 0)
+  endif()
+
   include(hsa-backward-compat.cmake)
   target_include_directories( ${CORE_RUNTIME_TARGET}
     PUBLIC

runtime/hsa-runtime/hsa-backward-compat.cmake

@@ -48,7 +48,18 @@ function(create_header_template)
 #ifndef @include_guard@
 #define @include_guard@
 
+#ifndef ROCM_HEADER_WRAPPER_WERROR
+#define ROCM_HEADER_WRAPPER_WERROR @deprecated_error@
+#endif
+#if ROCM_HEADER_WRAPPER_WERROR  /* ROCM_HEADER_WRAPPER_WERROR 1 */
 #error \"@file_name@ has moved to @CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@/hsa and package include paths have changed.\\nInclude as \\\"hsa/@file_name@\\\" when using cmake packages.\"
+#else  /* ROCM_HEADER_WRAPPER_WERROR 0 */
+#if defined(__GNUC__)
+#warning \"@file_name@ has moved to @CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@/hsa and package include paths have changed.\\nInclude as \\\"hsa/@file_name@\\\" when using cmake packages.\"
+#else
+#pragma message(\"@file_name@ has moved to @CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@/hsa and package include paths have changed.\\nInclude as \\\"hsa/@file_name@\\\" when using cmake packages.\")
+#endif
+#endif  /* ROCM_HEADER_WRAPPER_WERROR */
 @include_statements@
 
 #endif")