added diagnostic messages

tests/CMakeLists.txt

@@ -26,14 +26,19 @@ add_executable(test_bitview test_bitview.cpp $<TARGET_OBJECTS:catcho>)
 target_include_directories(test_bitview PRIVATE ${CATCH2_HEADER_PATH} ${COMPASS_INCLUDE_BUILD_DIR} )
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+  if(NOT "${COMPILES_WITH_NO_EXTRAL}")
+    message(STATUS "detected malacious support of libc++/libstdc++")
 
-  if(NOT COMPILES_WITH_NO_EXTRAL)
     if(${COMPILES_WITH_LIBCXX})
+      message(STATUS "adding c++ c++abi to test binary dependencies")
+
       target_link_libraries(test_compass_impl c++ c++abi)
       target_link_libraries(test_bitview c++ c++abi)
     else()
 
       if(${COMPILES_WITH_LIBSTDCXX})
+        message(STATUS "adding stdc++ to test binary dependencies")
+
         target_link_libraries(test_compass_impl stdc++)
         target_link_libraries(test_bitview stdc++)
       endif()
@@ -56,7 +61,7 @@ if(${CURRENT_HOSTNAME} MATCHES ".*(falcon2|talisker|schorle|scicomp-pc-3|recover
   add_executable(test_compass_sizes test_compass_sizes.cpp $<TARGET_OBJECTS:catcho>)
   target_include_directories(test_compass_sizes PRIVATE ${CATCH2_HEADER_PATH} ${COMPASS_INCLUDE_BUILD_DIR})
 
-  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND NOT COMPILES_WITH_NO_EXTRAL)
+  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND NOT "${COMPILES_WITH_NO_EXTRAL}")
     if(${COMPILES_WITH_LIBCXX})
       target_link_libraries(test_compass_sizes c++ c++abi)
       target_link_libraries(test_machine c++ c++abi)