patched code coverage issue with unity build

Former-commit-id: 79cb2b7f

code/CMakeLists.txt

@@ -16,7 +16,8 @@ set( CMAKE_CXX_STANDARD_REQUIRED ON )
 set( KITRT_RELEASE_OPTIONS -march=native -w )
 set( KITRT_RELWITHDEBINFO_OPTIONS -march=native -pg -no-pie )
 set( KITRT_DEBUG_OPTIONS -Wall -Wextra -Wpedantic )
-if( BUILD_UNITY AND NOT CODE_COV )
+if( BUILD_UNITY AND NOT BUILD_CODE_COV )
+    message( STATUS "Unity build enabled" )
     set( CMAKE_UNITY_BUILD ON )
     set( CMAKE_UNITY_BUILD_BATCH_SIZE 0 )
 endif()
@@ -117,6 +118,8 @@ if( BUILD_TESTING )
         else()
             message( FATAL_ERROR "Code coverage is currently only supported for gcc!" )
         endif()
+    else()
+        target_link_libraries( unit_tests Catch )
     endif()
     target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELWITHDEBINFO>:${KITRT_RELWITHDEBINFO_OPTIONS}>" )
     target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELEASE>:${KITRT_RELEASE_OPTIONS}>" )