Revert "adjust for macos"

This reverts commit 216793fe.

CMakeModules/astyle.cmake

 find_program(ASTYLE_EXECUTABLE astyle)
 
+add_custom_target(ASTYLE)
+
 if(ASTYLE_EXECUTABLE)
 	message(STATUS "Found astyle, using astyle to format code of target ${target}.")
 	add_custom_target(astyle ALL

CMakeModules/testing_cpp.cmake

@@ -16,10 +16,9 @@ function(gtest target test_source_files test_libraries)
 
         message(STATUS "Added test 'test-${target}'")
 
-        if ((CMAKE_COMPILER_IS_GNUCXX) OR ("${CMAKE_CXX_COMPILER_ID}" MATCHES "(Apple)?[Cc]lang"))
+        if (CMAKE_COMPILER_IS_GNUCXX)
             include(CodeCoverage)
             APPEND_COVERAGE_COMPILER_FLAGS()
-            set (COVERAGE_EXCLUDES '*/unittests/*')
             SETUP_TARGET_FOR_COVERAGE(NAME coverage-${target} EXECUTABLE test-${target} ${target})
             add_test(NAME coveragetest-${target}
                     COMMAND ${CMAKE_MODULE_PATH}/check_test.sh