Merge branch 'compile_speedup' of https://git.scc.kit.edu/rtsn/rtsn into compile_speedup

Former-commit-id: 47cf001f

code/CMakeLists.txt

 cmake_minimum_required( VERSION 3.12.4 )
 project( KiT-RT VERSION 0.1.0 LANGUAGES CXX )
 
+### OPTIONS #####################################
+option( build_tests "enables compiling of unit_tests" OFF )
+#################################################
 
 ### COMPILER ####################################
 set( CMAKE_CXX_STANDARD 17 )
@@ -81,26 +84,27 @@ target_compile_options( ${CMAKE_PROJECT_NAME} PUBLIC "$<$<CONFIG:RELEASE>:${KITR
 
 
 ### BUILD UNIT TESTS ############################
-include( CTest )
-set( CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/ext/Catch2/contrib ${CMAKE_MODULE_PATH} )
-include( Catch )
-set( CATCH_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/ext/Catch2/single_include/catch2 )
-add_compile_definitions( BUILD_TESTING )
-add_compile_definitions( TESTS_PATH="${CMAKE_SOURCE_DIR}/tests/" )
-add_library( Catch INTERFACE )
-target_include_directories( Catch INTERFACE ${CATCH_INCLUDE_DIR} )
-file( GLOB_RECURSE TEST_SRCS RELATIVE ${CMAKE_SOURCE_DIR} "tests/*.cpp" )
-list( REMOVE_ITEM SRCS "src/main.cpp" )
-add_executable( unit_tests ${TEST_SRCS} ${SRCS} ${EXT_SRCS} )
-target_link_libraries( unit_tests Catch ${CORE_LIBRARIES} )
-target_compile_options( unit_tests PUBLIC "$<$<CONFIG:DEBUG>:${KITRT_DEBUG_OPTIONS}>" )
-if( CMAKE_COMPILER_IS_GNUCXX )
+if( build_tests )
+    include( CTest )
+    set( CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/ext/Catch2/contrib ${CMAKE_MODULE_PATH} )
+    include( Catch )
+    set( CATCH_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/ext/Catch2/single_include/catch2 )
+    add_compile_definitions( BUILD_TESTING )
+    add_compile_definitions( TESTS_PATH="${CMAKE_SOURCE_DIR}/tests/" )
+    add_library( Catch INTERFACE )
+    target_include_directories( Catch INTERFACE ${CATCH_INCLUDE_DIR} )
+    file( GLOB_RECURSE TEST_SRCS RELATIVE ${CMAKE_SOURCE_DIR} "tests/*.cpp" )
+    list( REMOVE_ITEM SRCS "src/main.cpp" )
+    add_executable( unit_tests ${TEST_SRCS} ${SRCS} ${EXT_SRCS} )
+    target_link_libraries( unit_tests Catch ${CORE_LIBRARIES} )
+    target_compile_options( unit_tests PUBLIC "$<$<CONFIG:DEBUG>:${KITRT_DEBUG_OPTIONS}>" )
+    if( CMAKE_COMPILER_IS_GNUCXX )
         set( CODE_COVERAGE_OPTIONS --coverage -g -O0 -w )
         target_compile_options( unit_tests PUBLIC "$<$<CONFIG:DEBUG>:${CODE_COVERAGE_OPTIONS}>" )
         target_link_libraries( unit_tests Catch gcov )
+    endif()
+    target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELWITHDEBINFO>:${KITRT_RELWITHDEBINFO_OPTIONS}>" )
+    target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELEASE>:${KITRT_RELEASE_OPTIONS}>" )
+    catch_discover_tests( unit_tests )
 endif()
-target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELWITHDEBINFO>:${KITRT_RELWITHDEBINFO_OPTIONS}>" )
-target_compile_options( unit_tests PUBLIC "$<$<CONFIG:RELEASE>:${KITRT_RELEASE_OPTIONS}>" )
-catch_discover_tests( unit_tests )
-enable_testing()
 #################################################