catch2 only for test

readLib/CMakeLists.txt

@@ -7,7 +7,6 @@ add_library (CorsikaData STATIC ${files})
 target_link_libraries (CorsikaData
   PUBLIC
   CONAN_PKG::bzip2
-  CONAN_PKG::catch2
   )
 
 set_target_properties (
@@ -35,7 +34,7 @@ install (
 # add unit test, if run inside CORSIKA
 if (COMMAND CORSIKA_ADD_TEST)
   if (CORSIKA_DATA_WITH_TEST)
-    CORSIKA_ADD_TEST (testData SOURCES source/testData.cc)    
+    CORSIKA_ADD_TEST (testData SOURCES source/testData.cc)
     target_compile_definitions (
       testData
       PRIVATE
@@ -44,9 +43,9 @@ if (COMMAND CORSIKA_ADD_TEST)
   endif (CORSIKA_DATA_WITH_TEST)
 else (COMMAND CORSIKA_ADD_TEST)
   add_executable (testData source/testData.cc)
-  target_link_libraries (testData CorsikaData)
+  target_link_libraries (testData CorsikaData CONAN_PKG::catch2)
   target_compile_options (testData PRIVATE -g) # do not skip asserts
-  target_include_directories (testData PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_SOURCE_DIR}/readLib/externals/catch2)
+  target_include_directories (testData PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
   target_compile_definitions (
      testData
      PRIVATE