fix build without testing

CMakeLists.txt

@@ -10,9 +10,7 @@ set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/CMakeModules/)
 
 include(astyle)
 
-if(BUILD_TESTS)
-	include(testing_cpp)
-endif()
+include(testing_cpp)
 
 add_subdirectory(producer/api)
 add_subdirectory(common/cpp)

CMakeModules/testing_cpp.cmake

-enable_testing()
-set (HIDRA2_MINIMUM_COVERAGE 70)
-
-find_package (Threads)
+if(BUILD_TESTS)
+	enable_testing()
+	set (HIDRA2_MINIMUM_COVERAGE 70)
+	find_package (Threads)
+endif()
 
 function(gtest target test_source_files test_libraries)
+  if(BUILD_TESTS)
 	include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})
 	add_executable(test-${target} ${test_source_files})
 	target_link_libraries(test-${target} gtest gtest_main ${CMAKE_THREAD_LIBS_INIT})
@@ -26,4 +28,5 @@ function(gtest target test_source_files test_libraries)
 		set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} PARENT_SCOPE)
 		set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} PARENT_SCOPE)
 	endif()
+  endif()	
 endfunction()