fix: unit tests are now built statically when BUILD_SHARED_LIBS is off (#1193)

Author: Jaskowicz1

library/CMakeLists.txt

@@ -111,8 +111,6 @@ if(NOT BUILD_SHARED_LIBS)
 	endif()
 endif()
 
-include("${CMAKE_CURRENT_SOURCE_DIR}/../cmake/colour.cmake")
-
 if (BUILD_VOICE_SUPPORT)
 	if (MINGW OR NOT WIN32)
 		find_package(PkgConfig QUIET)
@@ -361,7 +359,11 @@ if (DPP_BUILD_TEST)
 			if (MSVC)
 				target_compile_options(${testname} PRIVATE /utf-8)
 			endif()
-			target_link_libraries(${testname} PUBLIC ${modname})
+			set (static_if_needed "")
+			if(NOT BUILD_SHARED_LIBS)
+				set (static_if_needed "-static")
+			endif()
+			target_link_libraries(${testname} PUBLIC ${modname} ${static_if_needed})
 		endif()
 	endforeach()
 	add_test(