Fix sanitizer linkage within veal and cmt libraries

I suspect that our sanitizer flags were removed for these two CMake
targets. Instead of setting the properties directly, we call
target_compile_options and target_link_options
instead.

plugins/LadspaEffect/calf/CMakeLists.txt

@@ -38,7 +38,7 @@ SET(INLINE_FLAGS "")
 IF("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
 	SET(INLINE_FLAGS "-finline-functions-called-once -finline-limit=80")
 ENDIF()
-SET_TARGET_PROPERTIES(veal PROPERTIES COMPILE_FLAGS "-fexceptions -O2 -finline-functions ${INLINE_FLAGS}")
+target_compile_options(veal PRIVATE -fexceptions -O2 -finline-functions ${INLINE_FLAGS})
 
 if(LMMS_BUILD_WIN32)
 	add_custom_command(
@@ -50,5 +50,5 @@ if(LMMS_BUILD_WIN32)
 	)
 endif()
 IF(NOT LMMS_BUILD_APPLE AND NOT LMMS_BUILD_OPENBSD)
-	SET_TARGET_PROPERTIES(veal PROPERTIES LINK_FLAGS "${LINK_FLAGS} -shared -Wl,-no-undefined")
+	target_link_options(veal PRIVATE -shared -Wl,$<IF:$<PLATFORM_ID:GNU>,-no-undefined,-undefined>)
 ENDIF()

plugins/LadspaEffect/cmt/CMakeLists.txt

@@ -5,7 +5,7 @@ ADD_LIBRARY(cmt MODULE ${SOURCES})
 INSTALL(TARGETS cmt LIBRARY DESTINATION "${PLUGIN_DIR}/ladspa")
 
 SET_TARGET_PROPERTIES(cmt PROPERTIES PREFIX "")
-SET_TARGET_PROPERTIES(cmt PROPERTIES COMPILE_FLAGS "-Wall -O3 -fno-strict-aliasing")
+target_compile_options(cmt PRIVATE -Wall -O3 -fno-strict-aliasing)
 
 if(LMMS_BUILD_WIN32)
 	add_custom_command(
@@ -22,6 +22,6 @@ if(NOT LMMS_BUILD_WIN32)
 endif()
 
 IF(NOT LMMS_BUILD_APPLE AND NOT LMMS_BUILD_OPENBSD)
-	SET_TARGET_PROPERTIES(cmt PROPERTIES LINK_FLAGS "${LINK_FLAGS} -shared -Wl,-no-undefined")
+	target_link_options(cmt PRIVATE -shared -Wl,$<IF:$<PLATFORM_ID:GNU>,-no-undefined,-undefined>)
 ENDIF()