CMake: clean up use of target_link_libraries

Author: ligfx

CMakeLists.txt

@@ -24,12 +24,6 @@ src/PassiveSocket.cpp
 # append to sources so that dependency checks work on headers
 LIST(APPEND CLSOCKET_SOURCES ${CLSOCKET_HEADERS})
 
-# OS and compiler checks.
-if(WIN32)
-    add_definitions(-D_WINSOCK_DEPRECATED_NO_WARNINGS)
-    SET(PROJECT_LIBS Ws2_32.lib)
-endif()
-
 OPTION(BUILD_SHARED_LIBS "Build libs as shared" ON)
 if(DEFINED CLSOCKET_SHARED)
     message(FATAL_ERROR "The CLSOCKET_SHARED option is deprecated, instead use BUILD_SHARED_LIBS.")
@@ -40,7 +34,11 @@ endif()
 
 # make the lib
 ADD_LIBRARY(clsocket ${CLSOCKET_SOURCES})
-TARGET_LINK_LIBRARIES(clsocket ${PROJECT_LIBS})
+target_include_directories(clsocket PUBLIC src)
+if(WIN32)
+    add_definitions(-D_WINSOCK_DEPRECATED_NO_WARNINGS)
+    target_link_libraries(clsocket PRIVATE Ws2_32)
+endif()
 # target_include_directories was added in 2.8.11
 set_target_properties(clsocket PROPERTIES
     INCLUDE_DIRECTORIES ${PROJECT_SOURCE_DIR}/src
@@ -59,13 +57,13 @@ if(UNIX)
 
     if(CLSOCKET_EXAMPLES)
         ADD_EXECUTABLE(clsocket-example examples/RecvAsync.cpp)
-        TARGET_LINK_LIBRARIES(clsocket-example clsocket pthread)
+        target_link_libraries(clsocket-example clsocket pthread)
         install(TARGETS clsocket-example DESTINATION bin)
 
         ADD_EXECUTABLE(querydaytime-example examples/QueryDayTime.cpp)
-        TARGET_LINK_LIBRARIES(querydaytime-example clsocket)
+        target_link_libraries(querydaytime-example clsocket)
 
         ADD_EXECUTABLE(echoserver-example examples/EchoServer.cpp)
-        TARGET_LINK_LIBRARIES(echoserver-example clsocket)
+        target_link_libraries(echoserver-example clsocket)
     endif()
 endif()