Merge pull request #75 from simulton/master

Fix cmake when compiling to a static lib

Author: githubuser0xFFFF

CMakeLists.txt

@@ -64,7 +64,7 @@ else()
 endif()
 if(BUILD_STATIC)
     add_library(qtadvanceddocking STATIC ${ads_SRCS})
-    set(ads_COMPILE_DEFINE ${ads_COMPILE_DEFINE} ADS_STATIC)
+    target_compile_definitions(qtadvanceddocking PUBLIC ADS_STATIC)
 else()
     add_library(qtadvanceddocking SHARED ${ads_SRCS})
     set(ads_COMPILE_DEFINE ${ads_COMPILE_DEFINE} ADS_SHARED_EXPORT)