Link OpenMW with libz on macOS

CI/before_script.osx.sh

@@ -10,7 +10,6 @@ mkdir build
 cd build
 
 cmake \
--D CMAKE_EXE_LINKER_FLAGS="-lz" \
 -D CMAKE_PREFIX_PATH="$DEPENDENCIES_ROOT;$QT_PATH" \
 -D CMAKE_OSX_DEPLOYMENT_TARGET="10.8" \
 -D CMAKE_OSX_SYSROOT="macosx10.11" \

apps/openmw/CMakeLists.txt

@@ -186,7 +186,7 @@ if(APPLE)
     if (FFmpeg_FOUND)
         find_library(COREVIDEO_FRAMEWORK CoreVideo)
         find_library(VDA_FRAMEWORK VideoDecodeAcceleration)
-        target_link_libraries(openmw ${COREVIDEO_FRAMEWORK} ${VDA_FRAMEWORK})
+        target_link_libraries(openmw z ${COREVIDEO_FRAMEWORK} ${VDA_FRAMEWORK})
     endif()
 endif(APPLE)