add gcc-specific flags

Author: ab9rf

tools/CMakeLists.txt

@@ -15,6 +15,9 @@ if(BUILD_XMLDUMP)
     add_definitions("-DUSE_FMTLIB")
     if(NOT TARGET lua)
         add_subdirectory(${dfhack_SOURCE_DIR}/depends/lua ${CMAKE_BINARY_DIR}/depends/lua)
+        if (UNIX)
+            set_target_properties(lua PROPERTIES COMPILE_FLAGS "-Wno-deprecated-declarations -Wno-deprecated-enum-enum-conversion")
+        endif()
     endif()
 
     file(GLOB XML_FILES ../df.*.xml)