fix

Author: kaidegit

tools/ci/bsp_buildings.py

@@ -118,7 +118,7 @@ def build_bsp_cmake(bsp, scons_args=''):
     ext_flags = ''
     if scons_args == "--strict":
         print("scons using strict mode, build it with `-Werror` flag")
-        ext_flags += '-DCMAKE_COMPILE_WARNING_AS_ERROR'
+        ext_flags += '-DCMAKE_COMPILE_WARNING_AS_ERROR=1'
     elif scons_args != '':
         print("this project would be built regularly because `scons_args` is not empty")
         return build_bsp_scons(bsp, scons_args)