prebuild linux error (solved)

[codexico]

I have this error when building to linux:

error: ‘isnan’ was not declared in this scope

Related to:
cocos2d/cocos2d-x#15111

It's already fixed on the most recent github version, so I cloned and specified a custom cocos2d-x source root pointing to the clone:

rapidgame prebuild --src path/to/github-cloned-cocos2d-x

Now the prebuild works.