fix(CMakeLists): emscripten build
fix(CMakeLists): emscripten build

leodemoura/lean,digama0/lean,Kha/lean,leanprover/lean,leodemoura/lean,digama0/lean,leanprover-community/lean,dselsam/lean,leanprover/lean,leodemoura/lean,leanprover/lean,Kha/lean,Kha/lean,leanprover/lean,leanprover/lean,leanprover-community/lean,digama0/lean,Kha/lean,digama0/lean,leanprover-community/lean,leanprover-community/lean,dselsam/lean,digama0/lean,leodemoura/lean,fpvandoorn/lean,leanprover-community/lean,dselsam/lean,dselsam/lean,leanprover/lean,leodemoura/lean,fpvandoorn/lean,dselsam/lean,leanprover-community/lean,fpvandoorn/lean,fpvandoorn/lean,Kha/lean,leodemoura/lean,fpvandoorn/lean,Kha/lean,dselsam/lean,fpvandoorn/lean,digama0/lean