Javascript CMake/OpenCVCompilerOptimizations中的CMake错误。CMake:505（消息）：编译器不'；不支持基线优化标志

我现在正试图从openCv源代码构建openCv.js javascript库 我在这个
我安装了cmake、python和Emscripten。 运行此python命令时：

python ./platforms/js/build_js.py build_js

我得到以下错误：

-- Could NOT find PythonInterp: Found unsuitable version "2.7.13", but required
is at least "3.4" (found E:/Github projects/emsdk-master/python/2.7.13.1_64bit/p
ython-2.7.13.amd64/python.exe)
-- Could NOT find PythonInterp: Found unsuitable version "2.7.13", but required
is at least "3.2" (found E:/Github projects/emsdk-master/python/2.7.13.1_64bit/p
ython-2.7.13.amd64/python.exe)
CMake Error at cmake/OpenCVCompilerOptimizations.cmake:505 (message):
Compiler doesn't support baseline optimization flags:
Call Stack (most recent call first):
cmake/OpenCVCompilerOptions.cmake:261 (ocv_compiler_optimization_options)
CMakeLists.txt:554 (include)

---

如何修复此错误并构建opencv.js？

您需要将python版本至少更新为3.4