MinGW - 如何强制使用 64 位编译器而不是 32 位编译器 (Windows)

Question

I am running this command on windows with pybind11:

>cmake . -G "MinGW Makefiles"

This command gives me an error:

  Python config failure: Python is 64-bit, chosen compiler is 32-bit
Call Stack (most recent call first):
  lib/pybind11/tools/pybind11Tools.cmake:16 (find_package)
  lib/pybind11/CMakeLists.txt:33 (include)

And yes, I have seen this post , so please don't mark this as duplicate. Its different because I'm trying to use MinGW, whereas the answers in this post all uses Visual Studio. My goal is to generate .pyd files with pybind11, but compiling the C++ source file gives me some weird .vcxproj files that I can't use.

Please teach me how to correctly specify 64-bit or 32-bit of MinGW so that I can generate a .pyd file.

Answer 1

As mixing 32-bit and 64-bit will cause trouble sooner or later unless you are extremely careful, I would recommend using seperate toolchains for Windows 32-bit and Windows 64-bit.

I recommend getting standalone builds of these toolchains from https://winlibs.com/

MinGW Makefiles are somewhat slow, so to speed things up you may also consider using Ninja instead (CMake flag -GNinja ).