问题
One way to get cmake to build x86 on Windows with Visual Studio is like so:
- Start Visual Studio Command prompt for x86
- Run cmake:
cmake -G "NMake Makefiles" \path_to_source\ - nmake
One way to get cmake to build x64 on Windows with Visual Studio is like so:
- Start Visual Studio Command prompt for x64
- Run cmake:
cmake -G "NMake Makefiles" \path_to_source\ - nmake
Using Cmake, how do I compile either or both architectures? (like how Visual Studio does it from in the IDE)
回答1:
This cannot be done with CMake. You have to generate two separate build folders. One for the x86 NMake build and one for the x64 NMake build. You cannot generate a single Visual Studio project covering both architectures with CMake either.
To build Visual Studio projects from the command line for both 32-bit and 64-bit without starting a Visual Studio command prompt, use the regular Visual Studio generators:
mkdir build32 & pushd build32
cmake -G "Visual Studio 15 2017" \path_to_source\
popd
mkdir build64 & pushd build64
cmake -G "Visual Studio 15 2017 Win64" \path_to_source\
popd
cmake --build build32 --config Release
cmake --build build64 --config Release
CMake generated projects that use one of the Visual Studio generators can be built from the command line with using the option --build followed by the build directory. The --config options specifies the build configuration.
回答2:
try use CMAKE_GENERATOR_PLATFORM
e.g.
// x86
cmake -DCMAKE_GENERATOR_PLATFORM=x86 .
// x64
cmake -DCMAKE_GENERATOR_PLATFORM=x64 .
回答3:
Besides CMAKE_GENERATOR_PLATFORM variable, there is also the -A switch
cmake -G "Visual Studio 16 2019" -A Win32
cmake -G "Visual Studio 16 2019" -A x64
https://cmake.org/cmake/help/v3.16/generator/Visual%20Studio%2016%202019.html#platform-selection
-A <platform-name> = Specify platform name if supported by
generator.
来源：https://stackoverflow.com/questions/28350214/how-to-build-x86-and-or-x64-on-windows-from-command-line-with-cmake