mirror of
https://github.com/Kitware/CMake.git
synced 2026-01-06 13:51:33 -06:00
d1b48bfabd
CUDA 11.6 added the `nvcc -arch=native` flag to automatically compile for the host GPUs' architectures. Add support for specifying this special `native` value in `CMAKE_CUDA_ARCHITECTURES` and `CUDA_ARCHITECTURES`. During the compiler ABI detection step, detect the native architectures so we can pass them explicitly when using Clang or older versions of nvcc. Fixes: #22375
48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
#ifndef __CUDACC__
|
|
# error "A C or C++ compiler has been selected for CUDA"
|
|
#endif
|
|
|
|
#include <cstdio>
|
|
|
|
#include <cuda_runtime.h>
|
|
|
|
#include "CMakeCompilerABI.h"
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
int require = 0;
|
|
require += info_sizeof_dptr[argc];
|
|
require += info_byte_order_big_endian[argc];
|
|
require += info_byte_order_little_endian[argc];
|
|
#if defined(ABI_ID)
|
|
require += info_abi[argc];
|
|
#endif
|
|
static_cast<void>(argv);
|
|
|
|
int count = 0;
|
|
if (cudaGetDeviceCount(&count) != cudaSuccess || count == 0) {
|
|
std::fprintf(stderr, "No CUDA devices found.\n");
|
|
return -1;
|
|
}
|
|
|
|
int found = 0;
|
|
const char* sep = "";
|
|
for (int device = 0; device < count; ++device) {
|
|
cudaDeviceProp prop;
|
|
if (cudaGetDeviceProperties(&prop, device) == cudaSuccess) {
|
|
std::printf("%s%d%d", sep, prop.major, prop.minor);
|
|
sep = ";";
|
|
found = 1;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
std::fprintf(stderr, "No CUDA architecture detected from any devices.\n");
|
|
// Convince the compiler that the non-zero return value depends
|
|
// on the info strings so they are not optimized out.
|
|
return require ? -1 : 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|