Unable to compile on arch-linux

[mrAndersen]

torch-sys is 0.14.0

Unable to compile torch-sys on arch gcc version 14.1.1, tried gcc 13, no luck, also tried all the combinations of ENV (LIBTORCH_USE_PYTORCH=1|0, LIBTORCH_BYPASS_VERSION_CHECK=1|0) it simply doesn't work. I am keep getting:

 cargo:warning=In file included from libtch/torch_api_generated.h:2,
  cargo:warning=                 from libtch/torch_api_generated.cpp:2:
  cargo:warning=libtch/torch_api_generated.cpp: In function ‘void atg__cslt_sparse_mm(at::Tensor**, tensor, tensor, tensor, int)’:
  cargo:warning=libtch/torch_api_generated.cpp:640:104: error: invalid initialization of reference of type ‘const std::optional<at::Tensor>&’ from expression of type ‘bool’
  cargo:warning=  640 |     auto outputs__ = torch::_cslt_sparse_mm(*compressed_A, *dense_B, (bias ? *bias : torch::Tensor()), (bool)transpose_result);
  cargo:warning=      |                                                                                                        ^~~~~~~~~~~~~~~~~~~~~~
  cargo:warning=libtch/torch_api.h:19:5: note: in definition of macro ‘PROTECT’
  cargo:warning=   19 |     x \
  cargo:warning=      |     ^

libtorch is maunally downloaded (version 2.3.0) and specified in LIBTORCH env during cargo build. Tried with cuda or without cuda - same error

[AAlieZZ]

Back to the old version

[dependencies]
tch = { git = "https://github.com/LaurentMazare/tch-rs", rev = "a90854b2135b91546ca6082418d478126e1f6a26" }

And it worked!

[LaurentMazare]

Each version of tch/torch-sys is only compatible with a single version of libtorch. For 0.14.0, the matching libtorch version is 2.1.0 which probably explains the original error, 0.16.0 should be the version to use with libtorch 2.3.0.