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Switch to clang on aarch64

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GCC 16 + PyTorch 2.9.1 has problems, see the bug for more info.
This is a temporary measure until we can diagnose and fix the underlying
issue.

Signed-off-by: Alexander F. Lent <lx@xanderlent.com>
This commit is contained in:
Alexander F. Lent 2026-01-21 23:16:27 -05:00
commit 6fcef74daf
1 changed files with 12 additions and 0 deletions
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12
python-torch.spec
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@ -131,7 +131,13 @@ Source110: https://github.com/pypa/setuptools/archive/refs/tags/v%{st_ver}.
%global pt_arches x86_64 aarch64
ExclusiveArch: %pt_arches
# Switch to clang temporarily on aarch64, GCC 16 + PyTorch 2.9.1 has problems
# See rhbz#2431943 for more info
%ifarch aarch64
%global toolchain clang
%else
%global toolchain gcc
%endif
%global _lto_cflags %nil
BuildRequires: cmake
@ -142,8 +148,14 @@ BuildRequires: eigen3-devel
BuildRequires: flexiblas-devel
BuildRequires: fmt-devel
BuildRequires: foxi-devel
%if "%{toolchain}" == "gcc"
BuildRequires: gcc-c++
BuildRequires: gcc-gfortran
%endif
%if "%{toolchain}" == "clang"
BuildRequires: clang
BuildRequires: flang
%endif
%if %{with gloo}
BuildRequires: gloo-devel