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nix/nix-meson-build-support/default-system-cpu/meson.build
Sergei Zimmerman 60d124b36e
meson: Fix nix_system_cpu for MIPS and 32 bit ARM systems
Prior patches in 54dc5314e8
and 6db6190002 fixed the default
system double for i686 and ppc/ppc64. This also patch also covers
32 bit arm and mips. ARM cpu names are taken from host_machine.cpu()
for a lack of a better option, but host_machine.cpu_family() is
preferred, since that is supposed to be somewhat standard for cross
files. Endianness is handled correctly by looking at host_machine.endian().

This also updates the documentation to be up to date to how system cpu
is translated from the host_machine specification.
2025-07-27 00:50:53 +03:00

19 lines
798 B
Meson

# This attempts to translate meson cpu_family and cpu_name specified via
# --cross-file [1] into a nix *system double*. Nixpkgs mostly respects ([2]) the
# conventions outlined in [1].
#
# [1]: https://mesonbuild.com/Reference-tables.html#cpu-families
# [2]: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/lib/meson.nix
nix_system_cpu = {'ppc64' : 'powerpc64', 'ppc' : 'powerpc', 'x86' : 'i686'}.get(
host_machine.cpu_family(),
host_machine.cpu_family(),
)
if (host_machine.cpu_family() in [ 'ppc64', 'ppc' ]) and host_machine.endian() == 'little'
nix_system_cpu += 'le'
elif host_machine.cpu_family() in [ 'mips64', 'mips' ] and host_machine.endian() == 'little'
nix_system_cpu += 'el'
elif host_machine.cpu_family() == 'arm'
nix_system_cpu = host_machine.cpu()
endif