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{ lib, targetPlatform }:
let
isAarch64Darwin = targetPlatform.isDarwin && targetPlatform.isAarch64;
gcc = targetPlatform.gcc or { };
p = gcc // targetPlatform.parsed.abi;
in
lib.concatLists [
# --with-arch= is unknown flag on x86_64 and aarch64-darwin.
(lib.optional (!targetPlatform.isx86_64 && !isAarch64Darwin && p ? arch) "--with-arch=${p.arch}")
# See supported_defaults in gcc/config.gcc for architecture support.
# --with-cpu on aarch64-darwin fails with "Unknown cpu used in --with-cpu=apple-a13".
(lib.optional (
with targetPlatform; !isLoongArch64 && !isMips && !isRiscV && !isS390 && !isAarch64Darwin && p ? cpu
) "--with-cpu=${p.cpu}")
(lib.optional (p ? abi) "--with-abi=${p.abi}")
(lib.optional (p ? fpu) "--with-fpu=${p.fpu}")
(lib.optional (p ? float) "--with-float=${p.float}")
(lib.optional (p ? mode) "--with-mode=${p.mode}")
(lib.optionals targetPlatform.isPower64
# musl explicitly rejects 128-bit long double on
# powerpc64; see musl/arch/powerpc64/bits/float.h
(
lib.optionals
(
!targetPlatform.isMusl
&& (
targetPlatform.isLittleEndian
||
# "... --with-long-double-format is only supported if the default cpu is power7 or newer"
# https://github.com/NixOS/nixpkgs/pull/170215#issuecomment-1202164709
(lib.lists.elem (lib.strings.substring 0 6 (p.cpu or "")) [
"power7"
"power8"
"power9"
"power1" # 0, 11, etc
])
)
)
[
"--with-long-double-128"
"--with-long-double-format=${gcc.long-double-format or "ieee"}"
]
)
)
(lib.optional targetPlatform.isMips64n32 "--disable-libsanitizer") # libsanitizer does not compile on mips64n32
]
|
