{ lib, targetPlatform }: let p = targetPlatform.gcc or {} // targetPlatform.parsed.abi; in lib.concatLists [ (lib.optional (!targetPlatform.isx86_64 && p ? arch) "--with-arch=${p.arch}") # --with-arch= is unknown flag on x86_64 (lib.optional (p ? cpu) "--with-cpu=${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.optional (let tp = targetPlatform; in tp.isPower && tp.libc == "glibc" && tp.is64bit) "--with-long-double-128") ]