75 lines
2.5 KiB
Nix
75 lines
2.5 KiB
Nix
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{ lib, pkgs, ... }: { ... }@attrs: let
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stdenv' = attrs.stdenv or attrs.baseStdenv;
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pkgs' = attrs.pkgs or attrs.buildPackages;
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inherit (pkgs') stdenv;
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inherit (stdenv) buildPlatform hostPlatform targetPlatform;
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inherit (stdenv.cc) isClang nativePrefix targetPrefix;
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inherit (stdenv.cc.bintools) isLLVM;
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inherit (lib) optionals toList;
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inherit (lib) optionalAttrs filterAttrs mapAttrs mapAttrs';
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in pkgs.addAttrsToDerivation (prevAttrs: let
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ffpContract = prevAttrs.ffpContract or true;
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autoVarInit = prevAttrs.autoVarInit or null;
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boundsCheck = prevAttrs.boundsCheck or false;
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overrideAlloc = prevAttrs.overrideAlloc or true;
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env = let
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tools = {
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CC = if isClang then "clang" else "gcc";
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CPP = "cpp";
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CXX = if isClang then "clang++" else "g++";
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LD = "ld";
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AR = "ar";
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NM = "nm";
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OBJCOPY = "objcopy";
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OBJDUMP = "objdump";
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READELF = "readelf";
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RANLIB = "ranlib";
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};
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in {
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CBUILD = buildPlatform.config;
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CHOST = hostPlatform.config;
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CTARGET = targetPlatform.config;
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} //
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mapAttrs (name: value: lib.getExe' stdenv.cc (targetPrefix + value)) tools //
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mapAttrs' (name: value: {
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name = "HOST${name}";
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value = lib.getExe' stdenv.cc (nativePrefix + value);
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}) tools;
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flags = rec {
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NIX_CFLAGS_COMPILE = [ "-pipe" "-fno-semantic-interposition" ]
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++ optionals (isClang && ffpContract) [ "-ffp-contract=fast-honor-pragmas" ]
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++ optionals isLLVM [ "-flto" ]
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++ optionals (autoVarInit != null) [ "-ftrivial-auto-var-init=${autoVarInit}" ]
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++ optionals boundsCheck [ "-fsanitize-trap=bounds,object-size,vla-bound" ];
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NIX_LDFLAGS = [ "-O2" "--hash-style=gnu" ]
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++ optionals isLLVM [ "--icf=safe" "--lto-O2" ]
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++ optionals overrideAlloc [ "-lmimalloc" ];
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NIX_RUSTFLAGS = [
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"-C" "opt-level=2"
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"-C" "linker-flavor=ld.lld"
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"-C" "lto"
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"-C" "linker-plugin-lto"
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"-C" "target-cpu=${targetPlatform.gcc.arch}"
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] ++ (map (flag: [ "-C" "link-arg=${flag}" ]) NIX_LDFLAGS |> lib.flatten);
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GOFLAGS = [ "-ldflags=-linkmode=external" ];
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};
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in {
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buildInputs = optionals overrideAlloc [ pkgs.mimalloc ];
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env = prevAttrs.env or { } //
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filterAttrs (name: value: !prevAttrs ? env.${name}) env //
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(filterAttrs (name: value: prevAttrs ? env.${name}) flags
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|> mapAttrs (name: value: toList prevAttrs.env.${name} or [ ] ++ value |> toString));
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} //
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(filterAttrs (name: value: !prevAttrs ? env.${name}) flags
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|> mapAttrs (name: value: toList prevAttrs.${name} or [ ] ++ value))
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) stdenv';
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