56 lines
1.8 KiB
Nix
56 lines
1.8 KiB
Nix
pkgs: stdenv:
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let
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inherit (pkgs) addAttrsToDerivation mimalloc overrideCC;
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inherit (pkgs.lib) getLib optionalAttrs optionals toList;
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inherit (pkgs.llvmPackages_latest) clangUseLLVM bintools;
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inherit (stdenv) hostPlatform targetPlatform;
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cflags = [
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"-pipe" # Prefer pipes over temporary files between stages
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"-O2" # Safe compiler optimisations
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"-flto"
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];
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ldflags = [
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"-O2" # Enable tail merging of strings
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"--hash-style=gnu" # Produce only DT_GNU_HASH
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"--icf=safe" # Fold identical code where safe
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"--lto-O2"
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"-L${getLib mimalloc}/lib" "-lmimalloc"
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];
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rustflags = [
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"-C opt-level=2"
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"-C linker-flavor=lld"
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"-C lto"
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"-C linker-plugin-lto"
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] ++ optionals (targetPlatform.isx86_64 && targetPlatform ? gcc.arch) [
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"-C target-cpu=${targetPlatform.gcc.arch}"
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] ++ map (flag: "-C link-arg=${flag}") ldflags;
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pname = base:
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if base ? pname
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then "package ${base.pname}"
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else "unknown package";
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in addAttrsToDerivation (base:
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if base ? idiosynStdenvGuard
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then builtins.traceVerbose "stdenv override applied repeatedly for ${pname base}," { }
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else {
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idiosynStdenvGuard = null;
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env = (base.env or { }) // optionalAttrs (!base ? NIX_CFLAGS_COMPILE) {
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NIX_CFLAGS_COMPILE =
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toString (toList base.env.NIX_CFLAGS_COMPILE or [ ] ++ cflags);
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} // optionalAttrs (base ? env.NIX_LDFLAGS) {
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NIX_LDFLAGS =
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toString (toList base.env.NIX_LDFLAGS or [ ] ++ ldflags);
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};
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NIX_RUSTFLAGS = toList base.NIX_RUSTFLAGS or [ ] ++ rustflags;
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} // optionalAttrs (base ? env.NIX_CFLAGS) {
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NIX_CFLAGS_COMPILE = toList base.NIX_CFLAGS_COMPILE or [ ] ++ cflags;
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} // optionalAttrs (!base ? env.NIX_LDFLAGS) {
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NIX_LDFLAGS = toList base.NIX_LDFLAGS or [ ] ++ ldflags;
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}) (overrideCC stdenv (clangUseLLVM.override { inherit bintools; }))
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