mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-30 19:02:57 +00:00
462 lines
18 KiB
Nix
462 lines
18 KiB
Nix
/* This file contains various functions that take a stdenv and return
|
||
a new stdenv with different behaviour, e.g. using a different C
|
||
compiler. */
|
||
|
||
{ lib, pkgs, config }:
|
||
|
||
let
|
||
# N.B. Keep in sync with default arg for stdenv/generic.
|
||
defaultMkDerivationFromStdenv = import ./generic/make-derivation.nix { inherit lib config; };
|
||
|
||
# Low level function to help with overriding `mkDerivationFromStdenv`. One
|
||
# gives it the old stdenv arguments and a "continuation" function, and
|
||
# underneath the final stdenv argument it yields to the continuation to do
|
||
# whatever it wants with old `mkDerivation` (old `mkDerivationFromStdenv`
|
||
# applied to the *new, final* stdenv) provided for convenience.
|
||
withOldMkDerivation = stdenvSuperArgs: k: stdenvSelf: let
|
||
mkDerivationFromStdenv-super = stdenvSuperArgs.mkDerivationFromStdenv or defaultMkDerivationFromStdenv;
|
||
mkDerivationSuper = mkDerivationFromStdenv-super stdenvSelf;
|
||
in
|
||
k stdenvSelf mkDerivationSuper;
|
||
|
||
# Wrap the original `mkDerivation` providing extra args to it.
|
||
extendMkDerivationArgs = old: f: withOldMkDerivation old (_: mkDerivationSuper: args:
|
||
(mkDerivationSuper args).overrideAttrs f);
|
||
|
||
# Wrap the original `mkDerivation` transforming the result.
|
||
overrideMkDerivationResult = old: f: withOldMkDerivation old (_: mkDerivationSuper: args:
|
||
f (mkDerivationSuper args));
|
||
in
|
||
|
||
rec {
|
||
|
||
|
||
# Override the compiler in stdenv for specific packages.
|
||
overrideCC = stdenv: cc: stdenv.override { allowedRequisites = null; cc = cc; };
|
||
|
||
|
||
# Add some arbitrary packages to buildInputs for specific packages.
|
||
# Used to override packages in stdenv like Make. Should not be used
|
||
# for other dependencies.
|
||
overrideInStdenv = stdenv: pkgs:
|
||
stdenv.override (prev: { allowedRequisites = null; extraBuildInputs = (prev.extraBuildInputs or []) ++ pkgs; });
|
||
|
||
|
||
# Override the libc++ dynamic library used in the stdenv to use the one from the platform’s
|
||
# default stdenv. This allows building packages and linking dependencies with different
|
||
# compiler versions while still using the same libc++ implementation for compatibility.
|
||
#
|
||
# Note that this adapter still uses the headers from the new stdenv’s libc++. This is necessary
|
||
# because older compilers may not be able to parse the headers from the default stdenv’s libc++.
|
||
overrideLibcxx = stdenv:
|
||
assert stdenv.cc.libcxx != null;
|
||
let
|
||
llvmLibcxxVersion = lib.getVersion llvmLibcxx;
|
||
stdenvLibcxxVersion = lib.getVersion stdenvLibcxx;
|
||
|
||
stdenvLibcxx = pkgs.stdenv.cc.libcxx;
|
||
stdenvCxxabi = pkgs.stdenv.cc.libcxx.cxxabi;
|
||
|
||
llvmLibcxx = stdenv.cc.libcxx;
|
||
llvmCxxabi = stdenv.cc.libcxx.cxxabi;
|
||
|
||
libcxx = pkgs.runCommand "${stdenvLibcxx.name}-${llvmLibcxxVersion}" {
|
||
outputs = [ "out" "dev" ];
|
||
inherit cxxabi;
|
||
isLLVM = true;
|
||
} ''
|
||
mkdir -p "$dev/nix-support"
|
||
ln -s '${stdenvLibcxx}' "$out"
|
||
echo '${stdenvLibcxx}' > "$dev/nix-support/propagated-build-inputs"
|
||
ln -s '${lib.getDev llvmLibcxx}/include' "$dev/include"
|
||
'';
|
||
|
||
cxxabi = pkgs.runCommand "${stdenvCxxabi.name}-${llvmLibcxxVersion}" {
|
||
outputs = [ "out" "dev" ];
|
||
inherit (stdenvCxxabi) libName;
|
||
} ''
|
||
mkdir -p "$dev/nix-support"
|
||
ln -s '${stdenvCxxabi}' "$out"
|
||
echo '${stdenvCxxabi}' > "$dev/nix-support/propagated-build-inputs"
|
||
ln -s '${lib.getDev llvmCxxabi}/include' "$dev/include"
|
||
'';
|
||
in
|
||
overrideCC stdenv (stdenv.cc.override {
|
||
inherit libcxx;
|
||
extraPackages = [
|
||
cxxabi
|
||
pkgs.buildPackages.targetPackages."llvmPackages_${lib.versions.major llvmLibcxxVersion}".compiler-rt
|
||
];
|
||
});
|
||
|
||
# Override the setup script of stdenv. Useful for testing new
|
||
# versions of the setup script without causing a rebuild of
|
||
# everything.
|
||
#
|
||
# Example:
|
||
# randomPkg = import ../bla { ...
|
||
# stdenv = overrideSetup stdenv ../stdenv/generic/setup-latest.sh;
|
||
# };
|
||
overrideSetup = stdenv: setupScript: stdenv.override { inherit setupScript; };
|
||
|
||
|
||
# Return a modified stdenv that tries to build statically linked
|
||
# binaries.
|
||
makeStaticBinaries = stdenv0:
|
||
stdenv0.override (old: {
|
||
mkDerivationFromStdenv = withOldMkDerivation old (stdenv: mkDerivationSuper: args:
|
||
if stdenv.hostPlatform.isDarwin
|
||
then throw "Cannot build fully static binaries on Darwin/macOS"
|
||
else (mkDerivationSuper args).overrideAttrs (args: {
|
||
NIX_CFLAGS_LINK = toString (args.NIX_CFLAGS_LINK or "") + " -static";
|
||
} // lib.optionalAttrs (!(args.dontAddStaticConfigureFlags or false)) {
|
||
configureFlags = (args.configureFlags or []) ++ [
|
||
"--disable-shared" # brrr...
|
||
];
|
||
cmakeFlags = (args.cmakeFlags or []) ++ ["-DCMAKE_SKIP_INSTALL_RPATH=On"];
|
||
}));
|
||
} // lib.optionalAttrs (stdenv0.hostPlatform.libc == "glibc") {
|
||
extraBuildInputs = (old.extraBuildInputs or []) ++ [
|
||
pkgs.glibc.static
|
||
];
|
||
});
|
||
|
||
|
||
# Return a modified stdenv that builds static libraries instead of
|
||
# shared libraries.
|
||
makeStaticLibraries = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
dontDisableStatic = true;
|
||
} // lib.optionalAttrs (!(args.dontAddStaticConfigureFlags or false)) {
|
||
configureFlags = (args.configureFlags or []) ++ [
|
||
"--enable-static"
|
||
"--disable-shared"
|
||
];
|
||
cmakeFlags = (args.cmakeFlags or []) ++ [ "-DBUILD_SHARED_LIBS:BOOL=OFF" ];
|
||
mesonFlags = (args.mesonFlags or []) ++ [ "-Ddefault_library=static" ];
|
||
});
|
||
});
|
||
|
||
# Best effort static binaries. Will still be linked to libSystem,
|
||
# but more portable than Nix store binaries.
|
||
makeStaticDarwin = stdenv: stdenv.override (old: {
|
||
# extraBuildInputs are dropped in cross.nix, but darwin still needs them
|
||
extraBuildInputs = [ pkgs.buildPackages.darwin.CF ];
|
||
mkDerivationFromStdenv = withOldMkDerivation old (stdenv: mkDerivationSuper: args:
|
||
(mkDerivationSuper args).overrideAttrs (finalAttrs: {
|
||
NIX_CFLAGS_LINK = toString (finalAttrs.NIX_CFLAGS_LINK or "")
|
||
+ lib.optionalString (stdenv.cc.isGNU or false) " -static-libgcc";
|
||
nativeBuildInputs = (finalAttrs.nativeBuildInputs or [])
|
||
++ lib.optionals stdenv.hasCC [
|
||
(pkgs.buildPackages.makeSetupHook {
|
||
name = "darwin-portable-libSystem-hook";
|
||
substitutions = {
|
||
libsystem = "${stdenv.cc.libc}/lib/libSystem.B.dylib";
|
||
targetPrefix = stdenv.cc.bintools.targetPrefix;
|
||
};
|
||
} ./darwin/portable-libsystem.sh)
|
||
];
|
||
}));
|
||
});
|
||
|
||
# Puts all the other ones together
|
||
makeStatic = stdenv: lib.foldl (lib.flip lib.id) stdenv (
|
||
lib.optional stdenv.hostPlatform.isDarwin makeStaticDarwin
|
||
|
||
++ [ makeStaticLibraries propagateBuildInputs ]
|
||
|
||
# Apple does not provide a static version of libSystem or crt0.o
|
||
# So we can’t build static binaries without extensive hacks.
|
||
++ lib.optional (!stdenv.hostPlatform.isDarwin) makeStaticBinaries
|
||
);
|
||
|
||
|
||
/* Modify a stdenv so that all buildInputs are implicitly propagated to
|
||
consuming derivations
|
||
*/
|
||
propagateBuildInputs = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
propagatedBuildInputs = (args.propagatedBuildInputs or []) ++ (args.buildInputs or []);
|
||
buildInputs = [];
|
||
});
|
||
});
|
||
|
||
|
||
/* Modify a stdenv so that the specified attributes are added to
|
||
every derivation returned by its mkDerivation function.
|
||
|
||
Example:
|
||
stdenvNoOptimise =
|
||
addAttrsToDerivation
|
||
{ env.NIX_CFLAGS_COMPILE = "-O0"; }
|
||
stdenv;
|
||
*/
|
||
addAttrsToDerivation = extraAttrs: stdenv: stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (_: extraAttrs);
|
||
});
|
||
|
||
|
||
/* Use the trace output to report all processed derivations with their
|
||
license name.
|
||
*/
|
||
traceDrvLicenses = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = overrideMkDerivationResult (pkg:
|
||
let
|
||
printDrvPath = val: let
|
||
drvPath = builtins.unsafeDiscardStringContext pkg.drvPath;
|
||
license = pkg.meta.license or null;
|
||
in
|
||
builtins.trace "@:drv:${toString drvPath}:${builtins.toString license}:@" val;
|
||
in pkg // {
|
||
outPath = printDrvPath pkg.outPath;
|
||
drvPath = printDrvPath pkg.drvPath;
|
||
});
|
||
});
|
||
|
||
|
||
/* Modify a stdenv so that it produces debug builds; that is,
|
||
binaries have debug info, and compiler optimisations are
|
||
disabled. */
|
||
keepDebugInfo = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
dontStrip = true;
|
||
env = (args.env or {}) // { NIX_CFLAGS_COMPILE = toString (args.env.NIX_CFLAGS_COMPILE or "") + " -ggdb -Og"; };
|
||
});
|
||
});
|
||
|
||
|
||
/* Modify a stdenv so that it uses the Gold linker. */
|
||
useGoldLinker = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
NIX_CFLAGS_LINK = toString (args.NIX_CFLAGS_LINK or "") + " -fuse-ld=gold";
|
||
});
|
||
});
|
||
|
||
useLibsFrom = modelStdenv: targetStdenv:
|
||
let
|
||
ccForLibs = modelStdenv.cc.cc;
|
||
cc = pkgs.wrapCCWith {
|
||
/* NOTE: cc.cc is the unwrapped compiler. Should we respect the old
|
||
* wrapper instead? */
|
||
cc = targetStdenv.cc.cc;
|
||
|
||
/* NOTE(originally by rrbutani):
|
||
* Normally the `useCcForLibs`/`gccForLibs` mechanism is used to get a
|
||
* clang based `cc` to use `libstdc++` (from gcc).
|
||
*
|
||
* Here we (ab)use it to use a `libstdc++` from a different `gcc` than our
|
||
* `cc`.
|
||
*
|
||
* Note that this does not inhibit our `cc`'s lib dir from being added to
|
||
* cflags/ldflags (see `cc_solib` in `cc-wrapper`) but this is okay: our
|
||
* `gccForLibs`'s paths should take precedence. */
|
||
useCcForLibs = true;
|
||
gccForLibs = ccForLibs;
|
||
};
|
||
in
|
||
overrideCC targetStdenv cc;
|
||
|
||
useMoldLinker = stdenv: let
|
||
bintools = stdenv.cc.bintools.override {
|
||
extraBuildCommands = ''
|
||
wrap ${stdenv.cc.bintools.targetPrefix}ld.mold ${../build-support/bintools-wrapper/ld-wrapper.sh} ${pkgs.mold}/bin/ld.mold
|
||
wrap ${stdenv.cc.bintools.targetPrefix}ld ${../build-support/bintools-wrapper/ld-wrapper.sh} ${pkgs.mold}/bin/ld.mold
|
||
'';
|
||
};
|
||
in stdenv.override (old: {
|
||
allowedRequisites = null;
|
||
cc = stdenv.cc.override { inherit bintools; };
|
||
# gcc >12.1.0 supports '-fuse-ld=mold'
|
||
# the wrap ld above in bintools supports gcc <12.1.0 and shouldn't harm >12.1.0
|
||
# https://github.com/rui314/mold#how-to-use
|
||
} // lib.optionalAttrs (stdenv.cc.isClang || (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12")) {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
NIX_CFLAGS_LINK = toString (args.NIX_CFLAGS_LINK or "") + " -fuse-ld=mold";
|
||
});
|
||
});
|
||
|
||
|
||
/* Modify a stdenv so that it builds binaries optimized specifically
|
||
for the machine they are built on.
|
||
|
||
WARNING: this breaks purity! */
|
||
impureUseNativeOptimizations = stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
env = (args.env or {}) // { NIX_CFLAGS_COMPILE = toString (args.env.NIX_CFLAGS_COMPILE or "") + " -march=native"; };
|
||
|
||
NIX_ENFORCE_NO_NATIVE = false;
|
||
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
});
|
||
});
|
||
|
||
|
||
/* Modify a stdenv so that it builds binaries with the specified list of
|
||
compilerFlags appended and passed to the compiler.
|
||
|
||
This example would recompile every derivation on the system with
|
||
-funroll-loops and -O3 passed to each gcc invocation.
|
||
|
||
Example:
|
||
nixpkgs.overlays = [
|
||
(self: super: {
|
||
stdenv = super.withCFlags [ "-funroll-loops" "-O3" ] super.stdenv;
|
||
})
|
||
];
|
||
*/
|
||
withCFlags = compilerFlags: stdenv:
|
||
stdenv.override (old: {
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (args: {
|
||
env = (args.env or {}) // { NIX_CFLAGS_COMPILE = toString (args.env.NIX_CFLAGS_COMPILE or "") + " ${toString compilerFlags}"; };
|
||
});
|
||
});
|
||
|
||
# Overriding the SDK changes the Darwin SDK used to build the package, which:
|
||
# * Ensures that the compiler and bintools have the correct Libsystem version; and
|
||
# * Replaces any SDK references with those in the SDK corresponding to the requested SDK version.
|
||
#
|
||
# `sdkVersion` can be any of the following:
|
||
# * A version string indicating the requested SDK version; or
|
||
# * An attrset consisting of either or both of the following fields: darwinSdkVersion and darwinMinVersion.
|
||
overrideSDK = stdenv: sdkVersion:
|
||
let
|
||
inherit (
|
||
{ inherit (stdenv.hostPlatform) darwinMinVersion darwinSdkVersion; }
|
||
// (if lib.isAttrs sdkVersion then sdkVersion else { darwinSdkVersion = sdkVersion; })
|
||
) darwinMinVersion darwinSdkVersion;
|
||
|
||
sdk = pkgs.darwin."apple_sdk_${lib.replaceStrings [ "." ] [ "_" ] darwinSdkVersion}";
|
||
# TODO: Make this unconditional after #229210 has been merged,
|
||
# and the 10.12 SDK is updated to follow the new structure.
|
||
Libsystem = if darwinSdkVersion == "10.12" then pkgs.darwin.Libsystem else sdk.Libsystem;
|
||
|
||
replacePropagatedFrameworks = pkg:
|
||
let
|
||
propagatedInputs = pkg.propagatedBuildInputs;
|
||
mappedInputs = map mapPackageToSDK propagatedInputs;
|
||
|
||
env = {
|
||
inherit (pkg) outputs;
|
||
# Map old frameworks to new ones and the package’s outputs to their original outPaths.
|
||
# Also map any packages that have propagated frameworks to their proxy packages using
|
||
# the requested SDK version. These mappings are rendered into tab-separated files to be
|
||
# parsed and read back with `read`.
|
||
dependencies = lib.concatMapStrings (pair: "${pair.fst}\t${pair.snd}\n") (lib.zipLists propagatedInputs mappedInputs);
|
||
pkgOutputs = lib.concatMapStrings (output: "${output}\t${(lib.getOutput output pkg).outPath}\n") pkg.outputs;
|
||
passAsFile = [ "dependencies" "pkgOutputs" ];
|
||
};
|
||
in
|
||
# Only remap the package’s propagated inputs if there are any and if any of them were themselves remapped.
|
||
if lib.length propagatedInputs > 0 && propagatedInputs != mappedInputs
|
||
then pkgs.runCommand pkg.name env ''
|
||
# Iterate over the outputs in the package being replaced to make sure the proxy is
|
||
# a fully functional replacement. This is like `symlinkJoin` except for outputs and
|
||
# the contents of `nix-support`, which will be customized for the requested SDK.
|
||
while IFS=$'\t\n' read -r outputName pkgOutputPath; do
|
||
mkdir -p "''${!outputName}"
|
||
|
||
for targetPath in "$pkgOutputPath"/*; do
|
||
targetName=$(basename "$targetPath")
|
||
|
||
# `nix-support` is special-cased because any propagated inputs need their SDK
|
||
# frameworks replaced with those from the requested SDK.
|
||
if [ "$targetName" == "nix-support" ]; then
|
||
mkdir "''${!outputName}/nix-support"
|
||
|
||
for file in "$targetPath"/*; do
|
||
fileName=$(basename "$file")
|
||
|
||
if [ "$fileName" == "propagated-build-inputs" ]; then
|
||
cp "$file" "''${!outputName}/nix-support/$fileName"
|
||
|
||
while IFS=$'\t\n' read -r oldFramework newFramework; do
|
||
substituteInPlace "''${!outputName}/nix-support/$fileName" \
|
||
--replace "$oldFramework" "$newFramework"
|
||
done < "$dependenciesPath"
|
||
fi
|
||
done
|
||
else
|
||
ln -s "$targetPath" "''${!outputName}/$targetName"
|
||
fi
|
||
done
|
||
done < "$pkgOutputsPath"
|
||
''
|
||
else pkg;
|
||
|
||
# Remap a framework from one SDK version to another.
|
||
mapPackageToSDK = pkg:
|
||
let
|
||
name = lib.getName pkg;
|
||
framework = lib.removePrefix "apple-framework-" name;
|
||
in
|
||
/**/ if pkg == null then pkg
|
||
else if name != framework then sdk.frameworks."${framework}"
|
||
else replacePropagatedFrameworks pkg;
|
||
|
||
mapRuntimeToSDK = pkg:
|
||
# Only remap xcbuild for now, which exports the SDK used to build it.
|
||
if pkg != null && lib.isAttrs pkg && lib.getName pkg == "xcodebuild"
|
||
then pkg.override { stdenv = overrideSDK stdenv { inherit darwinMinVersion darwinSdkVersion; }; }
|
||
else pkg;
|
||
|
||
mapInputsToSDK = inputs: args:
|
||
let
|
||
runsAtBuild = lib.flip lib.elem [
|
||
"depsBuildBuild"
|
||
"depsBuildBuildPropagated"
|
||
"nativeBuildInputs"
|
||
"propagatedNativeBuildInputs"
|
||
"depsBuildTarget"
|
||
"depsBuildTargetPropagated"
|
||
];
|
||
atBuildInputs = lib.filter runsAtBuild inputs;
|
||
atRuntimeInputs = lib.subtractLists atBuildInputs inputs;
|
||
in
|
||
lib.genAttrs atRuntimeInputs (input: map mapPackageToSDK (args."${input}" or [ ]))
|
||
// lib.genAttrs atBuildInputs (input: map mapRuntimeToSDK (args."${input}" or [ ]));
|
||
|
||
mkCC = cc: cc.override {
|
||
bintools = cc.bintools.override { libc = Libsystem; };
|
||
libc = Libsystem;
|
||
};
|
||
in
|
||
# TODO: make this work across all input types and not just propagatedBuildInputs
|
||
stdenv.override (old: {
|
||
buildPlatform = old.buildPlatform // { inherit darwinMinVersion darwinSdkVersion; };
|
||
hostPlatform = old.hostPlatform // { inherit darwinMinVersion darwinSdkVersion; };
|
||
targetPlatform = old.targetPlatform // { inherit darwinMinVersion darwinSdkVersion; };
|
||
|
||
allowedRequisites = null;
|
||
cc = mkCC old.cc;
|
||
|
||
extraBuildInputs = [sdk.frameworks.CoreFoundation ];
|
||
mkDerivationFromStdenv = extendMkDerivationArgs old (mapInputsToSDK [
|
||
"buildInputs"
|
||
"nativeBuildInputs"
|
||
"propagatedNativeBuildInputs"
|
||
"propagatedBuildInputs"
|
||
]);
|
||
});
|
||
|
||
withDefaultHardeningFlags = defaultHardeningFlags: stdenv: let
|
||
bintools = let
|
||
bintools' = stdenv.cc.bintools;
|
||
in if bintools' ? override then (bintools'.override {
|
||
inherit defaultHardeningFlags;
|
||
}) else bintools';
|
||
in
|
||
stdenv.override (old: {
|
||
cc = if stdenv.cc == null then null else stdenv.cc.override {
|
||
inherit bintools;
|
||
};
|
||
allowedRequisites = lib.mapNullable (rs: rs ++ [ bintools ]) (stdenv.allowedRequisites or null);
|
||
});
|
||
}
|