forked from mirrors/nixpkgs
35a0e15ff6
This will fail with an assertion error on native NetBSD, but it wouldn't have worked anyway. We can fix that later.
396 lines
14 KiB
Nix
396 lines
14 KiB
Nix
# The Nixpkgs CC is not directly usable, since it doesn't know where
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# the C library and standard header files are. Therefore the compiler
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# produced by that package cannot be installed directly in a user
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# environment and used from the command line. So we use a wrapper
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# script that sets up the right environment variables so that the
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# compiler and the linker just "work".
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{ name ? ""
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, lib
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, stdenvNoCC
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, bintools ? null, libc ? null, coreutils ? null, shell ? stdenvNoCC.shell, gnugrep ? null
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, netbsd ? null, netbsdCross ? null
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, sharedLibraryLoader ?
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if libc == null then
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null
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else if stdenvNoCC.targetPlatform.isNetBSD then
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if libc != targetPackages.netbsdCross.headers then
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targetPackages.netbsdCross.ld_elf_so
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else
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null
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else
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lib.getLib libc
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, nativeTools, noLibc ? false, nativeLibc, nativePrefix ? ""
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, propagateDoc ? bintools != null && bintools ? man
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, extraPackages ? [], extraBuildCommands ? ""
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, buildPackages ? {}
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, targetPackages ? {}
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, useMacosReexportHack ? false
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# Darwin code signing support utilities
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, postLinkSignHook ? null, signingUtils ? null
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}:
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with lib;
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assert nativeTools -> !propagateDoc && nativePrefix != "";
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assert !nativeTools ->
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bintools != null && coreutils != null && gnugrep != null;
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assert !(nativeLibc && noLibc);
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assert (noLibc || nativeLibc) == (libc == null);
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let
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stdenv = stdenvNoCC;
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inherit (stdenv) hostPlatform targetPlatform;
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# Prefix for binaries. Customarily ends with a dash separator.
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#
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# TODO(@Ericson2314) Make unconditional, or optional but always true by
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# default.
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targetPrefix = lib.optionalString (targetPlatform != hostPlatform)
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(targetPlatform.config + "-");
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bintoolsVersion = lib.getVersion bintools;
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bintoolsName = lib.removePrefix targetPrefix (lib.getName bintools);
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libc_bin = if libc == null then null else getBin libc;
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libc_dev = if libc == null then null else getDev libc;
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libc_lib = if libc == null then null else getLib libc;
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bintools_bin = if nativeTools then "" else getBin bintools;
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# The wrapper scripts use 'cat' and 'grep', so we may need coreutils.
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coreutils_bin = if nativeTools then "" else getBin coreutils;
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# See description in cc-wrapper.
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suffixSalt = replaceStrings ["-" "."] ["_" "_"] targetPlatform.config;
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# The dynamic linker has different names on different platforms. This is a
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# shell glob that ought to match it.
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dynamicLinker =
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/**/ if sharedLibraryLoader == null then null
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else if targetPlatform.libc == "musl" then "${sharedLibraryLoader}/lib/ld-musl-*"
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else if (targetPlatform.libc == "bionic" && targetPlatform.is32bit) then "/system/bin/linker"
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else if (targetPlatform.libc == "bionic" && targetPlatform.is64bit) then "/system/bin/linker64"
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else if targetPlatform.libc == "nblibc" then "${sharedLibraryLoader}/libexec/ld.elf_so"
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else if targetPlatform.system == "i686-linux" then "${sharedLibraryLoader}/lib/ld-linux.so.2"
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else if targetPlatform.system == "x86_64-linux" then "${sharedLibraryLoader}/lib/ld-linux-x86-64.so.2"
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else if targetPlatform.system == "powerpc64le-linux" then "${sharedLibraryLoader}/lib/ld64.so.2"
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# ARM with a wildcard, which can be "" or "-armhf".
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else if (with targetPlatform; isAarch32 && isLinux) then "${sharedLibraryLoader}/lib/ld-linux*.so.3"
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else if targetPlatform.system == "aarch64-linux" then "${sharedLibraryLoader}/lib/ld-linux-aarch64.so.1"
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else if targetPlatform.system == "powerpc-linux" then "${sharedLibraryLoader}/lib/ld.so.1"
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else if targetPlatform.isMips then "${sharedLibraryLoader}/lib/ld.so.1"
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else if targetPlatform.isDarwin then "/usr/lib/dyld"
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else if targetPlatform.isFreeBSD then "/libexec/ld-elf.so.1"
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else if lib.hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1"
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else null;
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expand-response-params =
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if buildPackages ? stdenv && buildPackages.stdenv.hasCC && buildPackages.stdenv.cc != "/dev/null"
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then import ../expand-response-params { inherit (buildPackages) stdenv; }
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else "";
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in
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stdenv.mkDerivation {
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pname = targetPrefix
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+ (if name != "" then name else "${bintoolsName}-wrapper");
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version = if bintools == null then null else bintoolsVersion;
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preferLocalBuild = true;
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inherit bintools_bin libc_bin libc_dev libc_lib coreutils_bin;
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shell = getBin shell + shell.shellPath or "";
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gnugrep_bin = if nativeTools then "" else gnugrep;
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inherit targetPrefix suffixSalt;
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outputs = [ "out" ] ++ optionals propagateDoc ([ "man" ] ++ optional (bintools ? info) "info");
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passthru = {
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inherit bintools libc nativeTools nativeLibc nativePrefix;
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emacsBufferSetup = pkgs: ''
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; We should handle propagation here too
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(mapc
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(lambda (arg)
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(when (file-directory-p (concat arg "/lib"))
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(setenv "NIX_LDFLAGS_${suffixSalt}" (concat (getenv "NIX_LDFLAGS_${suffixSalt}") " -L" arg "/lib")))
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(when (file-directory-p (concat arg "/lib64"))
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(setenv "NIX_LDFLAGS_${suffixSalt}" (concat (getenv "NIX_LDFLAGS_${suffixSalt}") " -L" arg "/lib64"))))
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'(${concatStringsSep " " (map (pkg: "\"${pkg}\"") pkgs)}))
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'';
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};
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dontBuild = true;
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dontConfigure = true;
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unpackPhase = ''
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src=$PWD
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'';
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installPhase =
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''
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mkdir -p $out/bin $out/nix-support
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wrap() {
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local dst="$1"
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local wrapper="$2"
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export prog="$3"
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substituteAll "$wrapper" "$out/bin/$dst"
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chmod +x "$out/bin/$dst"
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}
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''
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+ (if nativeTools then ''
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echo ${nativePrefix} > $out/nix-support/orig-bintools
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ldPath="${nativePrefix}/bin"
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'' else ''
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echo $bintools_bin > $out/nix-support/orig-bintools
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ldPath="${bintools_bin}/bin"
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''
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# Solaris needs an additional ld wrapper.
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+ optionalString (targetPlatform.isSunOS && nativePrefix != "") ''
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ldPath="${nativePrefix}/bin"
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exec="$ldPath/${targetPrefix}ld"
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wrap ld-solaris ${./ld-solaris-wrapper.sh}
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'')
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# Create a symlink to as (the assembler).
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+ ''
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if [ -e $ldPath/${targetPrefix}as ]; then
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ln -s $ldPath/${targetPrefix}as $out/bin/${targetPrefix}as
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fi
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'' + (if !useMacosReexportHack then ''
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wrap ${targetPrefix}ld ${./ld-wrapper.sh} ''${ld:-$ldPath/${targetPrefix}ld}
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'' else ''
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ldInner="${targetPrefix}ld-reexport-delegate"
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wrap "$ldInner" ${./macos-sierra-reexport-hack.bash} ''${ld:-$ldPath/${targetPrefix}ld}
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wrap "${targetPrefix}ld" ${./ld-wrapper.sh} "$out/bin/$ldInner"
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unset ldInner
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'') + ''
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for variant in ld.gold ld.bfd ld.lld; do
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local underlying=$ldPath/${targetPrefix}$variant
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[[ -e "$underlying" ]] || continue
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wrap ${targetPrefix}$variant ${./ld-wrapper.sh} $underlying
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done
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'';
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emulation = let
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fmt =
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/**/ if targetPlatform.isDarwin then "mach-o"
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else if targetPlatform.isWindows then "pe"
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else "elf" + toString targetPlatform.parsed.cpu.bits;
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endianPrefix = if targetPlatform.isBigEndian then "big" else "little";
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sep = optionalString (!targetPlatform.isMips && !targetPlatform.isPower && !targetPlatform.isRiscV) "-";
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arch =
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/**/ if targetPlatform.isAarch64 then endianPrefix + "aarch64"
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else if targetPlatform.isAarch32 then endianPrefix + "arm"
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else if targetPlatform.isx86_64 then "x86-64"
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else if targetPlatform.isx86_32 then "i386"
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else if targetPlatform.isMips then {
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mips = "btsmipn32"; # n32 variant
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mipsel = "ltsmipn32"; # n32 variant
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mips64 = "btsmip";
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mips64el = "ltsmip";
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}.${targetPlatform.parsed.cpu.name}
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else if targetPlatform.isMmix then "mmix"
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else if targetPlatform.isPower then if targetPlatform.isBigEndian then "ppc" else "lppc"
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else if targetPlatform.isSparc then "sparc"
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else if targetPlatform.isMsp430 then "msp430"
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else if targetPlatform.isAvr then "avr"
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else if targetPlatform.isAlpha then "alpha"
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else if targetPlatform.isVc4 then "vc4"
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else if targetPlatform.isOr1k then "or1k"
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else if targetPlatform.isRiscV then "lriscv"
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else throw "unknown emulation for platform: ${targetPlatform.config}";
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in if targetPlatform.useLLVM or false then ""
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else targetPlatform.bfdEmulation or (fmt + sep + arch);
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strictDeps = true;
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depsTargetTargetPropagated = extraPackages;
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wrapperName = "BINTOOLS_WRAPPER";
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setupHooks = [
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../setup-hooks/role.bash
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./setup-hook.sh
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];
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postFixup =
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##
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## General libc support
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##
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optionalString (libc != null) (''
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touch "$out/nix-support/libc-ldflags"
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echo "-L${libc_lib}${libc.libdir or "/lib"}" >> $out/nix-support/libc-ldflags
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echo "${libc_lib}" > $out/nix-support/orig-libc
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echo "${libc_dev}" > $out/nix-support/orig-libc-dev
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''
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##
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## Dynamic linker support
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##
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+ optionalString (sharedLibraryLoader != null) ''
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if [[ -z ''${dynamicLinker+x} ]]; then
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echo "Don't know the name of the dynamic linker for platform '${targetPlatform.config}', so guessing instead." >&2
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local dynamicLinker="${sharedLibraryLoader}/lib/ld*.so.?"
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fi
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''
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# Expand globs to fill array of options
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+ ''
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dynamicLinker=($dynamicLinker)
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case ''${#dynamicLinker[@]} in
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0) echo "No dynamic linker found for platform '${targetPlatform.config}'." >&2;;
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1) echo "Using dynamic linker: '$dynamicLinker'" >&2;;
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*) echo "Multiple dynamic linkers found for platform '${targetPlatform.config}'." >&2;;
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esac
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if [ -n "''${dynamicLinker-}" ]; then
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echo $dynamicLinker > $out/nix-support/dynamic-linker
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${if targetPlatform.isDarwin then ''
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printf "export LD_DYLD_PATH=%q\n" "$dynamicLinker" >> $out/nix-support/setup-hook
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'' else lib.optionalString (sharedLibraryLoader != null) ''
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if [ -e ${sharedLibraryLoader}/lib/32/ld-linux.so.2 ]; then
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echo ${sharedLibraryLoader}/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
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fi
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touch $out/nix-support/ld-set-dynamic-linker
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''}
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fi
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'')
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##
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## User env support
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##
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# Propagate the underling unwrapped bintools so that if you
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# install the wrapper, you get tools like objdump (same for any
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# binaries of libc).
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+ optionalString (!nativeTools) ''
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printWords ${bintools_bin} ${if libc == null then "" else libc_bin} > $out/nix-support/propagated-user-env-packages
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''
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##
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## Man page and info support
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##
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+ optionalString propagateDoc (''
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ln -s ${bintools.man} $man
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'' + optionalString (bintools ? info) ''
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ln -s ${bintools.info} $info
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'')
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##
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## Hardening support
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##
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# some linkers on some platforms don't support specific -z flags
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+ ''
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export hardening_unsupported_flags=""
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if [[ "$($ldPath/${targetPrefix}ld -z now 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
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hardening_unsupported_flags+=" bindnow"
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fi
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if [[ "$($ldPath/${targetPrefix}ld -z relro 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
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hardening_unsupported_flags+=" relro"
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fi
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''
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+ optionalString hostPlatform.isCygwin ''
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hardening_unsupported_flags+=" pic"
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''
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+ optionalString targetPlatform.isAvr ''
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hardening_unsupported_flags+=" relro bindnow"
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''
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+ optionalString (libc != null && targetPlatform.isAvr) ''
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for isa in avr5 avr3 avr4 avr6 avr25 avr31 avr35 avr51 avrxmega2 avrxmega4 avrxmega5 avrxmega6 avrxmega7 tiny-stack; do
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echo "-L${getLib libc}/avr/lib/$isa" >> $out/nix-support/libc-cflags
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done
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''
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+ optionalString stdenv.targetPlatform.isDarwin ''
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echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/libc-ldflags
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''
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###
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### Remove LC_UUID
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###
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+ optionalString (stdenv.targetPlatform.isDarwin && !(stdenv.cc.bintools.bintools.isGNU or false)) ''
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echo "-no_uuid" >> $out/nix-support/libc-ldflags-before
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''
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+ ''
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for flags in "$out/nix-support"/*flags*; do
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substituteInPlace "$flags" --replace $'\n' ' '
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done
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substituteAll ${./add-flags.sh} $out/nix-support/add-flags.sh
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substituteAll ${./add-hardening.sh} $out/nix-support/add-hardening.sh
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substituteAll ${../wrapper-common/utils.bash} $out/nix-support/utils.bash
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''
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###
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### Ensure consistent LC_VERSION_MIN_MACOSX
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###
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+ optionalString stdenv.targetPlatform.isDarwin (
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let
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inherit (stdenv.targetPlatform)
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darwinPlatform darwinSdkVersion
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darwinMinVersion darwinMinVersionVariable;
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in ''
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export darwinPlatform=${darwinPlatform}
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export darwinMinVersion=${darwinMinVersion}
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export darwinSdkVersion=${darwinSdkVersion}
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export darwinMinVersionVariable=${darwinMinVersionVariable}
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substituteAll ${./add-darwin-ldflags-before.sh} $out/nix-support/add-local-ldflags-before.sh
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''
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)
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##
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## Code signing on Apple Silicon
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##
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+ optionalString (targetPlatform.isDarwin && targetPlatform.isAarch64) ''
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echo 'source ${postLinkSignHook}' >> $out/nix-support/post-link-hook
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export signingUtils=${signingUtils}
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wrap \
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${targetPrefix}install_name_tool \
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${./darwin-install_name_tool-wrapper.sh} \
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"${bintools_bin}/bin/${targetPrefix}install_name_tool"
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wrap \
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${targetPrefix}strip ${./darwin-strip-wrapper.sh} \
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"${bintools_bin}/bin/${targetPrefix}strip"
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''
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##
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## Extra custom steps
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##
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+ extraBuildCommands;
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inherit dynamicLinker expand-response-params;
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# for substitution in utils.bash
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expandResponseParams = "${expand-response-params}/bin/expand-response-params";
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meta =
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let bintools_ = if bintools != null then bintools else {}; in
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(if bintools_ ? meta then removeAttrs bintools.meta ["priority"] else {}) //
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{ description =
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lib.attrByPath ["meta" "description"] "System binary utilities" bintools_
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+ " (wrapper script)";
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priority = 10;
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} // optionalAttrs useMacosReexportHack {
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platforms = lib.platforms.darwin;
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};
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}
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