439 lines
15 KiB
Nix
439 lines
15 KiB
Nix
# The Nixpkgs CC is not directly usable, since it doesn't know where
|
|
# the C library and standard header files are. Therefore the compiler
|
|
# produced by that package cannot be installed directly in a user
|
|
# environment and used from the command line. So we use a wrapper
|
|
# script that sets up the right environment variables so that the
|
|
# compiler and the linker just "work".
|
|
|
|
{ name ? ""
|
|
, lib
|
|
, stdenvNoCC
|
|
, runtimeShell
|
|
, bintools ? null, libc ? null, coreutils ? null, gnugrep ? null
|
|
, netbsd ? null, netbsdCross ? null
|
|
, sharedLibraryLoader ?
|
|
if libc == null then
|
|
null
|
|
else if stdenvNoCC.targetPlatform.isNetBSD then
|
|
if !(targetPackages ? netbsdCross) then
|
|
netbsd.ld_elf_so
|
|
else if libc != targetPackages.netbsdCross.headers then
|
|
targetPackages.netbsdCross.ld_elf_so
|
|
else
|
|
null
|
|
else
|
|
lib.getLib libc
|
|
, nativeTools, noLibc ? false, nativeLibc, nativePrefix ? ""
|
|
, propagateDoc ? bintools != null && bintools ? man
|
|
, extraPackages ? [], extraBuildCommands ? ""
|
|
, isGNU ? bintools.isGNU or false
|
|
, isLLVM ? bintools.isLLVM or false
|
|
, isCCTools ? bintools.isCCTools or false
|
|
, expand-response-params
|
|
, targetPackages ? {}
|
|
, useMacosReexportHack ? false
|
|
, wrapGas ? false
|
|
|
|
# Note: the hardening flags are part of the bintools-wrapper, rather than
|
|
# the cc-wrapper, because a few of them are handled by the linker.
|
|
, defaultHardeningFlags ? [
|
|
"bindnow"
|
|
"format"
|
|
"fortify"
|
|
"fortify3"
|
|
"pic"
|
|
"relro"
|
|
"stackprotector"
|
|
"strictoverflow"
|
|
] ++ lib.optional (with stdenvNoCC;
|
|
# Musl-based platforms will keep "pie", other platforms will not.
|
|
# If you change this, make sure to update section `{#sec-hardening-in-nixpkgs}`
|
|
# in the nixpkgs manual to inform users about the defaults.
|
|
targetPlatform.libc == "musl"
|
|
# Except when:
|
|
# - static aarch64, where compilation works, but produces segfaulting dynamically linked binaries.
|
|
# - static armv7l, where compilation fails.
|
|
&& !(targetPlatform.isAarch && targetPlatform.isStatic)
|
|
) "pie"
|
|
|
|
# Darwin code signing support utilities
|
|
, postLinkSignHook ? null, signingUtils ? null
|
|
}:
|
|
|
|
assert nativeTools -> !propagateDoc && nativePrefix != "";
|
|
assert !nativeTools -> bintools != null && coreutils != null && gnugrep != null;
|
|
assert !(nativeLibc && noLibc);
|
|
assert (noLibc || nativeLibc) == (libc == null);
|
|
|
|
let
|
|
inherit (lib)
|
|
attrByPath
|
|
concatStringsSep
|
|
getBin
|
|
getDev
|
|
getLib
|
|
getName
|
|
getVersion
|
|
hasSuffix
|
|
optional
|
|
optionalAttrs
|
|
optionals
|
|
optionalString
|
|
platforms
|
|
removePrefix
|
|
replaceStrings
|
|
;
|
|
|
|
inherit (stdenvNoCC) hostPlatform targetPlatform;
|
|
|
|
# Prefix for binaries. Customarily ends with a dash separator.
|
|
#
|
|
# TODO(@Ericson2314) Make unconditional, or optional but always true by
|
|
# default.
|
|
targetPrefix = optionalString (targetPlatform != hostPlatform)
|
|
(targetPlatform.config + "-");
|
|
|
|
bintoolsVersion = getVersion bintools;
|
|
bintoolsName = removePrefix targetPrefix (getName bintools);
|
|
|
|
libc_bin = optionalString (libc != null) (getBin libc);
|
|
libc_dev = optionalString (libc != null) (getDev libc);
|
|
libc_lib = optionalString (libc != null) (getLib libc);
|
|
bintools_bin = optionalString (!nativeTools) (getBin bintools);
|
|
# The wrapper scripts use 'cat' and 'grep', so we may need coreutils.
|
|
coreutils_bin = optionalString (!nativeTools) (getBin coreutils);
|
|
|
|
# See description in cc-wrapper.
|
|
suffixSalt = replaceStrings ["-" "."] ["_" "_"] targetPlatform.config;
|
|
|
|
# The dynamic linker has different names on different platforms. This is a
|
|
# shell glob that ought to match it.
|
|
dynamicLinker =
|
|
/**/ if sharedLibraryLoader == null then ""
|
|
else if targetPlatform.libc == "musl" then "${sharedLibraryLoader}/lib/ld-musl-*"
|
|
else if targetPlatform.libc == "uclibc" then "${sharedLibraryLoader}/lib/ld*-uClibc.so.1"
|
|
else if (targetPlatform.libc == "bionic" && targetPlatform.is32bit) then "/system/bin/linker"
|
|
else if (targetPlatform.libc == "bionic" && targetPlatform.is64bit) then "/system/bin/linker64"
|
|
else if targetPlatform.libc == "nblibc" then "${sharedLibraryLoader}/libexec/ld.elf_so"
|
|
else if targetPlatform.system == "i686-linux" then "${sharedLibraryLoader}/lib/ld-linux.so.2"
|
|
else if targetPlatform.system == "x86_64-linux" then "${sharedLibraryLoader}/lib/ld-linux-x86-64.so.2"
|
|
# ELFv1 (.1) or ELFv2 (.2) ABI
|
|
else if targetPlatform.isPower64 then "${sharedLibraryLoader}/lib/ld64.so.*"
|
|
# ARM with a wildcard, which can be "" or "-armhf".
|
|
else if (with targetPlatform; isAarch32 && isLinux) then "${sharedLibraryLoader}/lib/ld-linux*.so.3"
|
|
else if targetPlatform.system == "aarch64-linux" then "${sharedLibraryLoader}/lib/ld-linux-aarch64.so.1"
|
|
else if targetPlatform.system == "powerpc-linux" then "${sharedLibraryLoader}/lib/ld.so.1"
|
|
else if targetPlatform.isMips then "${sharedLibraryLoader}/lib/ld.so.1"
|
|
# `ld-linux-riscv{32,64}-<abi>.so.1`
|
|
else if targetPlatform.isRiscV then "${sharedLibraryLoader}/lib/ld-linux-riscv*.so.1"
|
|
else if targetPlatform.isLoongArch64 then "${sharedLibraryLoader}/lib/ld-linux-loongarch*.so.1"
|
|
else if targetPlatform.isDarwin then "/usr/lib/dyld"
|
|
else if targetPlatform.isFreeBSD then "/libexec/ld-elf.so.1"
|
|
else if hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1"
|
|
else "";
|
|
|
|
in
|
|
|
|
stdenvNoCC.mkDerivation {
|
|
pname = targetPrefix
|
|
+ (if name != "" then name else "${bintoolsName}-wrapper");
|
|
version = optionalString (bintools != null) bintoolsVersion;
|
|
|
|
preferLocalBuild = true;
|
|
|
|
outputs = [ "out" ] ++ optionals propagateDoc ([ "man" ] ++ optional (bintools ? info) "info");
|
|
|
|
passthru = {
|
|
inherit targetPrefix suffixSalt;
|
|
inherit bintools libc nativeTools nativeLibc nativePrefix isGNU isLLVM;
|
|
|
|
emacsBufferSetup = pkgs: ''
|
|
; We should handle propagation here too
|
|
(mapc
|
|
(lambda (arg)
|
|
(when (file-directory-p (concat arg "/lib"))
|
|
(setenv "NIX_LDFLAGS_${suffixSalt}" (concat (getenv "NIX_LDFLAGS_${suffixSalt}") " -L" arg "/lib")))
|
|
(when (file-directory-p (concat arg "/lib64"))
|
|
(setenv "NIX_LDFLAGS_${suffixSalt}" (concat (getenv "NIX_LDFLAGS_${suffixSalt}") " -L" arg "/lib64"))))
|
|
'(${concatStringsSep " " (map (pkg: "\"${pkg}\"") pkgs)}))
|
|
'';
|
|
|
|
inherit defaultHardeningFlags;
|
|
};
|
|
|
|
dontBuild = true;
|
|
dontConfigure = true;
|
|
|
|
enableParallelBuilding = true;
|
|
|
|
unpackPhase = ''
|
|
src=$PWD
|
|
'';
|
|
|
|
installPhase =
|
|
''
|
|
mkdir -p $out/bin $out/nix-support
|
|
|
|
wrap() {
|
|
local dst="$1"
|
|
local wrapper="$2"
|
|
export prog="$3"
|
|
export use_response_file_by_default=${if isCCTools then "1" else "0"}
|
|
substituteAll "$wrapper" "$out/bin/$dst"
|
|
chmod +x "$out/bin/$dst"
|
|
}
|
|
''
|
|
|
|
+ (if nativeTools then ''
|
|
echo ${nativePrefix} > $out/nix-support/orig-bintools
|
|
|
|
ldPath="${nativePrefix}/bin"
|
|
'' else ''
|
|
echo $bintools_bin > $out/nix-support/orig-bintools
|
|
|
|
ldPath="${bintools_bin}/bin"
|
|
''
|
|
|
|
# Solaris needs an additional ld wrapper.
|
|
+ optionalString (targetPlatform.isSunOS && nativePrefix != "") ''
|
|
ldPath="${nativePrefix}/bin"
|
|
exec="$ldPath/${targetPrefix}ld"
|
|
wrap ld-solaris ${./ld-solaris-wrapper.sh}
|
|
'')
|
|
|
|
# If we are asked to wrap `gas` and this bintools has it,
|
|
# then symlink it (`as` will be symlinked next).
|
|
# This is mainly for the wrapped gnat-bootstrap on x86-64 Darwin,
|
|
# as it must have both the GNU assembler from cctools (installed as `gas`)
|
|
# and the Clang integrated assembler (installed as `as`).
|
|
# See pkgs/os-specific/darwin/binutils/default.nix for details.
|
|
+ optionalString wrapGas ''
|
|
if [ -e $ldPath/${targetPrefix}gas ]; then
|
|
ln -s $ldPath/${targetPrefix}gas $out/bin/${targetPrefix}gas
|
|
fi
|
|
''
|
|
|
|
# Create symlinks for rest of the binaries.
|
|
+ ''
|
|
for binary in objdump objcopy size strings as ar nm gprof dwp c++filt addr2line \
|
|
ranlib readelf elfedit dlltool dllwrap windmc windres; do
|
|
if [ -e $ldPath/${targetPrefix}''${binary} ]; then
|
|
ln -s $ldPath/${targetPrefix}''${binary} $out/bin/${targetPrefix}''${binary}
|
|
fi
|
|
done
|
|
|
|
'' + (if !useMacosReexportHack then ''
|
|
if [ -e ''${ld:-$ldPath/${targetPrefix}ld} ]; then
|
|
wrap ${targetPrefix}ld ${./ld-wrapper.sh} ''${ld:-$ldPath/${targetPrefix}ld}
|
|
fi
|
|
'' else ''
|
|
ldInner="${targetPrefix}ld-reexport-delegate"
|
|
wrap "$ldInner" ${./macos-sierra-reexport-hack.bash} ''${ld:-$ldPath/${targetPrefix}ld}
|
|
wrap "${targetPrefix}ld" ${./ld-wrapper.sh} "$out/bin/$ldInner"
|
|
unset ldInner
|
|
'') + ''
|
|
|
|
for variant in $ldPath/${targetPrefix}ld.*; do
|
|
basename=$(basename "$variant")
|
|
wrap $basename ${./ld-wrapper.sh} $variant
|
|
done
|
|
'';
|
|
|
|
strictDeps = true;
|
|
depsTargetTargetPropagated = extraPackages;
|
|
|
|
setupHooks = [
|
|
../setup-hooks/role.bash
|
|
./setup-hook.sh
|
|
];
|
|
|
|
postFixup =
|
|
##
|
|
## General libc support
|
|
##
|
|
optionalString (libc != null) (''
|
|
touch "$out/nix-support/libc-ldflags"
|
|
echo "-L${libc_lib}${libc.libdir or "/lib"}" >> $out/nix-support/libc-ldflags
|
|
|
|
echo "${libc_lib}" > $out/nix-support/orig-libc
|
|
echo "${libc_dev}" > $out/nix-support/orig-libc-dev
|
|
''
|
|
|
|
##
|
|
## Dynamic linker support
|
|
##
|
|
+ optionalString (sharedLibraryLoader != null) ''
|
|
if [[ -z ''${dynamicLinker+x} ]]; then
|
|
echo "Don't know the name of the dynamic linker for platform '${targetPlatform.config}', so guessing instead." >&2
|
|
local dynamicLinker="${sharedLibraryLoader}/lib/ld*.so.?"
|
|
fi
|
|
''
|
|
|
|
# Expand globs to fill array of options
|
|
+ ''
|
|
dynamicLinker=($dynamicLinker)
|
|
|
|
case ''${#dynamicLinker[@]} in
|
|
0) echo "No dynamic linker found for platform '${targetPlatform.config}'." >&2;;
|
|
1) echo "Using dynamic linker: '$dynamicLinker'" >&2;;
|
|
*) echo "Multiple dynamic linkers found for platform '${targetPlatform.config}'." >&2;;
|
|
esac
|
|
|
|
if [ -n "''${dynamicLinker-}" ]; then
|
|
echo $dynamicLinker > $out/nix-support/dynamic-linker
|
|
|
|
${if targetPlatform.isDarwin then ''
|
|
printf "export LD_DYLD_PATH=%q\n" "$dynamicLinker" >> $out/nix-support/setup-hook
|
|
'' else optionalString (sharedLibraryLoader != null) ''
|
|
if [ -e ${sharedLibraryLoader}/lib/32/ld-linux.so.2 ]; then
|
|
echo ${sharedLibraryLoader}/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
|
|
fi
|
|
touch $out/nix-support/ld-set-dynamic-linker
|
|
''}
|
|
fi
|
|
'')
|
|
|
|
##
|
|
## User env support
|
|
##
|
|
|
|
# Propagate the underling unwrapped bintools so that if you
|
|
# install the wrapper, you get tools like objdump (same for any
|
|
# binaries of libc).
|
|
+ optionalString (!nativeTools) ''
|
|
printWords ${bintools_bin} ${optionalString (libc != null) libc_bin} > $out/nix-support/propagated-user-env-packages
|
|
''
|
|
|
|
##
|
|
## Man page and info support
|
|
##
|
|
+ optionalString propagateDoc (''
|
|
ln -s ${bintools.man} $man
|
|
'' + optionalString (bintools ? info) ''
|
|
ln -s ${bintools.info} $info
|
|
'')
|
|
|
|
##
|
|
## Hardening support
|
|
##
|
|
|
|
# some linkers on some platforms don't support specific -z flags
|
|
+ ''
|
|
export hardening_unsupported_flags=""
|
|
if [[ "$($ldPath/${targetPrefix}ld -z now 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
|
|
hardening_unsupported_flags+=" bindnow"
|
|
fi
|
|
if [[ "$($ldPath/${targetPrefix}ld -z relro 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
|
|
hardening_unsupported_flags+=" relro"
|
|
fi
|
|
''
|
|
|
|
+ optionalString hostPlatform.isCygwin ''
|
|
hardening_unsupported_flags+=" pic"
|
|
''
|
|
|
|
+ optionalString (targetPlatform.isAvr || targetPlatform.isWindows) ''
|
|
hardening_unsupported_flags+=" relro bindnow"
|
|
''
|
|
|
|
+ optionalString (libc != null && targetPlatform.isAvr) ''
|
|
for isa in avr5 avr3 avr4 avr6 avr25 avr31 avr35 avr51 avrxmega2 avrxmega4 avrxmega5 avrxmega6 avrxmega7 tiny-stack; do
|
|
echo "-L${getLib libc}/avr/lib/$isa" >> $out/nix-support/libc-cflags
|
|
done
|
|
''
|
|
|
|
+ optionalString targetPlatform.isDarwin ''
|
|
echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/libc-ldflags
|
|
''
|
|
|
|
##
|
|
## GNU specific extra strip flags
|
|
##
|
|
|
|
# TODO(@sternenseemann): make a generic strip wrapper?
|
|
+ optionalString (bintools.isGNU or false) ''
|
|
wrap ${targetPrefix}strip ${./gnu-binutils-strip-wrapper.sh} \
|
|
"${bintools_bin}/bin/${targetPrefix}strip"
|
|
''
|
|
|
|
###
|
|
### Remove certain timestamps from final binaries
|
|
###
|
|
+ optionalString (targetPlatform.isDarwin && !(bintools.isGNU or false)) ''
|
|
echo "export ZERO_AR_DATE=1" >> $out/nix-support/setup-hook
|
|
''
|
|
|
|
+ ''
|
|
for flags in "$out/nix-support"/*flags*; do
|
|
substituteInPlace "$flags" --replace $'\n' ' '
|
|
done
|
|
|
|
substituteAll ${./add-flags.sh} $out/nix-support/add-flags.sh
|
|
substituteAll ${./add-hardening.sh} $out/nix-support/add-hardening.sh
|
|
substituteAll ${../wrapper-common/utils.bash} $out/nix-support/utils.bash
|
|
''
|
|
|
|
###
|
|
### Ensure consistent LC_VERSION_MIN_MACOSX
|
|
###
|
|
+ optionalString targetPlatform.isDarwin (
|
|
let
|
|
inherit (targetPlatform)
|
|
darwinPlatform darwinSdkVersion
|
|
darwinMinVersion darwinMinVersionVariable;
|
|
in ''
|
|
export darwinPlatform=${darwinPlatform}
|
|
export darwinMinVersion=${darwinMinVersion}
|
|
export darwinSdkVersion=${darwinSdkVersion}
|
|
export darwinMinVersionVariable=${darwinMinVersionVariable}
|
|
substituteAll ${./add-darwin-ldflags-before.sh} $out/nix-support/add-local-ldflags-before.sh
|
|
''
|
|
)
|
|
|
|
##
|
|
## Code signing on Apple Silicon
|
|
##
|
|
+ optionalString (targetPlatform.isDarwin && targetPlatform.isAarch64) ''
|
|
echo 'source ${postLinkSignHook}' >> $out/nix-support/post-link-hook
|
|
|
|
export signingUtils=${signingUtils}
|
|
|
|
wrap \
|
|
${targetPrefix}install_name_tool \
|
|
${./darwin-install_name_tool-wrapper.sh} \
|
|
"${bintools_bin}/bin/${targetPrefix}install_name_tool"
|
|
|
|
wrap \
|
|
${targetPrefix}strip ${./darwin-strip-wrapper.sh} \
|
|
"${bintools_bin}/bin/${targetPrefix}strip"
|
|
''
|
|
|
|
##
|
|
## Extra custom steps
|
|
##
|
|
+ extraBuildCommands;
|
|
|
|
env = {
|
|
# for substitution in utils.bash
|
|
# TODO(@sternenseemann): invent something cleaner than passing in "" in case of absence
|
|
expandResponseParams = "${expand-response-params}/bin/expand-response-params";
|
|
# TODO(@sternenseemann): rename env var via stdenv rebuild
|
|
shell = (getBin runtimeShell + runtimeShell.shellPath or "");
|
|
gnugrep_bin = optionalString (!nativeTools) gnugrep;
|
|
wrapperName = "BINTOOLS_WRAPPER";
|
|
inherit dynamicLinker targetPrefix suffixSalt coreutils_bin;
|
|
inherit bintools_bin libc_bin libc_dev libc_lib;
|
|
default_hardening_flags_str = builtins.toString defaultHardeningFlags;
|
|
};
|
|
|
|
meta =
|
|
let bintools_ = optionalAttrs (bintools != null) bintools; in
|
|
(optionalAttrs (bintools_ ? meta) (removeAttrs bintools.meta ["priority"])) //
|
|
{ description =
|
|
attrByPath ["meta" "description"] "System binary utilities" bintools_
|
|
+ " (wrapper script)";
|
|
priority = 10;
|
|
} // optionalAttrs useMacosReexportHack {
|
|
platforms = platforms.darwin;
|
|
};
|
|
}
|