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|
{ lib, stdenv, makeWrapper, binutils-unwrapped, cctools, llvm, clang-unwrapped, dualAs ? false }:
# Make sure both underlying packages claim to have prepended their binaries
# with the same targetPrefix.
assert binutils-unwrapped.targetPrefix == cctools.targetPrefix;
let
inherit (binutils-unwrapped) targetPrefix;
cmds = [
"ar" "ranlib" "as" "install_name_tool"
"ld" "strip" "otool" "lipo" "nm" "strings" "size"
"codesign_allocate"
];
isCCToolsLLVM = lib.getName cctools == "cctools-llvm";
in
# TODO: loop over targetPrefixed binaries too
stdenv.mkDerivation {
pname = "${targetPrefix}cctools-binutils-darwin" + lib.optionalString dualAs "-dualas";
inherit (cctools) version;
outputs = [ "out" "man" ];
buildCommand = ''
mkdir -p $out/bin $out/include
ln -s ${binutils-unwrapped.out}/bin/${targetPrefix}c++filt $out/bin/${targetPrefix}c++filt
# We specifically need:
# - ld: binutils doesn't provide it on darwin
# - as: as above
# - ar: the binutils one produces .a files that the cctools ld doesn't like
# - ranlib: for compatibility with ar
# - otool: we use it for some of our name mangling
# - install_name_tool: we use it to rewrite stuff in our bootstrap tools
# - strip: the binutils one seems to break mach-o files
# - lipo: gcc build assumes it exists
# - nm: the gnu one doesn't understand many new load commands
for i in ${lib.concatStringsSep " " (map (e: targetPrefix + e) cmds)}; do
ln -sf "${cctools}/bin/$i" "$out/bin/$i"
done
ln -s ${llvm}/bin/dsymutil $out/bin/dsymutil
ln -s ${binutils-unwrapped.out}/share $out/share
mkdir -p "$man"/share/man/man{1,5}
for i in ${lib.concatStringsSep " " cmds}; do
for path in "${cctools.man}"/share/man/man?/$i.*; do
dest_path="$man''${path#${cctools.man}}"
ln -sv "$path" "$dest_path"
done
done
''
+ lib.optionalString (!isCCToolsLLVM) (
# cctools-port has a `libexec` folder for `as`, but cctools-llvm uses the clang
# assembler on both platforms. Only link it when cctools is cctools-port.
''
ln -s ${cctools}/libexec $out/libexec
''
# cctools-llvm uses the LLVM assembler on both architectures, so use the assembler
# from that instead of relinking it.
#
# On aarch64-darwin we must use clang, because "as" from cctools just doesn't
# handle the arch. Proxying calls to clang produces quite a bit of warnings,
# and using clang directly here is a better option than relying on cctools.
# On x86_64-darwin the Clang version is too old to support this mode.
+ lib.optionalString stdenv.isAarch64 ''
rm $out/bin/${targetPrefix}as
makeWrapper "${clang-unwrapped}/bin/clang" "$out/bin/${targetPrefix}as" \
--add-flags "-x assembler -integrated-as -c"
''
# x86-64 Darwin gnat-bootstrap emits assembly
# with MOVQ as the mnemonic for quadword interunit moves
# such as `movq %rbp, %xmm0`.
# The clang integrated assembler recognises this as valid,
# but unfortunately the cctools-port GNU assembler does not;
# it instead uses MOVD as the mnemonic.
# The assembly that a GCC build emits is determined at build time
# and cannot be changed afterwards.
#
# To build GNAT on x86-64 Darwin, therefore,
# we need both the clang _and_ the cctools-port assemblers to be available:
# the former to build at least the stage1 compiler,
# and the latter at least to be detectable
# as the target for the final compiler.
#
# We choose to match the Aarch64 case above,
# wrapping the clang integrated assembler as `as`.
# It then seems sensible to wrap the cctools GNU assembler as `gas`.
#
+ lib.optionalString (stdenv.isx86_64 && dualAs) ''
mv $out/bin/${targetPrefix}as $out/bin/${targetPrefix}gas
makeWrapper "${clang-unwrapped}/bin/clang" "$out/bin/${targetPrefix}as" \
--add-flags "-x assembler -integrated-as -c"
''
);
nativeBuildInputs = lib.optionals (!isCCToolsLLVM && (stdenv.isAarch64 || dualAs)) [ makeWrapper ];
passthru = {
inherit targetPrefix;
isCCTools = true;
};
meta = {
maintainers = with lib.maintainers; [ matthewbauer ];
priority = 10;
};
}
|
