core/pkgs/by-name/gc/gcc/common/builder.nix
2024-05-13 22:24:10 +01:00

298 lines
12 KiB
Nix

{ lib, stdenv, enableMultilib, targetConfig }:
let
forceLibgccToBuildCrtStuff =
import ./libgcc-buildstuff.nix { inherit lib stdenv; };
in originalAttrs:
(stdenv.mkDerivation (finalAttrs:
originalAttrs // {
passthru = (originalAttrs.passthru or { }) // {
inherit forceLibgccToBuildCrtStuff;
};
preUnpack = ''
oldOpts="$(shopt -po nounset)" || true
set -euo pipefail
export NIX_FIXINC_DUMMY="$NIX_BUILD_TOP/dummy"
mkdir "$NIX_FIXINC_DUMMY"
if test "$staticCompiler" = "1"; then
EXTRA_LDFLAGS="-static"
else
EXTRA_LDFLAGS="-Wl,-rpath,''${!outputLib}/lib"
fi
# GCC interprets empty paths as ".", which we don't want.
if test -z "''${CPATH-}"; then unset CPATH; fi
if test -z "''${LIBRARY_PATH-}"; then unset LIBRARY_PATH; fi
echo "\$CPATH is \`''${CPATH-}'"
echo "\$LIBRARY_PATH is \`''${LIBRARY_PATH-}'"
if test "$noSysDirs" = "1"; then
declare -g \
EXTRA_FLAGS_FOR_BUILD EXTRA_FLAGS EXTRA_FLAGS_FOR_TARGET \
EXTRA_LDFLAGS_FOR_BUILD EXTRA_LDFLAGS_FOR_TARGET
# Extract flags from Bintools Wrappers
for post in '_FOR_BUILD' ""; do
curBintools="NIX_BINTOOLS''${post}"
declare -a extraLDFlags=()
if [[ -e "''${!curBintools}/nix-support/orig-libc" ]]; then
# Figure out what extra flags when linking to pass to the gcc
# compilers being generated to make sure that they use our libc.
extraLDFlags=($(< "''${!curBintools}/nix-support/libc-ldflags") $(< "''${!curBintools}/nix-support/libc-ldflags-before" || true))
if [ -e ''${!curBintools}/nix-support/ld-set-dynamic-linker ]; then
extraLDFlags=-dynamic-linker=$(< ''${!curBintools}/nix-support/dynamic-linker)
fi
# The path to the Libc binaries such as `crti.o'.
libc_libdir="$(< "''${!curBintools}/nix-support/orig-libc")/lib"
else
# Hack: support impure environments.
extraLDFlags=("-L/usr/lib64" "-L/usr/lib")
libc_libdir="/usr/lib"
fi
extraLDFlags=("-L$libc_libdir" "-rpath" "$libc_libdir"
"''${extraLDFlags[@]}")
for i in "''${extraLDFlags[@]}"; do
declare -g EXTRA_LDFLAGS''${post}+=" -Wl,$i"
done
done
# Extract flags from CC Wrappers
for post in '_FOR_BUILD' ""; do
curCC="NIX_CC''${post}"
curFIXINC="NIX_FIXINC_DUMMY''${post}"
declare -a extraFlags=()
if [[ -e "''${!curCC}/nix-support/orig-libc" ]]; then
# Figure out what extra compiling flags to pass to the gcc compilers
# being generated to make sure that they use our libc.
extraFlags=($(< "''${!curCC}/nix-support/libc-crt1-cflags") $(< "''${!curCC}/nix-support/libc-cflags"))
# The path to the Libc headers
libc_devdir="$(< "''${!curCC}/nix-support/orig-libc-dev")"
# Use *real* header files, otherwise a limits.h is generated that
# does not include Libc's limits.h (notably missing SSIZE_MAX,
# which breaks the build).
declare -g NIX_FIXINC_DUMMY''${post}="$libc_devdir/include"
else
# Hack: support impure environments.
extraFlags=("-isystem" "/usr/include")
declare -g NIX_FIXINC_DUMMY''${post}=/usr/include
fi
extraFlags=("-I''${!curFIXINC}" "''${extraFlags[@]}")
# BOOT_CFLAGS defaults to `-g -O2'; since we override it below, make
# sure to explictly add them so that files compiled with the bootstrap
# compiler are optimized and (optionally) contain debugging information
# (info "(gccinstall) Building").
if test -n "''${dontStrip-}"; then
extraFlags=("-O2" "-g" "''${extraFlags[@]}")
else
# Don't pass `-g' at all; this saves space while building.
extraFlags=("-O2" "''${extraFlags[@]}")
fi
declare -g EXTRA_FLAGS''${post}="''${extraFlags[*]}"
done
if test -z "''${targetConfig-}"; then
# host = target, so the flags are the same
EXTRA_FLAGS_FOR_TARGET="$EXTRA_FLAGS"
EXTRA_LDFLAGS_FOR_TARGET="$EXTRA_LDFLAGS"
fi
# CFLAGS_FOR_TARGET are needed for the libstdc++ configure script to find
# the startfiles.
# FLAGS_FOR_TARGET are needed for the target libraries to receive the -Bxxx
# for the startfiles.
makeFlagsArray+=(
"BUILD_SYSTEM_HEADER_DIR=$NIX_FIXINC_DUMMY_FOR_BUILD"
"SYSTEM_HEADER_DIR=$NIX_FIXINC_DUMMY_FOR_BUILD"
"NATIVE_SYSTEM_HEADER_DIR=$NIX_FIXINC_DUMMY"
"LDFLAGS_FOR_BUILD=$EXTRA_LDFLAGS_FOR_BUILD"
#"LDFLAGS=$EXTRA_LDFLAGS"
"LDFLAGS_FOR_TARGET=$EXTRA_LDFLAGS_FOR_TARGET"
"CFLAGS_FOR_BUILD=$EXTRA_FLAGS_FOR_BUILD $EXTRA_LDFLAGS_FOR_BUILD"
"CXXFLAGS_FOR_BUILD=$EXTRA_FLAGS_FOR_BUILD $EXTRA_LDFLAGS_FOR_BUILD"
"FLAGS_FOR_BUILD=$EXTRA_FLAGS_FOR_BUILD $EXTRA_LDFLAGS_FOR_BUILD"
# It seems there is a bug in GCC 5
#"CFLAGS=$EXTRA_FLAGS $EXTRA_LDFLAGS"
#"CXXFLAGS=$EXTRA_FLAGS $EXTRA_LDFLAGS"
"CFLAGS_FOR_TARGET=$EXTRA_FLAGS_FOR_TARGET $EXTRA_LDFLAGS_FOR_TARGET"
"CXXFLAGS_FOR_TARGET=$EXTRA_FLAGS_FOR_TARGET $EXTRA_LDFLAGS_FOR_TARGET"
"FLAGS_FOR_TARGET=$EXTRA_FLAGS_FOR_TARGET $EXTRA_LDFLAGS_FOR_TARGET"
)
if test -z "''${targetConfig-}"; then
makeFlagsArray+=(
"BOOT_CFLAGS=$EXTRA_FLAGS $EXTRA_LDFLAGS"
"BOOT_LDFLAGS=$EXTRA_FLAGS_FOR_TARGET $EXTRA_LDFLAGS_FOR_TARGET"
)
fi
if test "$withoutTargetLibc" == 1; then
# We don't want the gcc build to assume there will be a libc providing
# limits.h in this stage
makeFlagsArray+=(
'LIMITS_H_TEST=false'
)
else
makeFlagsArray+=(
'LIMITS_H_TEST=true'
)
fi
fi
eval "$oldOpts"
'';
preConfigure = (originalAttrs.preConfigure or "") + ''
if test -n "$newlibSrc"; then
tar xvf "$newlibSrc" -C ..
ln -s ../newlib-*/newlib newlib
# Patch to get armvt5el working:
sed -i -e 's/ arm)/ arm*)/' newlib/configure.host
fi
# Bug - they packaged zlib
if test -d "zlib"; then
# This breaks the build without-headers, which should build only
# the target libgcc as target libraries.
# See 'configure:5370'
rm -Rf zlib
fi
if test -n "$crossMingw" -a -n "$withoutTargetLibc"; then
mkdir -p ../mingw
# --with-build-sysroot expects that:
cp -R $libcCross/include ../mingw
configureFlags="$configureFlags --with-build-sysroot=`pwd`/.."
fi
# Perform the build in a different directory.
mkdir ../build
cd ../build
configureScript=../$sourceRoot/configure
'';
postConfigure = ''
# Avoid store paths when embedding ./configure flags into gcc.
# Mangled arguments are still useful when reporting bugs upstream.
sed -e "/TOPLEVEL_CONFIGURE_ARGUMENTS=/ s|$NIX_STORE/[a-z0-9]\{32\}-|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" -i Makefile
'';
preInstall = ''
mkdir -p "$out/''${targetConfig}/lib"
mkdir -p "''${!outputLib}/''${targetConfig}/lib"
'' +
# if cross-compiling, link from $lib/lib to $lib/${targetConfig}.
# since native-compiles have $lib/lib as a directory (not a
# symlink), this ensures that in every case we can assume that
# $lib/lib contains the .so files
lib.optionalString
(with stdenv; targetPlatform.config != hostPlatform.config) ''
ln -Ts "''${!outputLib}/''${targetConfig}/lib" $lib/lib
'' +
# Make `lib64` symlinks to `lib`.
lib.optionalString (!enableMultilib && stdenv.hostPlatform.is64bit
&& !stdenv.hostPlatform.isMips64n32) ''
ln -s lib "$out/''${targetConfig}/lib64"
ln -s lib "''${!outputLib}/''${targetConfig}/lib64"
'' +
# On mips platforms, gcc follows the IRIX naming convention:
#
# $PREFIX/lib = mips32
# $PREFIX/lib32 = mips64n32
# $PREFIX/lib64 = mips64
#
# Make `lib32` symlinks to `lib`.
lib.optionalString
(!enableMultilib && stdenv.targetPlatform.isMips64n32) ''
ln -s lib "$out/''${targetConfig}/lib32"
ln -s lib "''${!outputLib}/''${targetConfig}/lib32"
'';
postInstall = ''
# Move runtime libraries to lib output.
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.so*" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.la" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.dylib" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.dll.a" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.dll" "''${!outputLib}"
moveToOutput "share/gcc-*/python" "''${!outputLib}"
if [ -z "$enableShared" ]; then
moveToOutput "''${targetConfig+$targetConfig/}lib/lib*.a" "''${!outputLib}"
fi
for i in "''${!outputLib}/''${targetConfig}"/lib/*.{la,py}; do
substituteInPlace "$i" --replace "$out" "''${!outputLib}"
done
if [ -n "$enableMultilib" ]; then
moveToOutput "''${targetConfig+$targetConfig/}lib64/lib*.so*" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib64/lib*.la" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib64/lib*.dylib" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib64/lib*.dll.a" "''${!outputLib}"
moveToOutput "''${targetConfig+$targetConfig/}lib64/lib*.dll" "''${!outputLib}"
for i in "''${!outputLib}/''${targetConfig}"/lib64/*.{la,py}; do
substituteInPlace "$i" --replace "$out" "''${!outputLib}"
done
fi
# Remove `fixincl' to prevent a retained dependency on the
# previous gcc.
rm -rf $out/libexec/gcc/*/*/install-tools
rm -rf $out/lib/gcc/*/*/install-tools
# More dependencies with the previous gcc or some libs (gccbug stores the build command line)
rm -rf $out/bin/gccbug
if type "install_name_tool"; then
for i in "''${!outputLib}"/lib/*.*.dylib "''${!outputLib}"/lib/*.so.[0-9]; do
install_name_tool -id "$i" "$i" || true
for old_path in $(otool -L "$i" | grep "$out" | awk '{print $1}'); do
new_path=`echo "$old_path" | sed "s,$out,''${!outputLib},"`
install_name_tool -change "$old_path" "$new_path" "$i" || true
done
done
fi
# Get rid of some "fixed" header files
rm -rfv $out/lib/gcc/*/*/include-fixed/{root,linux,sys/mount.h,bits/statx.h}
# Replace hard links for i686-pc-linux-gnu-gcc etc. with symlinks.
for i in $out/bin/*-gcc*; do
if cmp -s $out/bin/gcc $i; then
ln -sfn gcc $i
fi
done
for i in $out/bin/c++ $out/bin/*-c++* $out/bin/*-g++*; do
if cmp -s $out/bin/g++ $i; then
ln -sfn g++ $i
fi
done
# Two identical man pages are shipped (moving and compressing is done later)
for i in "$out"/share/man/man1/*g++.1; do
if test -e "$i"; then
man_prefix=`echo "$i" | sed "s,.*/\(.*\)g++.1,\1,"`
ln -sf "$man_prefix"gcc.1 "$i"
fi
done
'';
}))