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# Copyright 2022-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit edo flag-o-matic toolchain-funcs
# Versioning is just the GCC version in full (so may include a snapshot
# date). Unlike dev-util/mingw64-toolchain, which this ebuild was heavily
# inspired by, there's no "third component" here to version on, just
# GCC + binutils.
#
# Do _p1++ rather than revbump on Binutils changes
# Not using Gentoo patchsets for simplicity, their changes are mostly unneeded here.
GCC_PV=${PV%_p*}
BINUTILS_PV=2.43.1
DESCRIPTION="All-in-one bpf toolchain for building DTrace and systemd without crossdev"
HOMEPAGE="
https://gcc.gnu.org/
https://sourceware.org/binutils/
https://gcc.gnu.org/wiki/BPFBackEnd
"
SRC_URI="
mirror://gnu/binutils/binutils-${BINUTILS_PV}.tar.xz
"
if [[ ${GCC_PV} == *-* ]]; then
SRC_URI+=" mirror://gcc/snapshots/${GCC_PV}/gcc-${GCC_PV}.tar.xz"
else
SRC_URI+="
mirror://gcc/gcc-${GCC_PV}/gcc-${GCC_PV}.tar.xz
mirror://gnu/gcc/gcc-${GCC_PV}/gcc-${GCC_PV}.tar.xz
"
fi
S="${WORKDIR}"
# l1:binutils+gcc, l2:gcc(libraries)
LICENSE="
GPL-3+
LGPL-3+ || ( GPL-3+ libgcc libstdc++ gcc-runtime-library-exception-3.1 )
"
SLOT="0"
KEYWORDS="~amd64 ~arm64 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
IUSE="+bin-symlinks custom-cflags +strip"
RDEPEND="
dev-libs/gmp:=
dev-libs/mpc:=
dev-libs/mpfr:=
sys-libs/zlib:=
virtual/libiconv
bin-symlinks? (
!cross-bpf-unknown-none/binutils
!cross-bpf-unknown-none/gcc
)
"
DEPEND="${RDEPEND}"
PATCHES=()
pkg_pretend() {
[[ ${MERGE_TYPE} == binary ]] && return
tc-is-cross-compiler &&
die "cross-compilation of the toolchain itself is unsupported"
}
src_prepare() {
# rename directories to simplify both patching and the ebuild
mv binutils{-${BINUTILS_PV},} || die
mv gcc{-${GCC_PV},} || die
default
}
src_compile() {
# src_compile is kept similar to dev-util/mingw64-toolchain
# at least for now for ease of comparison etc.
#
# not great but do everything in src_compile given bootstrapping
# process needs to be done in steps of configure+compile+install
# (done modular to have most package-specific things in one place)
CTARGET=bpf-unknown-none
BPFT_D=${T}/root # moved to ${D} in src_install
local bpftdir=/usr/lib/${PN}
local prefix=${EPREFIX}${bpftdir}
local sysroot=${BPFT_D}${prefix}
local -x PATH=${sysroot}/bin:${PATH}
use custom-cflags || strip-flags # fancy flags are not realistic here
# global configure flags
local conf=(
--build=${CBUILD:-${CHOST}}
--target=${CTARGET}
--{doc,info,man}dir=/.skip # let the real binutils+gcc handle docs
MAKEINFO=: #922230
)
# binutils
local conf_binutils=(
--prefix="${prefix}"
--host=${CHOST}
--disable-cet
--disable-default-execstack
--disable-nls
--disable-shared
--with-system-zlib
--without-debuginfod
--without-msgpack
--without-zstd
)
# gcc (minimal -- if need more, disable only in stage1 / enable in stage3)
local conf_gcc=(
--prefix="${prefix}"
--host=${CHOST}
--disable-bootstrap
--disable-cc1
--disable-cet
--disable-gcov #843989
--disable-gomp
--disable-nls # filename collisions
--disable-libcc1
--disable-libquadmath
--disable-libsanitizer
--disable-libssp
--disable-libvtv
--disable-shared
--disable-werror
--enable-languages=c
--with-gcc-major-version-only
--with-system-zlib
--without-isl
--without-zstd
--disable-multilib
)
# libstdc++ may misdetect sys/sdt.h on systemtap-enabled system and fail
# (not passed in conf_gcc above given it is lost in sub-configure calls)
local -x glibcxx_cv_sys_sdt_h=no
# bpft-build <path/package-name>
# -> ./configure && make && make install && bpft-package()
# passes conf and conf_package to configure, and users can add options
# through environment with e.g.
# BPFT_BINUTILS_CONF="--some-option"
# EXTRA_ECONF="--global-option" (generic naming for if not reading this)
bpft-build() {
local id=${1##*/}
local build_dir=${WORKDIR}/${1}-build
# econf is not allowed in src_compile and its defaults are
# mostly unused here, so use configure directly
local conf=( "${WORKDIR}/${1}"/configure "${conf[@]}" )
local -n conf_id=conf_${id}
[[ ${conf_id@a} == *a* ]] && conf+=( "${conf_id[@]}" )
local -n extra_id=BPFT_${id^^}_CONF
conf+=( ${EXTRA_ECONF} ${extra_id} )
einfo "Building ${id} in ${build_dir} ..."
mkdir -p "${build_dir}" || die
pushd "${build_dir}" >/dev/null || die
edo "${conf[@]}"
emake MAKEINFO=: V=1
# -j1 to match bug #906155, other packages may be fragile too
emake -j1 MAKEINFO=: V=1 DESTDIR="${BPFT_D}" install
declare -f bpft-${id} >/dev/null && edo bpft-${id}
popd >/dev/null || die
}
# build with same ordering that crossdev would do
bpft-build binutils
bpft-build gcc
if use bin-symlinks; then
mkdir -p -- "${BPFT_D}${EPREFIX}"/usr/bin/ || die
local bin
for bin in "${sysroot}"/bin/*; do
ln -rs -- "${bin}" "${BPFT_D}${EPREFIX}"/usr/bin/ || die
done
fi
# Delete libdep.a, which has a colliding name and is useless for bpf,
# which does not make use of cross-library dependencies: the libdep.a
# for the native binutils will do.
rm -f ${sysroot}/lib/bfd-plugins/libdep.a || die
# portage doesn't know the right strip executable to use for CTARGET
# and it can lead to .a mangling, notably with 32bit (breaks toolchain)
dostrip -x ${bpftdir}/{${CTARGET}/lib{,32},lib/gcc/${CTARGET}}
# TODO: Check if this is worth doing, it may not be
if use strip; then
einfo "Stripping ${CTARGET} static libraries ..."
find "${sysroot}"/{,lib/gcc/}${CTARGET} -type f -name '*.a' \
-exec ${CTARGET}-strip --strip-unneeded {} + || die
fi
}
src_install() {
mv "${BPFT_D}${EPREFIX}"/* "${ED}" || die
find "${ED}" -type f -name '*.la' -delete || die
}
pkg_postinst() {
use bin-symlinks && has_version dev-util/shadowman && [[ ! ${ROOT} ]] &&
eselect compiler-shadow update all
if [[ ! ${REPLACING_VERSIONS} ]]; then
elog "Note that this package is primarily intended for DTrace, systemd, and related"
elog "packages to depend on without needing a manual crossdev setup."
elog
elog "Settings are oriented only for what these need and simplicity."
elog "Use sys-devel/crossdev if need full toolchain/customization:"
elog " https://wiki.gentoo.org/wiki/Crossdev"
fi
}
pkg_postrm() {
use bin-symlinks && has_version dev-util/shadowman && [[ ! ${ROOT} ]] &&
eselect compiler-shadow clean all
}
|
