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306 lines
10 KiB
306 lines
10 KiB
# vim:set ft=sh:
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git clone --depth=1 --recursive https://github.com/fosslinux/live-bootstrap
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cd live-bootstrap
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./download-distfiles.sh
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./rootfs.py -c --external-sources --cores $(nproc)
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umount target/dev/shm # double mounted?
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umount target/dev/shm target/sys target/proc target/tmp
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# Optional: back up the system
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env -i chroot target tar --sort=name -cf /target.tar /
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env -i chroot target bzip2 -9v /target.tar
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# Goal:
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# install cross compiler in /cross
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# cross compiled system in /gentoo
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mount -t proc proc target/proc
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mount -t sysfs sysfs target/sys
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mount -t devtmpfs devtmpfs target/dev
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mount -t devpts devpts target/dev/pts
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env -i chroot target
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source /steps/env
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cd /tmp
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curl -LO https://github.com/ninja-build/ninja/archive/v1.11.1/ninja-1.11.1.tar.gz
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curl -LO https://github.com/mesonbuild/meson/releases/download/1.4.1/meson-1.4.1.tar.gz
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curl -LO http://gitweb.gentoo.org/proj/portage.git/snapshot/portage-3.0.65.tar.bz2
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curl -LO https://github.com/plougher/squashfs-tools/archive/refs/tags/4.6.1/squashfs-tools-4.6.1.tar.gz
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curl -LO http://distfiles.gentoo.org/snapshots/squashfs/gentoo-20240729.xz.sqfs
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cat > portage.patch << 'EOF'
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+++ b/lib/portage/util/compression_probe.py
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@@ -1,13 +1,13 @@
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# Copyright 2015-2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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-import ctypes
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import errno
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import re
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from portage import _encodings, _unicode_encode
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from portage.exception import FileNotFound, PermissionDenied
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+from portage.util._ctypes import ctypes
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_compressors = {
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"bzip2": {
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@@ -49,7 +49,7 @@ _compressors = {
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# if the current architecture can support it, which is true when
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# sizeof(long) is at least 8 bytes.
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"decompress": "zstd -d"
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- + (" --long=31" if ctypes.sizeof(ctypes.c_long) >= 8 else ""),
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+ + (" --long=31" if ctypes and ctypes.sizeof(ctypes.c_long) >= 8 else ""),
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"package": "app-arch/zstd",
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},
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}
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EOF
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tar xf ninja-1.11.1.tar.gz
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cd ninja-1.11.1
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./configure.py --bootstrap
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install -m755 ninja /usr/bin
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cd ..
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rm -rf ninja-1.11.1
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tar xf meson-1.4.1.tar.gz
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cd meson-1.4.1
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python setup.py install
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cd ..
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rm -rf meson-1.4.1
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tar xf portage-3.0.65.tar.bz2
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cd portage-3.0.65
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patch -p1 -i ../portage.patch
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meson setup build --prefix /usr
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meson install -C build
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cd ..
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rm -rf portage-3.0.65
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tar xf squashfs-tools-4.6.1.tar.gz
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cd squashfs-tools-4.6.1
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make -C squashfs-tools install \
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INSTALL_PREFIX=/usr \
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XZ_SUPPORT=1
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cd ..
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rm -rf squashfs-tools-4.6.1
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unsquashfs gentoo-20240729.xz.sqfs
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mkdir -p /var/db/repos
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rm -rf /var/db/repos/gentoo
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mv squashfs-root /var/db/repos/gentoo
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# Configure portage
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echo 'portage:x:250:250:portage:/var/tmp/portage:/bin/false' >> /etc/passwd
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echo 'portage::250:portage' >> /etc/group
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mkdir -p /etc/portage/make.profile
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cat > /etc/portage/make.profile/make.defaults << 'EOF'
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FEATURES="-news -sandbox -usersandbox -pid-sandbox -parallel-fetch"
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BINPKG_COMPRESS="bzip2"
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ARCH="x86"
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ABI="$ARCH"
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DEFAULT_ABI="$ARCH"
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ACCEPT_KEYWORDS="$ARCH"
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CHOST="i386-unknown-linux-musl"
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LIBDIR_x86="lib/i386-unknown-linux-musl"
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PKG_CONFIG_PATH="/usr/lib/i386-unknown-linux-musl/pkgconfig"
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PYTHON_COMPAT_OVERRIDE="python3_11"
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IUSE_IMPLICIT="kernel_linux elibc_glibc elibc_musl prefix prefix-guest"
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USE="kernel_linux elibc_musl python_targets_python3_11"
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EOF
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# Install extra dependencies
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FETCHCOMMAND="curl -o \"\${DISTDIR}/\${FILE}\" -L \"\${URI}\""
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FETCHCOMMAND="$FETCHCOMMAND" MAKEOPTS=-j1 emerge -O1 dev-build/make
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FETCHCOMMAND="$FETCHCOMMAND" emerge -O1 app-arch/lzip
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FETCHCOMMAND="$FETCHCOMMAND" emerge -O1 net-misc/wget
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# Fix "find" warnings in emerge
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emerge -O1 sys-apps/findutils
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# Set up python for dev-build/meson-format-array
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py=python3.11
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mkdir -p /usr/lib/python-exec/$py
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ln -sv python3 /usr/lib/python-exec/$py/python
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ln -svr /usr/bin/$py /usr/lib/python-exec/$py/python3
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emerge -O1 dev-lang/python-exec
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# Allow stripping binaries by installing "scanelf"
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emerge -O1 dev-build/meson-format-array
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emerge -O1 app-misc/pax-utils
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# Install tooling around autoconf/automake for sys-devel/binutils and sys-devel/gcc
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emerge -O1 sys-devel/gnuconfig sys-apps/gentoo-functions app-portage/elt-patches sys-devel/binutils-config sys-devel/gcc-config
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# Install rsync for sys-kernel/linux-headers
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emerge -O1 dev-build/autoconf dev-build/autoconf-wrapper
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emerge -O1 dev-build/automake dev-build/automake-wrapper
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emerge -O1 net-misc/rsync
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# Set up cross compiler
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mkdir -p /cross/etc/portage
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ln -sf /etc/portage/make.profile /cross/etc/portage/make.profile
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cat > /cross/etc/portage/make.conf << 'EOF'
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USE="prefix multilib"
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CTARGET="x86_64-bootstrap-linux-gnu"
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LIBDIR_x86="lib"
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LIBDIR_amd64="lib64"
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DEFAULT_ABI="amd64"
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MULTILIB_ABIS="amd64 x86"
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EOF
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mkdir -p /cross/etc/portage/env/sys-devel
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cat > /cross/etc/portage/env/sys-devel/gcc << 'EOF'
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EXTRA_ECONF='--with-sysroot=$EPREFIX/usr/$CTARGET'
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EOF
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cat > /cross/etc/portage/package.use << 'EOF'
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sys-devel/gcc -sanitize
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EOF
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#EXTRA_EMAKE='MAKE=make MAKE+=libsuffix=../lib64'
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# Set path for emerge builds
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cat > /etc/env.d/50baselayout << 'EOF'
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PATH=/cross/usr/bin:/usr/bin
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ROOTPATH=/cross/usr/bin:/usr/bin
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EOF
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env-update
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# TODO: Build sys-libs/glibc in /gentoo instead, to avoid extra rebuilding
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross emerge -O1 sys-devel/binutils
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross USE='headers-only' emerge -O1 sys-kernel/linux-headers
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross USE='headers-only -multilib' emerge -O1 sys-libs/glibc
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross USE='-cxx -fortran' emerge -O1 sys-devel/gcc
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross emerge -O1 sys-kernel/linux-headers
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross emerge -O1 sys-libs/glibc
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PORTAGE_CONFIGROOT=/cross EPREFIX=/cross emerge -O1 sys-devel/gcc
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# Get extra BDEPENDs for the final system
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emerge -O1 dev-util/pkgconf # dev-lang/python requires --keep-system-libs
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emerge -O1 dev-libs/mpdecimal # dev-lang/python (host)
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emerge -O1 dev-libs/expat # dev-lang/python (host)
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# TODO: verify bzip2 dep
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mv /bin/bzip2 /bin/bzip2-reference
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ln -s bzip2-reference /bin/bzip2
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emerge -O1 app-arch/bzip2 # dev-lang/python (build)
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# TODO: move python build so we don't need python-exec hack
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# ... or switch to only using python3.11
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USE='-*' emerge -O1 dev-lang/python # cross compiling python programs needs same version
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emerge -O1 dev-lang/python-exec-conf
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USE='python_targets_python3_12' emerge -O1 dev-lang/python-exec
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# Allow meson to still be ran despite python upgrade
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/gpep517
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emerge -O1 app-arch/unzip
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/installer
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/flit-core
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/packaging
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/more-itertools
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/ordered-set
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/jaraco-text
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/jaraco-functools
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/jaraco-context
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/wheel
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-python/setuptools
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 dev-build/meson
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PYTHON_COMPAT_OVERRIDE=python3_12 emerge -O1 sys-apps/portage
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# Reconfigure cross toolchain for final system
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cat > /cross/usr/lib/gcc/x86_64-bootstrap-linux-gnu/specs << 'EOF'
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*link:
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+ %{!shared:%{!static:%{!static-pie:-dynamic-linker %{m32:/lib/ld-linux.so.2;:/lib64/ld-linux-x86-64.so.2}}}}
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EOF
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for tool in gcc g++; do
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rm -f /cross/usr/bin/x86_64-bootstrap-linux-gnu-$tool
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cat > /cross/usr/bin/x86_64-bootstrap-linux-gnu-$tool << EOF
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#!/bin/sh
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exec /cross/usr/i386-unknown-linux-musl/x86_64-bootstrap-linux-gnu/gcc-bin/*/x86_64-bootstrap-linux-gnu-$tool --sysroot=/gentoo "\$@"
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EOF
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chmod +x /cross/usr/bin/x86_64-bootstrap-linux-gnu-$tool
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done
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# TODO: Do I need this?
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cat > /cross/usr/bin/x86_64-bootstrap-linux-gnu-pkg-config << 'EOF'
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#!/bin/sh
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export PKG_CONFIG_SYSROOT_DIR=/gentoo
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export PKG_CONFIG_LIBDIR=/gentoo/usr/lib64/pkgconfig
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export PKG_CONFIG_PATH=/gentoo/usr/share/pkgconfig
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export PKG_CONFIG_SYSTEM_INCLUDE_PATH=/gentoo/usr/include
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export PKG_CONFIG_SYSTEM_LIBRARY_PATH=/gentoo/lib64:/gentoo/usr/lib64
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exec pkg-config "$@"
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EOF
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chmod +x /cross/usr/bin/x86_64-bootstrap-linux-gnu-pkg-config
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# Compile final system (hopefully)
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# TODO: Try to get rid of CFLAGS_x86 override
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mkdir -p /gentoo/etc/portage
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ln -sf /var/db/repos/gentoo/profiles/default/linux/amd64/23.0 /gentoo/etc/portage/make.profile
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cat > /gentoo/etc/portage/make.conf << 'EOF'
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FEATURES="-news -sandbox -usersandbox -pid-sandbox -parallel-fetch"
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BINPKG_COMPRESS="bzip2"
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CBUILD="i386-unknown-linux-musl"
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CHOST="x86_64-bootstrap-linux-gnu"
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CFLAGS_x86=-m32
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USE="-* build python_targets_$PYTHON_SINGLE_TARGET"
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CONFIG_SITE="$PORTAGE_CONFIGROOT/etc/portage/config.site"
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EOF
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cat > /gentoo/etc/portage/config.site << 'EOF'
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if [ "${CBUILD:-${CHOST}}" != "${CHOST}" ]; then
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# Settings grabbed from crossdev
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ac_cv_file__dev_ptmx=yes
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ac_cv_file__dev_ptc=no
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fi
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EOF
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# TODO: Build gcc with openmp (required by zstd)
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PORTAGE_CONFIGROOT=/gentoo ROOT=/gentoo SYSROOT=/gentoo emerge -O1n \
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sys-apps/baselayout \
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sys-kernel/linux-headers \
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sys-libs/glibc \
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sys-devel/binutils \
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dev-libs/gmp \
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dev-libs/mpfr \
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dev-libs/mpc \
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sys-devel/gcc \
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\
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app-arch/bzip2 \
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app-arch/xz-utils \
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dev-libs/expat \
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dev-libs/libffi \
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dev-libs/mpdecimal \
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sys-apps/util-linux \
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sys-libs/libxcrypt \
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sys-libs/zlib \
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dev-lang/python:3.12 \
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\
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dev-lang/python-exec \
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sys-apps/portage \
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\
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sys-libs/ncurses \
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sys-libs/readline \
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app-shells/bash \
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\
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sys-apps/coreutils \
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sys-apps/findutils \
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app-arch/tar \
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app-arch/gzip \
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sys-apps/sed \
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sys-apps/grep \
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sys-devel/patch \
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sys-apps/gawk \
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dev-build/make
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# TODO: Un-hardcode python 3.12
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# TODO: Avoid gzip, sed and grep?
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# Fetch some extra source code
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DISTDIR=/gentoo/var/cache/distfiles \
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PORTAGE_CONFIGROOT=/gentoo ROOT=/gentoo SYSROOT=/gentoo emerge -O1f \
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app-misc/ca-certificates \
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dev-lang/perl \
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dev-libs/openssl \
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dev-util/pkgconf \
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net-misc/wget
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# From here you just chroot into /gentoo, clean /etc/portage (leaving only make.profile), install wget, and run "emerge -DN @world", untangling dependencies until it works
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# TODO: Draw the rest of the fucking owl
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