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This commit is contained in:
Dawid Sobczak 2025-04-18 12:41:04 +01:00
parent 9a4b261179
commit 404aa8ebbb
139 changed files with 8091 additions and 1178 deletions
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52
06/using-nix/2b2-busybox.nix Normal file
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{ fetchurl, mkDerivationStage2
, stage1, static-gnumake, musl, clang, linux-headers }:
let
source-tarball-busybox = fetchurl {
# local = /downloads/busybox-1.36.1.tar.bz2;
url = "https://busybox.net/downloads/busybox-1.36.1.tar.bz2";
sha256 = "b8cc24c9574d809e7279c3be349795c5d5ceb6fdf19ca709f80cde50e47de314";
};
in
mkDerivationStage2 {
name = "bootstrap-2b2-busybox";
buildInputPaths = [
"${stage1.protobusybox}/bin"
"${static-gnumake}/bin"
"${clang}/bin"
];
script = ''
mkdir build-dir; cd build-dir
# alias ash to sh:
mkdir aliases; ln -s ${stage1.protobusybox}/bin/ash aliases/sh
export PATH="$(pwd)/aliases:$PATH"
# unpack:
unpack ${source-tarball-busybox}
# fixup:
echo -e '#!${stage1.protobusybox}/bin/ash\nprintf 9999' \
> scripts/gcc-version.sh
sed -i 's|/bin/sh|${stage1.protobusybox}/bin/ash|g' \
scripts/gen_build_files.sh \
scripts/mkconfigs scripts/embedded_scripts scripts/trylink \
scripts/generate_BUFSIZ.sh \
applets/usage_compressed applets/busybox.mkscripts applets/install.sh
# configure:
echo "### $0: configuring busybox..."
BUSYBOX_FLAGS='CONFIG_SHELL=${stage1.protobusybox}/bin/ash'
BUSYBOX_FLAGS="$BUSYBOX_FLAGS CC=cc HOSTCC=cc"
BUSYBOX_FLAGS="$BUSYBOX_FLAGS KCONFIG_NOTIMESTAMP=y"
BUSYBOX_CFLAGS="CFLAGS=-I${linux-headers}/include"
make -j $NPROC $BUSYBOX_FLAGS "$BUSYBOX_CFLAGS" defconfig
sed -i 's|CONFIG_INSTALL_NO_USR=y|CONFIG_INSTALL_NO_USR=n|' .config
# build:
make -j $NPROC $BUSYBOX_FLAGS "$BUSYBOX_CFLAGS" busybox busybox.links
sed -i 's|^/usr/s\?bin/|/bin/|' busybox.links
# install:
make -j $NPROC $BUSYBOX_FLAGS "$BUSYBOX_CFLAGS" \
install CONFIG_PREFIX=$out
# check for build path leaks:
( ! grep -rF $(pwd) $out )
'';
extra.allowedRequisites = [ "out" musl clang ];
extra.allowedReferences = [ "out" musl clang ];
}