nixpkgs/pkgs/os-specific/linux/minimal-bootstrap/mes/gen-sources.sh

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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash coreutils gnutar
# Generate a sources.nix for a version of GNU mes. Creates lists of source files
# from build-aux/configure-lib.sh.
#
# You may point this tool at a manually downloaded tarball, but more ideal is
# using the source tarball from Nixpkgs. For example:
#
# MES_TARBALL="$(nix-build --no-link -A minimal-bootstrap.mes.src ../../../../..)"
# ./gen-sources.sh "$MES_TARBALL" > ./new-sources.nix
set -eu
# Supported platforms
ARCHS="x86"
KERNELS="linux"
COMPILERS="mescc gcc"
format() {
echo "["
echo $* | xargs printf ' "%s"\n'
echo " ]"
}
gen_sources() {
# Configuration variables used by configure-lib.sh
export mes_libc=mes
export mes_cpu=$1
export mes_kernel=$2
export compiler=$3
# Populate source file lists
source $CONFIGURE_LIB_SH
cat <<EOF
$mes_cpu.$mes_kernel.$compiler = {
libc_mini_SOURCES = $(format $libc_mini_SOURCES);
libmescc_SOURCES = $(format $libmescc_SOURCES);
libtcc1_SOURCES = $(format $libtcc1_SOURCES);
libc_SOURCES = $(format $libc_SOURCES);
libc_tcc_SOURCES = $(format $libc_tcc_SOURCES);
libc_gnu_SOURCES = $(format $libc_gnu_SOURCES);
mes_SOURCES = $(format $mes_SOURCES);
};
EOF
}
MES_TARBALL=$1
if [ ! -f $MES_TARBALL ]; then
echo "Provide path to mes-x.x.x.tar.gz as first argument" >&2
exit 1
fi
echo "Generating sources.nix from $MES_TARBALL" >&2
TMP=$(mktemp -d)
cd $TMP
echo "Workdir: $TMP" >&2
echo "Extracting $MES_TARBALL" >&2
tar --strip-components 1 -xf $MES_TARBALL
CONFIGURE_LIB_SH="$TMP/build-aux/configure-lib.sh"
if [ ! -f $CONFIGURE_LIB_SH ]; then
echo "Could not find mes's configure-lib.sh script at $CONFIGURE_LIB_SH" >&2
exit 1
fi
# Create dummy config expected by configure-lib.sh
touch config.sh
chmod +x config.sh
echo "Configuring with $CONFIGURE_LIB_SH" >&2
cat <<EOF
# This file is generated by ./gen-sources.sh.
# Do not edit!
{
EOF
for arch in $ARCHS; do
for kernel in $KERNELS; do
for compiler in $COMPILERS; do
gen_sources $arch $kernel $compiler
done
done
done
cat <<EOF
}
EOF