75 lines
1.5 KiB
Bash
75 lines
1.5 KiB
Bash
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#!/bin/bash
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#
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# Script for building the Linux kernel from git. It aims to build a kernel image
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# that is suitable for running in a virtual machine and is aimed to used for
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# testing.
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#
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# Usage: build-linux.sh [REPO-URL] [BRANCH|TAG] [OUTPUT-FILE] [...CONFIGS]
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#
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# Where [..CONFIGS] can be any number of configuration options, e.g.
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# --enable CONFIG_DRM_VKMS
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set -e
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# From scripts/subarch.include in linux
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function get-subarch()
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{
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uname -m | sed -e s/i.86/x86/ \
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-e s/x86_64/x86/ \
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-e s/sun4u/sparc64/ \
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-e s/arm.*/arm/ -e s/sa110/arm/ \
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-e s/s390x/s390/ -e s/parisc64/parisc/ \
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-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
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-e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \
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-e s/riscv.*/riscv/
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}
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REPO="$1"
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BRANCH_OR_TAG="$(cat $2)"
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IMAGE="$3"
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ARCH=$(uname -m)
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SUBARCH=$(get-subarch)
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shift
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shift
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shift
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# ./scripts/config --enable CONFIG_DRM_VKMS
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CONFIGS=()
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while [[ "x$1" != "x" ]]; do
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CONFIGS+=( "$1" )
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shift
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done
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echo Building Linux for $ARCH \($SUBARCH\)...
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set -x
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if [ -d linux ]; then
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pushd linux
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git fetch $REPO $BRANCH_OR_TAG
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git checkout FETCH_HEAD
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else
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git clone --depth=1 --branch=$BRANCH_OR_TAG $REPO linux
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pushd linux
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fi
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make defconfig
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sync
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make kvm_guest.config
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echo Enabling ${CONFIGS[@]}...
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./scripts/config ${CONFIGS[@]/#/--enable }
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make oldconfig
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make -j8
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popd
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TARGET_DIR="$(dirname "$IMAGE")"
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mkdir -p "$TARGET_DIR"
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mv linux/arch/$SUBARCH/boot/bzImage "$IMAGE"
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mv linux/.config $TARGET_DIR/.config
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#rm -rf linux
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