zygo: build-kernel: lightweight build-and-deploy script inspired by Raspberry Pi...

(cherry picked from commit b43dc869686c996118ee7a879698013648f5dc22)

diff --git a/zygo/build-kernel b/zygo/build-kernel
new file mode 100755 (executable)
index 0000000..a347157
--- /dev/null
+++ b/zygo/build-kernel
@@ -0,0 +1,44 @@
+#!/bin/bash
+# ...because not sure if dash does ${foo/re/rep}
+set -x
+
+move-to-cgroup kbuild $$
+
+deployTarget="$1"
+shift
+
+set -a
+# PATH="$PATH:$(realpath ../tools)/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin"
+# No ccache
+PATH="/usr/bin:/bin"
+
+# KERNEL="${KERNEL-kernel}"
+
+rm -fr ../root/lib/modules
+
+mkdir -vp \
+       ../root/boot \
+       ../root/lib/modules \
+
+# make -j4 zImage modules dtbs
+# sudo make modules_install
+# sudo cp arch/arm/boot/dts/*.dtb /boot/
+# sudo cp arch/arm/boot/dts/overlays/*.dtb* /boot/overlays/
+# sudo cp arch/arm/boot/dts/overlays/README /boot/overlays/
+# sudo cp arch/arm/boot/zImage /boot/$KERNEL.img
+
+# mEnv="ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-"
+
+cpuCount="$(grep -c '^processor' /proc/cpuinfo || echo 1)"
+
+EXTRAVERSION="-$(git rev-parse --short HEAD)"
+
+make -j$((cpuCount*2)) "$@" EXTRAVERSION="$EXTRAVERSION" bzImage modules || exit $?
+make -j$((cpuCount*2)) "$@" EXTRAVERSION="$EXTRAVERSION" INSTALL_MOD_PATH="$(realpath ../root)" modules_install || exit $?
+
+rsync -avxHSPW arch/x86/boot/bzImage ../root/boot/vmlinuz
+# rsync -avxHSPW arch/arm/boot/dts/*.dtb ../root/boot/
+# rsync -avxHSPW arch/arm/boot/dts/overlays/*.dtb* ../root/boot/overlays/
+# rsync -avxHSPW arch/arm/boot/dts/overlays/README ../root/boot/overlays/
+
+[ -n "$deployTarget" ] && rsync -avxzHSP ../root/. "$deployTarget"