diff options
Diffstat (limited to 'scripts/mkroot.sh')
| -rwxr-xr-x | scripts/mkroot.sh | 76 |
1 files changed, 45 insertions, 31 deletions
diff --git a/scripts/mkroot.sh b/scripts/mkroot.sh index faf387db..a7338dbe 100755 --- a/scripts/mkroot.sh +++ b/scripts/mkroot.sh @@ -1,12 +1,12 @@ #!/bin/bash # Clear environment variables by restarting script w/bare minimum passed through -[ -z "$NOCLEAR" ] && - exec env -i NOCLEAR=1 HOME="$HOME" PATH="$PATH" LINUX="$LINUX" CROSS="$CROSS"\ - CROSS_COMPILE="$CROSS_COMPILE" CROSS_SHORT="$CROSS_SHORT" "$0" "$@" +# set ALL= LINUX= CROSS= on command line +[ -z "$NOCLEAR" ] && exec env -i NOCLEAR=1 HOME="$HOME" PATH="$PATH" \ + CROSS_COMPILE="$CROSS_COMPILE" "$0" "$@" die() { echo "$@" >&2; exit 1; } -announce() { echo -e "\033]2;$CROSS_SHORT $*\007\n=== $*"; } +announce() { echo -e "\033]2;$CROSS $*\007\n=== $*"; } getcross() { X="$(echo "$CCC/$1"-*cross/bin/"$1"*-cc)"; echo "${X%cc}"; } # assign command line NAME=VALUE args to env vars @@ -16,41 +16,46 @@ while [ $# -ne 0 ]; do shift done +# set up directories (can override most of these paths on cmdline) +TOP="$PWD/root" +: ${BUILD:=$TOP/build} ${AIRLOCK:=$TOP/airlock} +mkdir -p ${LOG:=$TOP/log} || exit 1 + +# set CROSS_COMPILE from $CROSS using ccc. Handle "all" w/log, list, and err chk if [ ! -z "$CROSS" ]; then [ ! -d "${CCC:=$PWD/ccc}" ] && die "No ccc symlink to compiler directory." - CCCLIST="$(ls "$CCC" | sed -n 's/-.*//p' | sort -u | xargs)" if [ "$CROSS" == all ]; then - for i in $CCCLIST; do CROSS_COMPILE="$(getcross $i)" exec "$0" "$@"; done + for i in $(ls "$CCC" | sed -n 's/-.*//p' | sort -u | xargs); do + { rm -f "$LOG/$i-log".{failed,success} + "$0" "$@" CROSS=$i ; [ $((X=$?)) -eq 0 ] && mv "$LOG/$i".{txt,success} + } |& tee "$LOG/$i.txt" + [ ! -e "$LOG/$i.success" ] && + { mv "$LOG/$i".{txt,failed};[ -z "$ALL" ] && exit 1; } + done; exit elif [ ! -e "${CROSS_COMPILE:=$(getcross $CROSS)}cc" ]; then - ls "$CCC" | sed -n 's/-.*//p' | sort -u | xargs - exit 0 + ls "$CCC" | sed -n 's/-.*//p' | sort -u | xargs; exit fi fi -# If we're cross compiling, set appropriate environment variables. +# Digest $CROSS_COMPILE (if any) into appropriate environment variables. if [ -z "$CROSS_COMPILE" ]; then if ! cc --static -xc - -o /dev/null <<< "int main(void) {return 0;}"; then - echo "Warning: host compiler can't create static binaries." >&2 - sleep 3 + echo "Warning: host compiler can't create static binaries." >&2; sleep 3 fi else CROSS_PATH="$(dirname "$(which "${CROSS_COMPILE}cc")")" CROSS_BASE="$(basename "$CROSS_COMPILE")" - [ -z "$CROSS_SHORT" ] && CROSS_SHORT="${CROSS_BASE/-*/}" [ -z "$CROSS_PATH" ] && die "no ${CROSS_COMPILE}cc in path" + : ${CROSS:=${CROSS_BASE/-*/}} fi -echo "Building for ${CROSS_SHORT:=host}" +echo "Building for ${CROSS:=host}" -# set up directories (can override most of these paths on cmdline) -TOP="$PWD/root" -[ -z "$BUILD" ] && BUILD="$TOP/build" -[ -z "$AIRLOCK" ] && AIRLOCK="$TOP/airlock" -[ -z "$OUTPUT" ] && OUTPUT="$TOP/$CROSS_SHORT" +: ${OUTPUT:=$TOP/$CROSS} [ -z "$ROOT" ] && ROOT="$OUTPUT/${CROSS_BASE}fs" && rm -rf "$ROOT" MYBUILD="$BUILD/${CROSS_BASE:-host-}tmp" rm -rf "$MYBUILD" && mkdir -p "$MYBUILD" || exit 1 -# Stabilize cross compiling by providing known $PATH contents +# Provide known $PATH contents (airlock) for cross compile builds if [ ! -z "$CROSS_COMPILE" ]; then if [ ! -e "$AIRLOCK/toybox" ]; then announce "airlock" @@ -84,11 +89,15 @@ fi if [ $$ -eq 1 ]; then # Setup networking for QEMU (needs /proc) + ifconfig lo 127.0.0.1 ifconfig eth0 10.0.2.15 route add default gw 10.0.2.2 [ "$(date +%s)" -lt 1000 ] && rdate 10.0.2.2 # Ask QEMU what time it is [ "$(date +%s)" -lt 10000000 ] && ntpd -nq -p north-america.pool.ntp.org + # Run expansion scripts (if any) + for i in $(/etc/rc/* | sort); do [ -e "$i" ] && . $i; done + [ -z "$CONSOLE" ] && CONSOLE="$(</sys/class/tty/console/active)" [ -z "$HANDOFF" ] && HANDOFF=/bin/sh && echo Type exit when done. exec /sbin/oneit -c /dev/"${CONSOLE:-console}" $HANDOFF @@ -111,8 +120,8 @@ echo "nameserver 8.8.8.8" > "$ROOT"/etc/resolv.conf || exit 1 # Build toybox announce toybox -make clean -make $([ -z .config ] && echo defconfig || echo silentoldconfig) +make clean && +make $([ -z .config ] && echo defconfig || echo silentoldconfig) && LDFLAGS=--static PREFIX="$ROOT" make toybox install || exit 1 write_miniconfig() @@ -208,27 +217,32 @@ else announce "linux-$KARCH" pushd "$LINUX" && make distclean && popd && - cp -sfR "$LINUX" "$MYBUILD/linux" && pushd "$MYBUILD/linux" || exit 1 + cp -sfR "$LINUX" "$MYBUILD/linux" && pushd "$MYBUILD/linux" && write_miniconfig > "$OUTPUT/miniconfig-$TARGET" && - make ARCH=$KARCH allnoconfig KCONFIG_ALLCONFIG="$OUTPUT/miniconfig-$TARGET" && - make ARCH=$KARCH CROSS_COMPILE="$CROSS_COMPILE" -j $(nproc) || exit 1 + make ARCH=$KARCH allnoconfig KCONFIG_ALLCONFIG="$OUTPUT/miniconfig-$TARGET" || + exit 1 + + # Remove stupid kernel defaults that shouldn't be on by default + # See http://lkml.iu.edu/hypermail/linux/kernel/1912.3/03493.html + # And yes, CONFIG_EXPERT forces on CONFIG_DEBUG which adds gratuitous bloat. + sed -e 's/# CONFIG_EXPERT .*/CONFIG_EXPERT=y/' \ + -e "$(sed -E '/^$/d;s@([^,]*)($|,)@/^CONFIG_\1=y/d;$a# CONFIG_\1 is not set/\n@g' <<< VT,SCHED_DEBUG,DEBUG_MISC,X86_DEBUG_FPU)" -i .config && + yes "" | make ARCH=$KARCH oldconfig > /dev/null && + + make ARCH=$KARCH CROSS_COMPILE="$CROSS_COMPILE" -j $(nproc) && + cp .config "$OUTPUT/linux-fullconfig" || exit 1 # If we have a device tree binary, save it for QEMU. if [ ! -z "$DTB" ]; then cp "$DTB" "$OUTPUT/$(basename "$DTB")" || exit 1 fi - cp "$VMLINUX" "$OUTPUT/$(basename "$VMLINUX")" && cd .. && rm -rf linux && - popd || exit 1 + cp "$VMLINUX" "$OUTPUT" && cd .. && rm -rf linux && popd || exit 1 fi +# Build any modules, clean up, and package root filesystem for initramfs. for i in $PKG; do announce "$i"; ./$i; done - rmdir "$MYBUILD" "$BUILD" 2>/dev/null - -# package root filesystem for initramfs. -# we do it here so module install can add files (not implemented yet) announce "${CROSS_BASE}root.cpio.gz" - (cd "$ROOT" && find . | cpio -o -H newc | gzip) > \ "$OUTPUT/${CROSS_BASE}root.cpio.gz" |