Mercurial > hg > aboriginal
view host-tools.sh @ 635:c796d3ebf179
Fluff out docs a bit (miniconfig: what hardware does qemu need?)
author | Rob Landley <rob@landley.net> |
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date | Wed, 18 Mar 2009 15:32:24 -0500 |
parents | 065e1a0f6697 |
children | c92dc77da038 |
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#!/bin/bash # Get lots of predefined environment variables and shell functions. # Tell bash not to cache the $PATH to anything, so busybox/toybox utilities # get used immediately even if a different executable was found last lookup. set +h NO_ARCH=1 source sources/include.sh echo -e "$HOST_COLOR" echo "=== Building host tools" export LC_ALL=C mkdir -p "${HOSTTOOLS}" || dienow # If we want to record the host command lines, so we know exactly what commands # the build uses. if [ ! -z "$RECORD_COMMANDS" ] then if [ ! -f "$BUILD/wrapdir/wrappy" ] then echo setup wrapdir # Build the wrapper and install it into build/wrapdir/wrappy rm -rf "$BUILD/wrapdir" mkdir "$BUILD/wrapdir" && $CC -Os "$SOURCES/toys/wrappy.c" -o "$BUILD/wrapdir/wrappy" || dienow # Loop through each $PATH element and create a symlink to the wrapper with # that name. for i in $(echo $PATH | sed 's/:/ /g') do for j in $(ls $i) do [ -f "$BUILD/wrapdir/$j" ] || ln -s wrappy "$BUILD/wrapdir/$j" done done # Adjust things to use wrapper directory export WRAPPY_REALPATH="$PATH" PATH="$BUILD/wrapdir" fi # If we're not recording the host command lines, then populate a directory # with host versions of all the command line utilities we're going to install # into mini-native. When we're done, PATH can be set to include just this # directory and nothing else. # This serves three purposes: # # 1) Enumerate exactly what we need to build the system, so we can make sure # mini-native has everything it needs to rebuild us. If anything is missing # from this list, the resulting mini-native probably won't have it either, # so it's nice to know as early as possible that we actually needed it. # # 2) Quick smoke test that the versions of the tools we're using can compile # everything from source correctly, and thus mini-native should be able to # rebuild from source using those same tools. # # 3) Reduce variation from distro to distro. The build always uses the # same command line utilities no matter where we're running, because we # provide our own. else # Start by creating symlinks to the host toolchain, since we need to use # that to build anything else. We build a cross compiler, and a native # compiler for the target, but we don't build a host toolchain. We use the # one that's already there. for i in ar as nm cc gcc make ld do [ ! -f "${HOSTTOOLS}/$i" ] && (ln -s `PATH="$OLDPATH" which $i` "${HOSTTOOLS}/$i" || dienow) done # Build toybox if [ ! -f "${HOSTTOOLS}/toybox" ] then setupfor toybox && make defconfig && make || dienow if [ -z "$USE_TOYBOX" ] then mv toybox "$HOSTTOOLS" && ln -s toybox "$HOSTTOOLS"/patch && ln -s toybox "$HOSTTOOLS"/netcat || dienow else make install_flat PREFIX="${HOSTTOOLS}" || dienow fi cd .. cleanup toybox fi # Build busybox if [ ! -f "${HOSTTOOLS}/busybox" ] then setupfor busybox && make allyesconfig KCONFIG_ALLCONFIG="${SOURCES}/trimconfig-busybox" && make -j $CPUS && make busybox.links && cp busybox "${HOSTTOOLS}" [ $? -ne 0 ] && dienow for i in $(sed 's@.*/@@' busybox.links) do [ ! -f "${HOSTTOOLS}/$i" ] && (ln -s busybox "${HOSTTOOLS}/$i" || dienow) done cd .. cleanup busybox fi PATH="${HOSTTOOLS}" fi # This is optionally used by mini-native to accelerate native builds when # running under qemu. It's not used to build mini-native, or to build # the cross compiler, but it needs to be on the host system in order to # use the distcc acceleration trick. # Note that this one we can use off of the host, it's used on the host where # the system image runs. The build doesn't actually use it, we only bother # to build it at all here as a convenience for run-from-build.sh. # Build distcc (if it's not in $PATH) if [ -z "$(which distccd)" ] then echo build distcc setupfor distcc && ./configure --with-included-popt --disable-Werror && make -j "$CPUS" && cp distcc distccd "${HOSTTOOLS}" && cd .. cleanup distcc fi # Build genext2fs. We use it to build the ext2 image to boot qemu with # in system-image.sh. if [ ! -f "${HOSTTOOLS}"/genext2fs ] then setupfor genext2fs && ./configure && make -j $CPUS && cp genext2fs "${HOSTTOOLS}" && cd .. cleanup genext2fs fi # Squashfs is an alternate packaging option. #if [ ! -f "${HOSTTOOLS}"/mksquashfs ] #then # setupfor squashfs && # cd squashfs-tools && # make && # cp mksquashfs unsquashfs "${HOSTTOOLS}" && # cd .. # # cleanup squashfs #fi if [ ! -z "$RECORD_COMMANDS" ] then # Make sure the host tools we just built are also in wrapdir for j in $(ls "$HOSTTOOLS") do [ -e "$BUILD/wrapdir/$j" ] || ln -s wrappy "$BUILD/wrapdir/$j" done fi echo -e "\e[32mHost tools build complete.\e[0m"