| #!/bin/sh |
| # |
| # sh configinit.sh config-spec-file [ build output dir ] |
| # |
| # Create a .config file from the spec file. Run from the kernel source tree. |
| # Exits with 0 if all went well, with 1 if all went well but the config |
| # did not match, and some other number for other failures. |
| # |
| # The first argument is the .config specification file, which contains |
| # desired settings, for example, "CONFIG_NO_HZ=y". For best results, |
| # this should be a full pathname. |
| # |
| # The second argument is a optional path to a build output directory, |
| # for example, "O=/tmp/foo". If this argument is omitted, the .config |
| # file will be generated directly in the current directory. |
| |
| T=/tmp/configinit.sh.$$ |
| trap 'rm -rf $T' 0 |
| mkdir $T |
| |
| # Capture config spec file. |
| |
| c=$1 |
| buildloc=$2 |
| builddir= |
| if test -n $buildloc |
| then |
| if echo $buildloc | grep -q '^O=' |
| then |
| builddir=`echo $buildloc | sed -e 's/^O=//'` |
| if test ! -d $builddir |
| then |
| mkdir $builddir |
| fi |
| else |
| echo Bad build directory: \"$builddir\" |
| exit 2 |
| fi |
| fi |
| |
| sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh |
| sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh |
| grep '^grep' < $T/u.sh > $T/upd.sh |
| echo "cat - $c" >> $T/upd.sh |
| make mrproper |
| make $buildloc distclean > $builddir/Make.distclean 2>&1 |
| make $buildloc defconfig > $builddir/Make.defconfig.out 2>&1 |
| mv $builddir/.config $builddir/.config.sav |
| sh $T/upd.sh < $builddir/.config.sav > $builddir/.config |
| cp $builddir/.config $builddir/.config.new |
| yes '' | make $buildloc oldconfig > $builddir/Make.modconfig.out 2>&1 |
| |
| # verify new config matches specification. |
| configcheck.sh $builddir/.config $c |
| |
| exit 0 |
