Folks,

As I've been building (or rather, trying to build) a lot of kernels
lately, I've created a kernel build script to help automate the process.

I've tested it on VAX and i386 NetBSD machines, the VAX running 1.1B and
the i386 running 1.2.

I thought I might post it here in case others would like to use it.

I call the script "doconfig". Don't forget to chmod it to 755...

Here it is:

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#!/bin/sh

#
# Version 0.9, 24-Nov-96.
#
# Simple shell-script to more-or-less automate the kernel building
# process. The script can't help you with bugs in the source though...
;-)
# Created by Gunnar Helliesen, Bergen IT Consult AS, <gunnar@bitcon.no>
# Distribute freely, but give me credit, OK?
#
# The script assumes that you have already downloaded and unpacked the 
# kernel source in /usr/src/sys.
#
# Usage: doconfig <config-name> {init|rebuild|resume}
#  <config-name> is the name of the kernel configuration
#  Use init if this is the first time you build this version
#  Use rebuild if you want to rebuild this version from scratch
#  Use resume if you want to resume an interrupted build
#
# Note: if you're doing a major upgrade, like building a 1.2 kernel on 
# a 1.1 system, you should download and install the include source as 
# well (in /usr/src/include).
#

# Set up variables.

ARCH=`uname -m`
INSTALL=`which install`; export INSTALL

# Test input parameters.

if [ $# -lt 2 ] ; then
 echo "*** Usage: $0 <config-name> {init|rebuild|resume}"
 echo "*** where:"
 echo "***  <config-name> is the name of the kernel configuration file"
 echo "***    (usually GENERIC)."
 echo "***  init means start from scratch (deleting any previous build"
 echo "***    directory if it exists). This option will install the
include"
 echo "***    files found in the kernel source tree. Use this option if
you"
 echo "***    have not built this version on this system before."
 echo "***  rebuild means rebuild this version from a clean build
directory."
 echo "***    Use this option if you have built this version on this
system"
 echo "***    before but have since changed the configuration file.
This"
 echo "***    option will delete any previous build directory if it
exists."
 echo "***  resume means resume a previous build that was interrupted"
 echo "***    (this option does not delete anything)"
 echo "***"
 echo "*** If you don't understand any of this and just want to get on
with"
 echo "*** it, type: $0 GENERIC init"
 exit 1
fi

# OK, at least we got the correct number of parameters. Now, let's check
if 
# they make any sense.

case "$2" in

'init')
 INCLUDES=YES
 DELETE=YES
 CONFIG=YES
 ;;
'rebuild')
 INCLUDES=NO
 DELETE=YES
 CONFIG=YES
 ;;
'resume')
 INCLUDES=NO
 DELETE=NO
 CONFIG=NO
 ;;
*)
 echo "*** Sorry, illegal parameters. Enter $0"
 echo "*** for usage information."
 exit 1
 ;;

esac

if [ -f /sys/arch/$ARCH/conf/$1 ] ; then
 echo "*** Config file found, proceeding..."
else
 echo "*** Configuration file $1 doesn't exist!"
 echo "*** Exiting..."
 exit 1
fi

# Everything seems in order. Say hello to the user.

echo "***"
echo "*** Welcome to the kernel build procedure. This may take a while,"
echo "*** why not go grab a cuppacoffee? Or come back next week if
you're"
echo "*** building on a MicroVAX II... ;-)"
echo "***"

# Make includes if so instructed.

if [ $INCLUDES = "YES" ] ; then
 echo "*** Making includes (cd /sys; make includes)"
 cd /sys; make includes
 if [ $? -eq 0 ] ; then
  echo "*** Done."
 else
  echo "*** Couldn't make includes. Correct the problem and restart."
  echo "*** Exiting..."
  exit 1
 fi
fi

# Delete old build directory if needed.

if [ $DELETE = "YES" ] ; then
 if [ -d /sys/arch/$ARCH/compile/$1 ] ; then
  echo "*** Removing old build directory (cd /sys/arch/$ARCH/compile; rm
-rf $1)
"
  cd /sys/arch/$ARCH/compile; rm -rf $1
  if [ $? -eq 0 ] ; then
   echo "*** Done."
  else
   echo "*** Unable to remove old build directory!"
   echo "*** Exiting..."
   exit 1
  fi
 else
  echo "*** No previous build directory to delete. Proceeding..."
 fi
fi

# Update the kernel configuration.

if [ $CONFIG = "YES" ] ; then
 echo "*** Updating configuration (cd /sys/arch/$ARCH/conf; config $1)"
 cd /sys/arch/$ARCH/conf; config $1
 if [ $? -eq 0 ] ; then
  echo "*** Done."
 else
  echo "*** Unable to configure the new kernel!"
  echo "*** Exiting..."
  exit 1
 fi
fi

# OK, here we go. Start the kernel build.

if [ -d /sys/arch/$ARCH/compile/$1 ] ; then
 if [ $ARCH != "vax" ] ; then
  echo "*** Running make depend (cd /sys/arch/$ARCH/compile/$1; make
depend 2>&1
 > ../$1.depend.log)"
  cd /sys/arch/$ARCH/compile/$1; make depend 2>&1 > ../$1.depend.log
  if [ $? -eq 0 ] ; then
   echo "*** Done."
  else
   echo "*** Unable to run make depend!"
   echo "*** Examine the log file for details, the log file was:"
   echo "*** /sys/arch/$ARCH/compile/$1.depend.log"
   echo "*** Exiting..."
   exit 1
  fi
 fi
 echo "*** Starting the kernel build, this may take a while."
 echo "*** (cd /sys/arch/$ARCH/compile/$1; make 2>&1 > ../$1.build.log)"
 echo "*** You might want to background this process and rather keep"
 echo "*** an eye on the logfile with the tail command like this:"
 echo "*** tail -f /sys/arch/$ARCH/compile/$1.build.log"
 echo "*** To background the build, press ^Z (CNTRL/Z) now and enter"
 echo "*** bg at the prompt."
 cd /sys/arch/$ARCH/compile/$1; make 2>&1 > ../$1.build.log
 if [ $? -eq 0 ] ; then
  echo "*** Done."
  if [ -f /sys/arch/$ARCH/compile/$1/netbsd ] ; then
   echo "*** New kernel is /sys/arch/$ARCH/compile/$1/netbsd"
  else
   echo "*** Couldn't find the new kernel image! Something must have"
   echo "*** gone wrong..."
   echo "*** Examine the log file for details, the log file was:"
   echo "*** /sys/arch/$ARCH/compile/$1.build.log"
   echo "*** Exiting..."
   exit 1
  fi
 else
  echo "*** Something went belly-up, the kernel build crashed."
  echo "*** Examine the log file for details, the log file was:"
  echo "*** /sys/arch/$ARCH/compile/$1.build.log"
  echo "*** Exiting..."
  exit 1
 fi
else
 echo "*** ??? Couldn't find build directory!"
 if [ $CONFIG = "NO" ] ; then
  echo "*** Maybe you should try the init or rebuild option instead."
 fi
 echo "*** Exiting..."
 exit 1
fi

# We outta here. Say goodbye.

echo "*** All done, exiting..."
exit 0

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Let me know if you like it and use (or improve it).

Gunnar

--
Gunnar Helliesen   | Bergen IT Consult AS  | NetBSD/VAX on a uVAX II
Systems Consultant | Bergen, Norway        | '86 Jaguar Sovereign 4.2
gunnar@bitcon.no   | http://www.bitcon.no/ | '73 Mercedes 280 (240D)