This tree will build one binary crash extension, install several shell
script assistive scripts and several sial extensions.  Typing:
  make install
will do it all.  After that, when you run crash, it will fire off a
script that will figure out what modules need loading and what extensions
are available for load.  At the end of the crash initialization, you will
see something like this:

    The modules-to-load commands are configured:
      ! :> c-cmd.out
      sys | sed '/^crash>/d'";s/'//g" > c-cmd.sys
      mod | awk '/not loaded/{print $2}' > c-cmd.out
      ! echo $(wc -l < c-cmd.out) modules need loading
      ! bash /root/bin/mk-init-crash find_mods
    please type '< c-cmd' to invoke them

Sourcing the "c-cmd" file will pack all the derived information into a file
named "init.crash" and it will put the absurdly long invocation into a
script named "run-crash".  You can then edit "init.crash" to make any manual
adjustments before sourcing it by crash.  The "run-crash" script will
automatically source the file.  The results will look something like this:

    # head -500 init.crash run-crash
    ==> init.crash <==
    mod -s   libcfs lustre_kos/libcfs.ko
    mod -s     lvfs lustre_kos/lvfs.ko
    mod -s     lnet lustre_kos/lnet.ko
    mod -s  kgnilnd lustre_kos/kgnilnd.ko
    mod -s obdclass lustre_kos/obdclass.ko
    mod -s   ptlrpc lustre_kos/ptlrpc.ko
    mod -s      osc lustre_kos/osc.ko
    mod -s   lquota lustre_kos/lquota.ko
    mod -s      mdc lustre_kos/mdc.ko
    mod -s      lov lustre_kos/lov.ko
    mod -s   lustre lustre_kos/lustre.ko
    mod -s      mgc lustre_kos/mgc.ko
    extend /root/.crash.d/lustre-ext.so
    extend /usr/lib64/crash/extensions/dminfo.so
    extend /usr/lib64/crash/extensions/echo.so
    extend /usr/lib64/crash/extensions/trace.so
    extend /usr/lib64/crash/extensions/sial.so
    extend /usr/lib64/crash/extensions/snap.so

    ==> run-crash <==
    #! /bin/bash
    cd /mnt/hgfs/Shared/DATA/DUMPS/bug781329_find_lock_page
    kernel=vmlinux-2.6.32.45-0.3.2_1.0400.6421-cray_gem_c
    dump=dump.070040
    map=System.map-2.6.32.45-0.3.2_1.0400.6421-cray_gem_c
    crash=/usr/bin/crash
    export CRASH_EXTENSIONS=/root/.crash.d
    ini=
    test -f init.crash && ini="-i init.crash"
    exec $crash $ini $kernel $map $dump

To see what-all crash has loaded and what new commands they provide,
type "extend" with no arguments.