Public SourceMage Discussion List

[Geoffrey Derber <Geoffrey.Derber AT Trinity.edu>]

shivaken wrote:
> Hi all,
>
> I want to propose to a sorcery improvement.
>
> Now almost spell uses "prepare_install" to clean up obsoleted files.
> like..
> ------------
> make
> prepare_install
> make install
> -------------
> Because of this, at casting glibc, /etc/ld.so.cashe can be removed.
> Then that will cause error.
>
> To avoid this, you have to install newer files first, then remove just only 
> old files. We can find old files with comparing old install log
> (/var/log/sorcery/install/$SPELL) with new install log
>
> At that time we have to take care about config files and user data.
> For example, mysql spell installs mysql database files. We should not delete 
> them. So sorcery must know unremoval files and directory to clean up safely.
> Fortunately, Spell Writer can recognize those unremoval files.
>
> I want sorcery to be implemented that "install 1st, then clean up".
>
> How do you feel?
>
> --- shivaken

I still think the best solution for glibc would be to do what has been 
suggested long ago, (And I'm sure lunar does it this way, but we never 
did), which is to copy the files to a temporary directory, prior to 
removal, then update.

There BUILD file actually contains the following that between their make 
and make install

================================================================
  make                                        &&

  # Preserve the old glibc temporarily
case  "`arch`" in
  "alpha")
          LD=/lib/ld-linux.so.2
          GLIBC=/lib/libc.so.6.1
          DL=/lib/libdl.so.2.1
          M=/lib/libm.so.6.1
          RT=/lib/librt.so.1
          PTHREAD=/lib/libpthread.so.0
          NSS=/lib/libnss_files.so.2
          UTIL=/lib/libutil.so.1.1
          NSL=/lib/libnsl.so.1.1
          CRYPT=/lib/libcrypt.so.1.1
          ;;
   ppc)
          LD=/lib/ld.so.1
          GLIBC=/lib/libc.so.6
          DL=/lib/libdl.so.2
          M=/lib/libm.so.6
          RT=/lib/librt.so.1
          PTHREAD=/lib/libpthread.so.0
          NSS=/lib/libnss_files.so.2
          UTIL=/lib/libutil.so.1
          NSL=/lib/libnsl.so.1
          CRYPT=/lib/libcrypt.so.1
          ;;
  *)
          LD=/lib/ld-linux.so.2
          GLIBC=/lib/libc.so.6
          DL=/lib/libdl.so.2
          M=/lib/libm.so.6
          RT=/lib/librt.so.1
          PTHREAD=/lib/libpthread.so.0
          NSS=/lib/libnss_files.so.2
          UTIL=/lib/libutil.so.1
          NSL=/lib/libnsl.so.1
          CRYPT=/lib/libcrypt.so.1
          ;;
esac

  cp $LD /lib/ld-lunar.so      &&
  cp $GLIBC /lib/libc-lunar.so        &&
  cp $DL /lib/libdl-lunar.so      &&
  cp $M /lib/libm-lunar.so        &&
  cp $RT /lib/librt-lunar.so      &&
  cp $PTHREAD /lib/libpthread-lunar.so &&
  cp $NSS /lib/libnss_files-lunar.so &&
  cp $UTIL /lib/libutil-lunar.so  &&
  cp $NSL /lib/libnsl-lunar.so    &&
  cp $CRYPT /lib/libcrypt-lunar.so &&

  # Setup links for libraries
  sln /lib/ld-lunar.so $LD     &&
  sln /lib/libc-lunar.so $GLIBC       &&
  sln /lib/libdl-lunar.so $DL     &&
  sln /lib/libm-lunar.so $M       &&
  sln /lib/librt-lunar.so $RT     &&
  sln /lib/libpthread-lunar.so $PTHREAD &&
  sln /lib/libnss_files-lunar.so $NSS &&
  sln /lib/libutil-lunar.so $UTIL &&
  sln /lib/libnsl-lunar.so $NSL   &&
  sln /lib/libcrypt-lunar.so $CRYPT &&

  # This removes the old glibc
  prepare_install                             &&

  # And now we install the new
  make install                                &&