OpenPKG Specs: openpkg/lsync@4a34d7a82eab (annotated)

openpkg/lsync@4a34d7a82eab (annotated)

openpkg/lsync

Tue, 29 Mar 2011 20:04:34 +0200

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 29 Mar 2011 20:04:34 +0200
changeset 334: 4a34d7a82eab
child 428: f880f219c566
permissions: -rw-r--r--

Rework package yet again, correcting and introducing new buildconf logic:
Conditionally disable bootstrap stage comparison correctly, correct
english grammar, better find system as(1) and ld(1), indotruce detailed
optimization option messages, more completely guess cpu types, allow
profiled bootstrapping without a preinstalled GCC because many other
compilers have long since implemented 64-bit arithmetic, instruct make
to build sequentially (not in sparallel) when building a profiled
bootstrap as GCC online documents recommend, and generally improve
comment blocks.

The single most important correction in this changeset relates to the
GCC changed optimization policy since at least GCC 4.5, in which -march
is always passed and not always correctly guessed. In the case of this
package, allowing GCC to guess the architecture leads to wild build
errors at various subcomponents (zlib, libgcc, libiberty...) and
bootstrap stages. It seems quite platform specific, and the safest
approach to correcting this seems to be explicitly always specifying the
-march argument when bootstrapping GCC. Because the best choice 'native'
is not available when bootstrapping using a foreign (non GCC) compiler,
a guess is made according to rpmmacros l_platform in that case.

It is questionable as to whether these recent optimization changes
on the part of GCC or this package are compatible with each other,
or if either are complete or correct at all. At least applying these
corrections allows this package to build again in most cases test.

 #!@l_prefix@/lib/openpkg/bash
 ##
 ##  lsync -- Access Layer Synchronization Tool
 ##  Copyright (c) 2000-2007 OpenPKG Foundation e.V. <http://openpkg.net/>
 ##  Copyright (c) 2000-2007 Ralf S. Engelschall <http://engelschall.com/>
 ##
 ##  Permission to use, copy, modify, and distribute this software for
 ##  any purpose with or without fee is hereby granted, provided that
 ##  the above copyright notice and this permission notice appear in all
 ##  copies.
 ##
 ##  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 ##  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 ##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 ##  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
 ##  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ##  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ##  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 ##  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 ##  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 ##  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 ##  SUCH DAMAGE.
 ##
 ##
 ##  filesystem hierarchy configuration
 ##
 #   program name and version/date
 progname="lsync"
 progvers="1.0.4"
 progdate="04-Aug-2001"
 #   root directory
 #   (if empty, .lsyncrc files provide default)
 root=""
 #   subdirectory where packages are physically installed
 pkgdir="PKG"
 #   subdirectories which are synchronized between physically
 #   installed package areas and access layer
 subdirs="bin,sbin,man,info,include,lib"
 ##
 ##  command line option parsing
 ##
 #   default run-time modes
 nop=0
 quiet=0
 trace=0
 help=''
 init=0
 uninstall=0
 local=0
 #   be aware of .lsyncrc files
 cwd=`pwd`
 while [ 1 ]; do
     if [ -f "$cwd/.lsyncrc" ]; then
         set -- `cat $cwd/.lsyncrc` "$@"
     fi
     [ ".$cwd" = ./ ] && break
     cwd=`echo $cwd | sed -e 's;/[^/]*$;;' -e 's;^$;/;'`
 done
 if [ ".$HOME" != . -a -f "$HOME/.lsyncrc" ]; then
     set -- `cat $HOME/.lsyncrc` "$@"
 fi
 #   iterate over argument line
 for opt
 do
     case $opt in
         -*=*) arg=`echo "$opt" | sed 's/^[-_a-zA-Z0-9]*=//'` ;;
            *) arg='' ;;
     esac
     case $opt in
         -n|--nop       ) nop=1         ;;
         -q|--quiet     ) quiet=1       ;;
         -t|--trace     ) trace=1       ;;
         -v|--version   ) version=1     ;;
         -h|--help      ) help="Usage"  ;;
         -i|--init      ) init=1        ;;
         -u|--uninstall ) uninstall=1   ;;
         -l|--local     ) local=1       ;;
         --root=*       ) root=$arg     ;;
         --pkgdir=*     ) pkgdir=$arg   ;;
         --subdirs=*    ) subdirs=$arg  ;;
         *              ) help="Invalid option \`$opt'"; break ;;
     esac
 done
 #   error or usage message
 if [ ".$help" != . ]; then
     if [ ".$help" != ".Usage" ]; then
         echo "$progname:ERROR: $help" 1>&2
     fi
     cat 1>&2 <<EOT
 Usage: $progname [options]
 Global options:
   --version,   -v   display tool version information
   --help,      -h   display usage information
   --init,      -i   create an initial directory hierarchy
 Run-time options:
   --nop,       -n   perform no filesystem operations
   --quiet,     -q   display no verbose messages
   --trace,     -t   display performed filesystem operations
   --local,     -l   process a local package area only
   --uninstall, -u   uninstall all files
 Filesystem options:
   --root=DIR        override root directory
   --pkgdir=DIR      override package sub-directory
   --subdirs=DIR     override synchronized sub-directories
 Current configuration:
   root directory:       $root
   package root subdir:  $pkgdir
   synchronized subdirs: $subdirs
 EOT
     if [ ".$help" != ".Usage" ]; then
         exit 2
     else
         exit 0
     fi
 fi
 #   version information
 if [ ".$version" = .1 ]; then
     echo "$progname $progvers ($progdate)"
     exit 0
 fi
 #   make sure a root directory was found or specified
 if [ ".$root" = . ]; then
     echo "$progname:ERROR: no root directory specified!" 1>&2
     echo "$progname:HINT: use --root=DIR option explicitly on command line" 1>&2
     echo "$progname:HINT: or implicitly inside an .lsyncrc file in your home" 1>&2
     echo "$progname:HINT: directory or in any parent directory." 1>&2
     exit 3
 fi
 ##
 ##  helper functions
 ##
 display_hd () {
     if [ ".$headline" != . ]; then
         if [ ".$quiet" = .0 ]; then
             echo "$headline"
         fi
         headline=''
     fi
 }
 display_op () {
     if [ ".$quiet" = .0 ]; then
         echo "  $@"
     fi
 }
 display_warning () {
     echo "$progname:WARNING: $*" 1>&2
 }
 display_error () {
     echo "$progname:ERROR: $*" 1>&2
 }
 perform_op () {
     if [ ".$trace" = .1 ]; then
         echo "  \$ $@"
     fi
     if [ ".$nop" = .0 ]; then
         eval "$@"
     fi
 }
 ##
 ##  main processing
 ##
 #   extend a "man" subdir to a complete list with subdirs
 #   in order to avoid special cases in the loop processing
 manex=''
 if [ ".$init" = .1 ]; then
     manex='man'
 fi
 for i in 1 2 3 4 5 6 7 8; do
     manex="$manex,man/man$i"
 done
 manex=`echo $manex | sed -e 's;^,;;'`
 subdirs=`echo $subdirs | sed -e "s;man;$manex;"`
 #   special processing: create initial hierarchy
 if [ ".$init" = .1 ]; then
     if [ ! -d $root ]; then
         echo "creating $root"
         perform_op "mkdir $root" || exit 1
     fi
     for subdir in $pkgdir `IFS=,; echo $subdirs`; do
         if [ ! -d "$root/$subdir" ]; then
             echo "creating $root/$subdir"
             perform_op "mkdir $root/$subdir" || exit 1
         fi
     done
     exit 0
 fi
 #   make sure the root directory actually exists
 if [ ! -d "$root" ]; then
     display_warning "root directory \`$root' does not exist"
     exit 3
 fi
 #   if processing is restricted to a local package area, pre-determine its name
 if [ ".$local" = .1 ]; then
    realroot=`cd $root; pwd`
    realthis=`pwd`
    pkgname=`expr "$realthis" : "^$realroot/$pkgdir/\\([^/]*\\).*"`
    if [ ".$pkgname" = . ]; then
        display_error "you are not staying under a local package sub-directory"
        exit 3
    fi
 fi
 #   now perform the synchronization for each sub-directory...
 for subdir in `IFS=,; echo $subdirs`; do
     headline="$root/$subdir:"
     #   make sure the subdir actually exists in the access layer
     if [ ! -d "$root/$subdir" ]; then
         display_warning "access layer directory \`$root/$subdir' does not exist"
         continue
     fi
     #
     #   PASS 1: remove dangling symbolic links in access layer
     #
     #   iterate over all symlinks in the access layer subdir
     for link in . `ls "$root/$subdir/" | sed -e "s;^$root/$subdir/*;;g"`; do
         test ".$link" = ".." && continue
         #   determine the target file of the symlink
         target=`ls -l "$root/$subdir/$link" 2>/dev/null | sed -e 's;.*-> *;;'`
         if [ ".$target" = . ]; then
             display_warning "$root/$subdir/$link seems to be not a symbolic link"
             continue
         fi
         #   (optionally) make sure that link target points into local package area
         if [ ".$local" = .1 -a .`expr $target : "../$pkgdir/$pkgname/.*"` = .0 ]; then
             continue
         fi
         #   check whether link is valid, i.e., points to
         #   an existing target file or directory
         if [ ".$uninstall" = .1 ] ||\
            [ ! -f "$root/$subdir/$target" -a \
              ! -d "$root/$subdir/$target"      ]; then
             #   target no longer exists, so remove dangling symlink
             display_hd
             display_op "remove: $link -> $target"
             perform_op "rm -f $root/$subdir/$link"
         fi
     done
     #   if we are uninstalling only, our work is now done
     if [ ".$uninstall" = ".1" ]; then
         continue
     fi
     #
     #   PASS 2: create new symbolic links in access layer
     #
     #   calculate the corresponding reverse directory for the current subdir
     revdir=`echo $subdir | sed -e 's;[^/][^/]*;..;g'`
     #   iterate over all package directories
     for dir in . `ls "$root/$pkgdir/" | sed -e "s;^$root/$pkgdir/*;;g"`; do
         test ".$dir" = ".." && continue
         #   (optionally) make sure that we operate only for the local package area
         if [ ".$local" = .1 -a ".$dir" != ".$pkgname" ]; then
             continue
         fi
         #   skip all directories with appended version numbers
         #   in order to support manual versioning of packages
         case $dir in
             *-[0-9]* ) continue ;;
         esac
         #   skip if package directory or package sub-directories has sticky bit set
         if [ ".`ls -l -d $root/$pkgdir/$dir 2>/dev/null | cut -c10`" = .t ] ||\
            [ ".`ls -l -d $root/$pkgdir/$dir/$subdir 2>/dev/null | cut -c10`" = .t ]; then
             continue
         fi
         #   check whether the processed subdir exists in package area
         if [ -d "$root/$pkgdir/$dir/$subdir" ]; then
             #   iterate over all files/directories in package's subdir
             for file in . `ls "$root/$pkgdir/$dir/$subdir/" |\
                            sed -e "s;^$root/$pkgdir/$dir/$subdir/*;;g"`; do
                 test ".$file" = ".." && continue
                 #   calculate the access layer symlink target
                 target="$revdir/$pkgdir/$dir/$subdir/$file"
                 #   check whether a possibly conflicting symlink exists
                 exlink=`ls -l $root/$subdir/$file 2>/dev/null`
                 if [ ".$exlink" != . ]; then
                     extarget=`echo $exlink | sed -e 's;.*-> *;;'`
                     if [ ".$extarget" = . ]; then
                         display_warning "$root/$subdir/$file exits, but seems to be not a symbolic link"
                     elif [ ".$extarget" != ".$target" ]; then
                         display_hd
                         display_op "conflict: $file -> $extarget [existing]"
                         display_op "          $file -> $target [alternative]"
                     fi
                     continue
                 fi
                 #   create new symlink in access layer
                 display_hd
                 display_op "create: $file -> $target"
                 perform_op "cd $root/$subdir && ln -s $target $file"
             done
         fi
     done
 done

OpenPKG Specs / annotate

openpkg/lsync@4a34d7a82eab (annotated)

openpkg/lsync