#!/bin/sh
## build glibc-$VERSION for AlphaSlack
CWD=`pwd`
TMP=/tmp
VERSION=${VERSION:-2.3.6}
CVSVER=2.3.6
HEADERSTWOSIX=2.6.18
ARCH=alpha
BUILD=2
TARGET=$ARCH-alphaslack-linux

# I'll break this out as an option for fun  :-)
if [ "$ARCH" = "s390" ]; then
  OPTIMIZ="-O3"
elif [ "$ARCH" = "x86_64" ]; then
  OPTIMIZ="-O3"
elif [ "$ARCH" = "alpha" ]; then
  OPTIMIZ="-O3"
else
  OPTIMIZ="-O2"
fi

# We need another tmp initial $DESTDIR for the NPTL version now, too:
export PKG=$TMP/package-glibc-incoming-tree
# Then we'll compile the following packages from it:
PGLIBC=$TMP/package-glibc
PSOLIBS=$TMP/package-glibc-solibs
PZONE=$TMP/package-glibc-zoneinfo
PI18N=$TMP/package-glibc-i18n
PPROFILE=$TMP/package-glibc-profile
PDEBUG=$TMP/package-glibc-debug

# Empty these locations first:
for dir in $PKG $PGLIBC $PSOLIBS $PZONE $PI18N $PPROFILE $PDEBUG ; do
  if [ -d $dir ]; then
    rm -rf $dir
  fi
  mkdir -p $dir
done
if [ -d $TMP/glibc-$VERSION ]; then
  rm -rf $TMP/glibc-$VERSION
fi

apply_patches() {
# Use old-style locale directories rather than a single (and strangely
# formatted) /usr/lib/locale/locale-archive file:
zcat $CWD/glibc.locale.no-archive.diff.gz | patch -p1 --verbose || exit
# Fix XMMS/X crash caused by interaction with nVidia drivers:
zcat $CWD/glibc.tls.crashfix.diff.gz | patch -p1 --verbose || exit
# Fix NIS netgroups:
zcat $CWD/glibc.nis-netgroups.diff.gz | patch -p1 --verbose || exit
# Evidently glibc never expected Linux kernel versions to be in the
# format 1.2.3.4.  This patch makes glibc consider the kernel version
# to be only the first three digit groups found, and drops any
# trailing non-digit characters:
zcat $CWD/glibc.kernelversion.diff.gz | patch -p1 --verbose || exit 1
if [ $CVSVER = 2.3.6 ]; then
  # Update the timezone information, or a lot of people will be very unhappy...
    ( cd timezone
    tar xzf $CWD/tzdata2006k.tar.gz
    chown root:root *
    mv yearistype.sh yearistype
    chmod 644 *
    chmod 755 yearistype
    mkdir tzcode
    cd tzcode
    tar xzf $CWD/tzcode2006k.tar.gz
    chown -R root:root .
    chmod 644 *
    cp -a *.c *.h ..
    )
  else
  exit 1
  fi
}

# Create an incoming directory structure for glibc to be built into:
mkdir -p $PKG/lib
mkdir -p $PKG/sbin
mkdir -p $PKG/usr/{bin,lib,sbin,include,doc,man,share}

( cd $TMP
tar xjf $CWD/glibc-$CVSVER.tar.bz2
cd glibc-$CVSVER

tar xjf $CWD/glibc-libidn-$VERSION.tar.bz2
tar xjf $CWD/glibc-linuxthreads-$VERSION.tar.bz2

chown -R root.root .

# Clean up leftover CVS directories:
find . -type d -name CVS -exec rm -r {} \;

# Apply patches; exit if any fail.
apply_patches
if [ ! $? = 0 ]; then
  exit 1
fi

# Make build directory:
mkdir build-glibc-$VERSION
cd build-glibc-$VERSION
#  --enable-kernel=2.6.4 \ if 2.6.18 not work

CFLAGS="-g $OPTIMIZ" \
../configure \
  --prefix=/usr \
  --enable-kernel=2.6.18 \
  --with-headers=/usr/src/linux-${HEADERSTWOSIX}/include \
  --enable-add-ons=libidn,nptl \
  --with-tls \
  --with-__thread \
  --without-cvs \
  $TARGET || exit

make -s || exit
make -s install install_root=$PKG || exit
make -s localedata/install-locales install_root=$PKG || exit

# The prevailing standard seems to be putting unstripped libraries in
# /usr/lib/debug/ and stripping the debugging symbols from all the other
# libraries.  Only linuxthreads versions are provided.
mkdir -p $PKG/usr/lib/debug
cp -a $PKG/lib/l*.so* $PKG/usr/lib/debug
cp -a $PKG/usr/lib/*.a $PKG/usr/lib/debug
# Don't need debug+profile:
( cd $PKG/usr/lib/debug ; rm -f *_p.* )
# NOTE:  Is there really a reason for the glibc-debug package?
# If you're debugging glibc, you can also compile it, right?

## COMMENTED OUT:  There's no reason for profile libs to include -g information.
## Put back unstripped profiling libraries:
#mv $PKG/usr/lib/debug/*_p.a $PKG/usr/lib
# It might be best to put the unstripped and profiling libraries in glibc-debug and glibc-profile.

# I don't think "strip -g" causes the pthread problems.  It's --strip-unneeded that does.
strip -g $PKG/lib/l*.so*
strip -g $PKG/usr/lib/l*.so*
strip -g $PKG/usr/lib/lib*.a

# Back to the sources dir to add some files/docs:
cd $TMP/glibc-$CVSVER

# We'll automatically install the config file for the Name Server Cache Daemon.
# Perhaps this should also have some commented-out startup code in rc.inet2...
mkdir -p $PKG/etc
cat nscd/nscd.conf > $PKG/etc/nscd.conf.new

# Not a bad idea to have this here as well:
( cd $PKG ; tar xzf $CWD/timezone.tar.gz )

## Install docs:
( mkdir -p $PKG/usr/doc/glibc-$VERSION
  cp -a BUGS CONFORMANCE COPYING COPYING.LIB FAQ INSTALL INTERFACE LICENSES NAMESPACE NEWS NOTES PROJECTS README README.libm $PKG/usr/doc/glibc-$VERSION
  cd linuxthreads
  mkdir -p $PKG/usr/doc/glibc-$VERSION/linuxthreads
  cp -a Banner FAQ.html LICENSE README README.Xfree3.2 linuxthreads.texi Examples $PKG/usr/doc/glibc-$VERSION/linuxthreads
  cd man
  mkdir $PKG/usr/man/man3
  for file in *.man ; do
  cat $file | gzip -9c > $PKG/usr/man/man3/`basename $file .man`.3.gz
  done
  find $PKG/usr/doc/glibc-$VERSION -type d | xargs chmod 755 
  find $PKG/usr/doc/glibc-$VERSION -type f | xargs chmod 644 )

# Don't forget to add the /usr/share/zoneinfo/localtime -> /etc/localtime symlink! :)
if [ ! -r $PKG/usr/share/zoneinfo/localtime ]; then
  ( cd $PKG/usr/share/zoneinfo ; ln -sf /etc/localtime . )
fi

# But, it's hard to get me to break old habits, so we'll continue the tradition here:
chown -R root.bin $PKG/sbin $PKG/usr/bin $PKG/usr/sbin

# Strip most binaries:
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip -g 2> /dev/null
)

# Fix info dir:
rm $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*

# This is junk
rm $PKG/etc/ld.so.cache
rm $PKG/sbin/sln
( cd $PKG
  find . -name "*.orig" -exec rm {} \;
)

##################################
# OK, time to make some packages #
##################################

# glibc-zoneinfo.  We will start with an easy one to avoid breaking a sweat.  ;-)
cd $PZONE
explodepkg $CWD/timezone.tar.gz
mkdir $PZONE/install
cat $CWD/doinst.sh-glibc-zoneinfo > $PZONE/install/doinst.sh
cat $CWD/slack-desc.glibc-zoneinfo > $PZONE/install/slack-desc
cd $PZONE/usr/share
mv $PKG/usr/share/zoneinfo .
cd $PZONE
# This is already hard-coded into doinst.sh:
rm -f etc/localtime
# Wrap it up:
makepkg -l y -c n $TMP/glibc-zoneinfo-$VERSION-$ARCH-$BUILD.tgz

# glibc-profile:
cd $PPROFILE
mkdir -p usr/lib
# Might as well just grab these with 'mv' to simplify things later:
mv $PKG/usr/lib/lib*_p.a usr/lib
# Profile libs should be stripped.  Use the debug libs to debug...
( cd usr/lib ; strip -g *.a )
mkdir install
cp -a $CWD/slack-desc.glibc-profile install/slack-desc
makepkg -l y -c n $TMP/glibc-profile-$VERSION-$ARCH-$BUILD.tgz

# THIS IS NO LONGER PACKAGED (or is it?  might be better to let it be made, and then ship it or not...)
# glibc-debug:
cd $PDEBUG
mkdir -p usr/lib
# Might as well just grab these with 'mv' to simplify things later:
mv $PKG/usr/lib/debug usr/lib
mkdir install
cp -a $CWD/slack-desc.glibc-debug install/slack-desc
makepkg -l y -c n $TMP/glibc-debug-$VERSION-$ARCH-$BUILD.tgz
## INSTEAD, NUKE THESE LIBS
#rm -rf $PKG/usr/lib/debug

# glibc-i18n:
cd $PI18N
mkdir -p usr/lib
rm -rf usr/lib/locale
mv $PKG/usr/lib/locale usr/lib
mkdir -p usr/share
mv $PKG/usr/share/i18n usr/share
mv $PKG/usr/share/locale usr/share
mkdir install
cp -a $CWD/slack-desc.glibc-i18n install/slack-desc
makepkg -l y -c n $TMP/glibc-i18n-$VERSION-$ARCH-$BUILD.tgz

# glibc-solibs:
cd $PSOLIBS
mkdir -p lib
cp -a $PKG/lib/* lib
( cd lib
  mkdir incoming
  mv *so* incoming
  mv incoming/libSegFault.so .
)
mkdir -p usr
# This skirts the root.bin issue.
cp -a $PKG/usr/bin usr
mv usr/bin/ldd .
rm usr/bin/*
mv ldd usr/bin
mkdir -p usr/lib
# The gconv directory has a lot of stuff, but including it here will save some problems.
# Seems standard elsewhere.
cp -a $PKG/usr/lib/gconv usr/lib
mkdir -p usr/libexec
cp -a $PKG/usr/libexec/pt_chown usr/libexec
# Same usr.bin deal:
cp -a $PKG/sbin .
mv sbin/ldconfig .
rm sbin/*
mv ldconfig sbin
mkdir install
cp -a $CWD/slack-desc.glibc-solibs install/slack-desc
cp -a $CWD/doinst.sh-glibc-solibs install/doinst.sh
# Ditch links:
find . -type l -exec rm {} \;
# Build the package:
makepkg -l y -c n $TMP/glibc-solibs-$VERSION-$ARCH-$BUILD.tgz

# And finally, the complete "all-in-one" glibc package is created
# from whatever was leftover:
cd $PGLIBC
mv $PKG/* .
# Ditch links (these are in doinst.sh-glibc):
find . -type l -exec rm {} \;
mkdir install
cp -a $CWD/slack-desc.glibc install/slack-desc
cp -a $CWD/doinst.sh-glibc install/doinst.sh
( cd lib
  mkdir incoming
  mv *so* incoming
  mv incoming/libSegFault.so .
)
# Build the package:
makepkg -l y -c n $TMP/glibc-$VERSION-$ARCH-$BUILD.tgz

# Done!
echo
echo "glibc packages built in $TMP!"
) 2>&1 | tee /tmp/glibc.build.log