#!/bin/sh
## build glibc-$VERSION for Slackware
## by Patrick J. Volkerding <volkerdi@slackware.com>
## modified for Slamd64 (multilib)
## by Fred Emmott <mail@fredemmott.co.uk>
CWD=$(pwd)

# Temporary build location.  This should not be a directory
# path a non-root user could create later...
TMP=${TMP:-/glibc-tmp-$(mcookie)}
if [ ! -d $TMP ]; then
  mkdir -p $TMP
fi

VERSION=${VERSION:-2.7}
CVSVER=2.7

# Sanity check on the version number in the install scripts:
if ! grep -vq libutil-$VERSION}.so $CWD/doinst.sh-glibc ; then
  echo "FATAL:  doinst.sh scripts have wrong version numbers."
  exit 1
fi

# Fill in the kernel version to build against:
KERNEL_HEADERS=/usr/include # otherwise -m32 breaks

# $ARCH may be preset, otherwise i486 compatibility with i686 binary
# structuring is the Slackware default, since this is what gcc-3.2+
# requires for binary compatibility with previous releases.
ARCH=${ARCH:-x86_64}

# This should be i486 for all 32-bit x86 arch:
TARGET=${TARGET:-x86_64}
TARGET32=${TARGET32:-i486} # only needed on multilib

DISTRO=${DISTRO:-slamd64}

BUILD=${BUILD:-8}

# Automatically work out our libdir
if [ $DISTRO = slamd64 ]; then
	LIBSUFFIX=64
else
	LIBSUFFIX=
fi

# What do we call our packages?
if [ $DISTRO = slackware ]; then
	PKGARCH=$ARCH
	PKGNOARCH=noarch
else
	PKGARCH=${ARCH}_${DISTRO}
	PKGNOARCH=noarch_$DISTRO
fi

# This function fixes a doinst.sh file for multilib
fix_doinst() {
	if [ "x$LIBSUFFIX" = "x" ]; then
		return;
	fi;
	# Fix "( cd usr/lib ;" and friends
	sed -i "s#lib ;#lib${LIBSUFFIX} ;#" install/doinst.sh
	# Fix "lib/"
	sed -i "s#lib/#lib${LIBSUFFIX}/#g" install/doinst.sh
	# Fix "( cd lib"
	sed -i "s#( cd lib\$#( cd lib${LIBSUFFIX}#" install/doinst.sh

	if [ $DISTRO = slamd64 ]; then # I believe this is only needed for x86_64 mulilib
		sed -i 's#ld-linux.so.2#ld-linux-x86-64.so.2#' install/doinst.sh
	fi
}

# This is a patch function to put all glibc patches in the build script
# up near the top.
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 1
  # The is_IS locale is causing a strange error about the "echn" command
  # not existing.  This patch reverts is_IS to the version shipped in
  # glibc-2.5:
  zcat $CWD/is_IS.diff.gz | patch -p1 --verbose || exit 1
  # Fix NIS netgroups:
  zcat $CWD/glibc.nis-netgroups.diff.gz | patch -p1 --verbose || exit 1
  # 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
  # Support ru_RU.CP1251 locale:
  zcat $CWD/glibc.ru_RU.CP1251.diff.gz | patch -p1 --verbose || exit 1
  # Fix missing MAX macro in getcwd.c:
  zcat $CWD/glibc.getcwd.max.macro.diff.gz | patch -p1 --verbose || exit 1
  # Slamd64 - Disable check for forced unwind (Patch from eglibc)
  zcat $CWD/glibc.pthread-disable-forced-unwind-check.diff.gz | patch -p1 --verbose || exit 1
  # Update the timezone information.
  ( cd timezone
    tar xzf $CWD/tzdata2008a.tar.gz || exit 1
    chown root:root *
    mv yearistype.sh yearistype
    chmod 644 *
    chmod 755 yearistype
    mkdir tzcode
    cd tzcode
    tar xzf $CWD/tzcode2008a.tar.gz || exit 1
    chown -R root:root .
    chmod 644 *
    cp -a *.c *.h ..
  ) || exit 1
}

# I'll break this out as an option for fun  :-)
if [ "$ARCH" = "i386" ]; then
  OPTIMIZ="-O3 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  OPTIMIZ="-O3 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i586" ]; then
  OPTIMIZ="-O3 -march=i586"
elif [ "$ARCH" = "i686" ]; then
  OPTIMIZ="-O3 -march=i686"
elif [ "$ARCH" = "athlon" ]; then
  OPTIMIZ="-O3 -march=athlon"
elif [ "$ARCH" = "s390" ]; then
  OPTIMIZ="-O3"
elif [ "$ARCH" = "x86_64" ]; then
  OPTIMIZ="-O3 -fPIC"
else
  OPTIMIZ="-O3"
fi

# This is going to be the initial $DESTDIR:
export PKG=$TMP/package-glibc-incoming-tree
PGLIBC=$TMP/package-glibc
PGLIBC32=$TMP/package-glibc32
PSOLIBS=$TMP/package-glibc-solibs
PZONE=$TMP/package-glibc-zoneinfo
PI18N=$TMP/package-glibc-i18n
PI18N32=$TMP/package-glibc32-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

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

# Begin extract/compile:
cd $TMP
rm -rf glibc-$CVSVER
tar xjvf $CWD/glibc-$CVSVER.tar.bz2
cd glibc-$CVSVER
tar xjf $CWD/glibc-libidn-$VERSION.tar.bz2
mv glibc-libidn-$VERSION libidn || exit 1

chown -R root:root .
find . -perm 666 -exec chmod 644 {} \;
find . -perm 664 -exec chmod 644 {} \;
find . -perm 600 -exec chmod 644 {} \;
find . -perm 444 -exec chmod 644 {} \;
find . -perm 400 -exec chmod 644 {} \;
find . -perm 440 -exec chmod 644 {} \;
find . -perm 777 -exec chmod 755 {} \;
find . -perm 775 -exec chmod 755 {} \;
find . -perm 511 -exec chmod 755 {} \;
find . -perm 711 -exec chmod 755 {} \;
find . -perm 555 -exec chmod 755 {} \;

# 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

build_glibc() {
	CFLAGS="-g $OPTIMIZ" \
	../configure \
	  --prefix=/usr \
		--libdir=/usr/lib${LIBSUFFIX} \
	  --enable-kernel=2.6.16 \
	  --with-headers=${KERNEL_HEADERS} \
	  --enable-add-ons=libidn,nptl \
	  --enable-profile \
	  --infodir=/usr/info \
	  --mandir=/usr/man \
	  --with-tls \
	  --with-__thread \
	  --without-cvs \
	  $TARGET-$DISTRO-linux || exit 1

	make -j5 || exit 1
	make install install_root=$PKG || exit 1
	make localedata/install-locales install_root=$PKG || exit 1
}

# build 32-bit first so that 64-bit stuff overwrites the
# 32-bit stuff where appropriate
if [ $DISTRO == slamd64 ]; then 
	echo "BUILDING DAS 32-BiT NPTL GLIBC"
	(
		mkdir build-glibc32-$VERSION
		cd build-glibc32-$VERSION
		export TARGET=$TARGET32
		export CC="gcc -m32"
		export LIBSUFFIX=
		export OPTIMIZ="-O3 -march=i486 -mtune=i686"
		build_glibc
	)
fi

echo "BUILDING DAS NPTL GLIBC"
# Make build directory:
mkdir build-glibc-$VERSION
cd build-glibc-$VERSION
build_glibc

# The prevailing standard seems to be putting unstripped libraries in
# /usr/lib/debug/ and stripping the debugging symbols from all the other
# libraries.
mkdir -p $PKG/usr/lib${LIBSUFFIX}/debug
cp -a $PKG/lib${LIBSUFFIX}/l*.so* $PKG/usr/lib${LIBSUFFIX}/debug
cp -a $PKG/usr/lib${LIBSUFFIX}/*.a $PKG/usr/lib${LIBSUFFIX}/debug
# Don't need debug+profile:
( cd $PKG/usr/lib${LIBSUFFIX}/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 $PKG/lib${LIBSUFFIX}/l*.so*
strip -g $PKG/usr/lib${LIBSUFFIX}/l*.so*
strip -g $PKG/usr/lib${LIBSUFFIX}/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

# Install some scripts to help select a timezone:
mkdir -p $PKG/var/log/setup
cp -a $CWD/timezone-scripts/setup.timeconfig $PKG/var/log/setup
chown root:root $PKG/var/log/setup/setup.timeconfig
chmod 755 $PKG/var/log/setup/setup.timeconfig
mkdir -p $PKG/usr/sbin
cp -a $CWD/timezone-scripts/timeconfig $PKG/usr/sbin
chown root:root $PKG/usr/sbin/timeconfig
chmod 755 $PKG/usr/sbin/timeconfig

## Install docs:
( mkdir -p $PKG/usr/doc/glibc-$VERSION
  cp -a \
    BUGS CONFORMANCE COPYING COPYING.LIB FAQ INSTALL LICENSES NAMESPACE \
    NEWS NOTES PROJECTS README README.libm \
    $PKG/usr/doc/glibc-$VERSION
)

# 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

# OK, there are some very old Linux standards that say that any binaries in a /bin or
# /sbin directory (and the directories themselves) should be group bin rather than
# group root, unless a specific group is really needed for some reason.
#
# I can't find any mention of this in more recent standards docs, and always thought
# that it was pretty cosmetic anyway (hey, if there's a reason -- fill me in!), so
# it's possible that this ownership change won't be followed in the near future
# (it's a PITA, and causes many bug reports when the perms change is occasionally
# forgotten).
#
# But, it's hard to get me to break old habits, so we'll continue the tradition here:
#
# No, no we won't.  You know how we love to break traditions.

# 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
( 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
# Install some scripts to help select a timezone:
mkdir -p $PZONE/var/log/setup
cp -a $CWD/timezone-scripts/setup.timeconfig $PZONE/var/log/setup
chown root:root $PZONE/var/log/setup/setup.timeconfig
chmod 755 $PZONE/var/log/setup/setup.timeconfig
mkdir -p $PZONE/usr/sbin
cp -a $CWD/timezone-scripts/timeconfig $PZONE/usr/sbin
chown root:root $PZONE/usr/sbin/timeconfig
chmod 755 $PZONE/usr/sbin/timeconfig
mkdir $PZONE/install
cat $CWD/doinst.sh-glibc-zoneinfo > $PZONE/install/doinst.sh
cat $CWD/slack-desc.glibc-zoneinfo > $PZONE/install/slack-desc
mkdir -p $PZONE/usr/share
cd $PZONE/usr/share
cp -a --verbose $PKG/usr/share/zoneinfo .
cd $PZONE
mkdir -p $PZONE/etc
# This is already hard-coded into doinst.sh (like it'll be there anyway ;-):
rm -f etc/localtime
# Wrap it up:
makepkg -l y -c n $TMP/glibc-zoneinfo-$VERSION-$PKGNOARCH-$BUILD.tgz

# glibc-profile:
cd $PPROFILE
mkdir -p usr/lib${LIBSUFFIX}
# Might as well just grab these with 'mv' to simplify things later:
mv $PKG/usr/lib${LIBSUFFIX}/lib*_p.a usr/lib${LIBSUFFIX}
# Profile libs should be stripped.  Use the debug libs to debug...
( cd usr/lib${LIBSUFFIX} ; strip -g *.a )
mkdir install
install -m 644 -o root -g root $CWD/slack-desc.glibc-profile install/slack-desc
makepkg -l y -c n $TMP/glibc-profile-$VERSION-$PKGARCH-$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 $PDEBUG
mkdir -p usr/lib${LIBSUFFIX}/
# Might as well just grab these with 'mv' to simplify things later:
mv $PKG/usr/lib${LIBSUFFIX}/debug usr/lib${LIBSUFFIX}
mkdir install
install -m 644 -o root -g root $CWD/slack-desc.glibc-debug install/slack-desc
makepkg -l y -c n $TMP/glibc-debug-$VERSION-$PKGARCH-$BUILD.tgz
## INSTEAD, NUKE THESE LIBS
#rm -rf $PKG/usr/lib/debug

# glibc-i18n:
cd $PI18N
mkdir -p usr/lib${LIBSUFFIX}
rm -rf usr/lib${LIBSUFFIX}/locale
cp -a $PKG/usr/lib${LIBSUFFIX}/locale usr/lib${LIBSUFFIX}
mkdir -p usr/share
cp -a $PKG/usr/share/i18n usr/share
cp -a $PKG/usr/share/locale usr/share
mkdir install
install -m 644 -o root -g root $CWD/slack-desc.glibc-i18n install/slack-desc
makepkg -l y -c n $TMP/glibc-i18n-$VERSION-$PKGNOARCH-$BUILD.tgz

# glibc-solibs:
cd $PSOLIBS
mkdir -p etc/profile.d
cp -a $CWD/profile.d/* etc/profile.d
chown -R root:root etc
chmod 755 etc/profile.d/*
mkdir -p lib${LIBSUFFIX}
cp -a $PKG/lib${LIBSUFFIX}/* lib${LIBSUFFIX}
( cd lib${LIBSUFFIX}
  mkdir incoming
  mv *so* incoming
  mv incoming/libSegFault.so .
)
mkdir -p usr
cp -a $PKG/usr/bin usr
mv usr/bin/ldd .
rm usr/bin/*
mv ldd usr/bin
mkdir -p usr/lib${LIBSUFFIX}
# The gconv directory has a lot of stuff, but including it here will save some problems.
# Seems standard elsewhere.
cp -a $PKG/usr/lib${LIBSUFFIX}/gconv usr/lib${LIBSUFFIX}
# Another manpage abandoned by GNU...
#mkdir -p usr/man/man1
#cp -a $PKG/usr/man/man1/ldd.1.gz usr/man/man1
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
install -m 644 -o root -g root $CWD/slack-desc.glibc-solibs install/slack-desc
install -m 755 -o root -g root $CWD/doinst.sh-glibc-solibs install/doinst.sh
fix_doinst
# Ditch links:
find . -type l -exec rm {} \;
# Build the package:
makepkg -l y -c n $TMP/glibc-solibs-$VERSION-$PKGARCH-$BUILD.tgz

if [ "x$LIBSUFFIX" == "x64" ]; then
	# Grab out the 32-bit i18n stuff
	mkdir -p $PI18N32/usr/lib
	cd $PI18N32
	mv $PKG/usr/lib/locale usr/lib
	mkdir install
	cat $CWD/slack-desc.glibc32-i18n > install/slack-desc
	makepkg -l y -c n $TMP/glibc32-i18n-$VERSION-$PKGARCH-$BUILD.tgz

	# Grab out the 32-bit libraries
	mkdir -p $PGLIBC32/usr
	cd $PGLIBC32
	mv $PKG/usr/lib usr/lib
	mv $PKG/lib lib
	# Strip them
	find -type f | xargs file | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded
	mkdir install
	cat $CWD/slack-desc.glibc32 > install/slack-desc
	makepkg -l y -c n $TMP/glibc32-$VERSION-$PKGARCH-$BUILD.tgz
fi

# And finally, the complete "all-in-one" glibc package is created
# from whatever was leftover:
cd $PGLIBC
mv $PKG/* .
mkdir -p etc/profile.d
cp -a $CWD/profile.d/* etc/profile.d
chown -R root:root etc
chmod 755 etc/profile.d/*
# Ditch links (these are in doinst.sh-glibc):
find . -type l -exec rm {} \;
mkdir install
install -m 644 -o root -g root $CWD/slack-desc.glibc install/slack-desc
install -m 755 -o root -g root $CWD/doinst.sh-glibc install/doinst.sh
fix_doinst
( cd lib${LIBSUFFIX}
  mkdir incoming
  mv *so* incoming
  mv incoming/libSegFault.so .
)

# Build the package:
makepkg -l y -c n $TMP/glibc-$VERSION-$PKGARCH-$BUILD.tgz

# Done!
echo
echo "glibc packages built in $TMP!"