How to rebuild glibc on older gcc & kernel?

Question

My env (these are dummy package with STLinux's prebuild binaries)
binutils 2.18.50.0.8-43
gcc 4.2.4-76
gcc-libs 4.2.4-76
glibc 2.6.1-74
linux-api-headers 2.6.23.17-1
I'm using old kernel on sh4 CPU arch and want to upgrade to newest gcc. So, I changed the glibc's PKGBUILD as
# toolchain build order: linux-api-headers->glibc->binutils->gcc->binutils->glibc
# NOTE: valgrind requires rebuilt with each major glibc version
pkgname=glibc
pkgver=2.17
pkgrel=3
pkgdesc="GNU C Library"
arch=('i686' 'x86_64' 'sh4')
url="http://www.gnu.org/software/libc"
license=('GPL' 'LGPL')
groups=('base')
depends=('linux-api-headers' 'tzdata' 'filesystem')
makedepends=('gcc')
backup=(etc/gai.conf
etc/locale.gen
etc/nscd.conf)
options=('!strip')
install=glibc.install
source=(http://ftp.gnu.org/gnu/libc/${pkgname}-${pkgver}.tar.xz{,.sig}
glibc-2.17-sync-with-linux37.patch
nscd.service
nscd.tmpfiles
locale.gen.txt
locale-gen)
md5sums=('87bf675c8ee523ebda4803e8e1cec638'
'6db4d1661cf34282755dc90330465f6d'
'fb99380d94598cc76d793deebf630022'
'c1e07c0bec0fe89791bfd9d13fc85edf'
'bccbe5619e75cf1d97312ec3681c605c'
'07ac979b6ab5eeb778d55f041529d623'
'476e9113489f93b348b21e144b6a8fcf')
build() {
cd ${srcdir}/${pkgname}-${pkgver}
# combination of upstream commits 318cd0b, b540704 and fc1abbe
#patch -p1 -i ${srcdir}/glibc-2.17-sync-with-linux37.patch
cd ${srcdir}
mkdir -p glibc-build
cd glibc-build
if [[ ${CARCH} = "i686" ]]; then
# Hack to fix NPTL issues with Xen, only required on 32bit platforms
# TODO: make separate glibc-xen package for i686
export CFLAGS="${CFLAGS} -mno-tls-direct-seg-refs"
fi
echo "slibdir=/usr/lib" >> configparms
# remove hardening options from CFLAGS for building libraries
CFLAGS=${CFLAGS/-fstack-protector/}
CFLAGS=${CFLAGS/-D_FORTIFY_SOURCE=2/}
${srcdir}/${pkgname}-${pkgver}/configure --prefix=/usr \
--libdir=/usr/lib --libexecdir=/usr/lib \
--with-headers=/usr/include \
--with-bugurl=https://bugs.archlinux.org/ \
--enable-add-ons=nptl,libidn \
--enable-obsolete-rpc \
--enable-kernel=2.6.23 \
--enable-bind-now --disable-profile \
--enable-stackguard-randomization \
--disable-multi-arch
# build libraries with hardening disabled
echo "build-programs=no" >> configparms
make
# re-enable hardening for programs
sed -i "/build-programs=/s#no#yes#" configparms
echo "CC += -fstack-protector -D_FORTIFY_SOURCE=2" >> configparms
echo "CXX += -fstack-protector -D_FORTIFY_SOURCE=2" >> configparms
make
# remove harding in preparation to run test-suite
sed -i '2,4d' configparms
check() {
# bug to file - the linker commands need to be reordered
LDFLAGS=${LDFLAGS/--as-needed,/}
cd ${srcdir}/glibc-build
make check
package() {
cd ${srcdir}/glibc-build
install -dm755 ${pkgdir}/etc
touch ${pkgdir}/etc/ld.so.conf
make install_root=${pkgdir} install
rm -f ${pkgdir}/etc/ld.so.{cache,conf}
install -dm755 ${pkgdir}/usr/lib/{locale,systemd/system,tmpfiles.d}
install -m644 ${srcdir}/${pkgname}-${pkgver}/nscd/nscd.conf ${pkgdir}/etc/nscd.conf
install -m644 ${srcdir}/nscd.service ${pkgdir}/usr/lib/systemd/system
install -m644 ${srcdir}/nscd.tmpfiles ${pkgdir}/usr/lib/tmpfiles.d/nscd.conf
install -m644 ${srcdir}/${pkgname}-${pkgver}/posix/gai.conf ${pkgdir}/etc/gai.conf
install -m755 ${srcdir}/locale-gen ${pkgdir}/usr/bin
# temporary symlink
ln -s ../../sbin/ldconfig ${pkgdir}/usr/bin/ldconfig
# create /etc/locale.gen
install -m644 ${srcdir}/locale.gen.txt ${pkgdir}/etc/locale.gen
sed -e '1,3d' -e 's|/| |g' -e 's|\\| |g' -e 's|^|#|g' \
${srcdir}/glibc-${pkgver}/localedata/SUPPORTED >> ${pkgdir}/etc/locale.gen
# Do not strip the following files for improved debugging support
# ("improved" as in not breaking gdb and valgrind...):
# ld-${pkgver}.so
# libc-${pkgver}.so
# libpthread-${pkgver}.so
# libthread_db-1.0.so
cd $pkgdir
strip $STRIP_BINARIES sbin/{ldconfig,sln} \
usr/bin/{gencat,getconf,getent,iconv,locale,localedef} \
usr/bin/{makedb,pcprofiledump,pldd,rpcgen,sprof} \
usr/lib/getconf/* \
usr/sbin/{iconvconfig,nscd}
[[ $CARCH = "i686" ]] && strip $STRIP_BINARIES usr/bin/lddlibc4
strip $STRIP_STATIC usr/lib/*.a
strip $STRIP_SHARED usr/lib/{libanl,libBrokenLocale,libcidn,libcrypt}-*.so \
usr/lib/libnss_{compat,db,dns,files,hesiod,nis,nisplus}-*.so \
usr/lib/{libdl,libm,libnsl,libresolv,librt,libutil}-*.so \
usr/lib/{libmemusage,libpcprofile,libSegFault}.so \
usr/lib/{pt_chown,{audit,gconv}/*.so}
checking for autoconf... autoconf
checking whether autoconf works... no
configure: error:
*** These critical programs are missing or too old: as ld gcc
*** Check the INSTALL file for required versions.
==> ERROR: A failure occurred in build().
Aborting...

Answer 1

a *very* quick guide
you can change the details to suit your environment
# = run as root
$ = run as regular user
# pacman -S abs
# abs
$ mkdir -p ~/abs/core/glibc
$ cp -R /var/abs/core/glibc ~/abs/core/glibc
$ cd ~/abs/core/glibc
$ vi PKGBUILD
modify the --enable-kernel line so it reads 2.6.18
$ makepkg
# pacman -U <your new glibc package>.xv
You might also want to add glibc to the ignorepkg line in pacman.conf.  That way, you'll just be notified when a new version is out and you can repeat all of this.  You don't need to resync the entire abs tree though, the following command will do it for one package
# abs core/glibc
One other tip - make sure you have a copy of the regular glibc package before making any changes just to be safe
Last edited by oliver (2011-03-02 21:17:24)