Bugzilla Bug 198657

I wanted to enable the old glibc libraries, because matlab does not like newer
glibc. In order to make matlab (symbolic toolbox) work, I need a
LD_ASSUME_KERNEL=2.4.1.

When installing glibc-2.6.1 with compat useflag enabled, I am not getting any
compat-libraries besides libnss-compat. However, I need libdl, libc etc which
are compatible with LD_ASSUME_KERNEL=2.4.1. When starting matlab with LD_ASS...
set I get an error 
that libdl is not found

I grepped the ebuild for 2.6.1 and noted, that the if statement present in the
2.6 ebuild is gone in 2.6.1... has support been removed? 

io lib # eu-readelf -n /lib/libdl.so.2

Note segment of 32 bytes at offset 0x154:
  Owner          Data size  Type
  GNU                   16  VERSION
    OS: Linux, ABI: 2.6.9

This clearly is not compatible with LD_ASSUME_KERNEL=2.4.1 :)


Reproducible: Always




io lib # emerge --info
Portage 2.1.3.19 (default-linux/x86, gcc-4.1.2, glibc-2.6.1-r0, 2.6.21.1 i686)
=================================================================
System uname: 2.6.21.1 i686 Intel(R) Pentium(R) M processor 1.70GHz
Timestamp of tree: Fri, 09 Nov 2007 08:00:01 +0000
ccache version 2.4 [disabled]
app-shells/bash:     3.2_p17
dev-java/java-config: 1.3.7, 2.0.33-r1
dev-lang/python:     2.4.4-r6
dev-python/pycrypto: 2.0.1-r6
dev-util/ccache:     2.4-r7
dev-util/confcache:  0.4.2-r1
sys-apps/baselayout: 1.12.10-r5
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r1
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.3.16
sys-devel/libtool:   1.5.24
virtual/os-headers:  2.6.22-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=pentium-m -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf
/etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo
/etc/texmf/web2c /etc/udev/rules.d"
CXXFLAGS="-O2 -pipe -march=pentium-m -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="confcache cvs distlocks metadata-transfer parallel-fetch sandbox
sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org
http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LANG="en_US.UTF-8"
LC_ALL="de_CH.UTF-8"
LINGUAS="en"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages
--filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac accessibility acl acpi aiglx alsa asf bash-completion beagle
berkdb bitmap-fonts bluetooth bzip2 cdparanoia cisco cli cracklib crypt curl
dbus divx4linux dri dvd dvdread encode ethereal exif fam fortran gif gimpprint
glitz gphoto2 graphviz gtk2 hal history iconv isdnlog java jpeg kde ldap mad
madwifi mailwrapper mbox midi mmx mono mp3 mpeg mudflap nautilus ncurses nls
nptl nptlonly nsplugin ogg opengl openmp pam pch pcre pdf perl png pppd python
qt3 qt3support qt4 readline reflection sdl session spell spl sse sse2 ssl svg
tcpd theora tiff truetype truetype-fonts type1-fonts unicode usb vorbis
win32codecs x86 xml xorg xosd xv xvid zeroconf zlib" ALSA_CARDS="intel8x0
intel8x0m" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty
extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null
plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="mouse synaptics
keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216
lcdm001 mtxorb ncurses text" LINGUAS="en" USERLAND="GNU" VIDEO_CARDS="fglrx
radeon"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS,
MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

*** This bug has been marked as a duplicate of bug 149581 ***

Not that one...

*** This bug has been marked as a duplicate of bug 183190 ***