Bug 108976 – Enable --as-needed for glibc builds.

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Simon Strandman 2005-10-12 01:32:44 UTC]

--as-needed is disabled for glibc since the early 2.3.4 ebuilds over a year ago
but it doesn't seem nessecary anymore. A glibc build with --as-needed enabled
has no problems boostraping on x86 and amd64 and likely other arches too.
Perhaps this can be reconsidered?

[Comment 1 Simon Strandman 2005-10-12 01:49:46 UTC]

Created attachment 70444 [details, diff]
Ebuild patch

[Comment 2 Ryan Hill (RETIRED) 2005-10-14 22:49:29 UTC]

just wanted to add my non-technical 'me too'. ;p  i've been running various
versions of glibc 2.3.5 w/ binutils 2.16 with --as-needed enabled since around
March, and have yet to hit any issues with it.

Portage 2.0.53_rc5 (default-linux/x86/2005.1, gcc-4.0.3-beta20051013,
glibc-2.3.5.20050722-r0, 2.6.13-ck8 i686)
=================================================================
System uname: 2.6.13-ck8 i686 Mobile Intel(R) Pentium(R) 4 CPU 3.06GHz
Gentoo Base System version 1.12.0_pre9
ccache version 2.4 [enabled]
dev-lang/python:     2.4.2
sys-apps/sandbox:    1.2.13
sys-devel/autoconf:  2.13, 2.59-r7
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1, 2.16.91.0.3
sys-devel/libtool:   1.5.20
virtual/os-headers:  2.6.11-r2
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=prescott -fomit-frame-pointer -pipe -fno-ident"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env
/usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/3/share/config
/usr/lib/X11/xkb /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -march=prescott -fomit-frame-pointer -pipe -fno-ident
-fvisibility-inlines-hidden"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks sandbox sfperms"
GENTOO_MIRRORS="http://gentoo.chem.wisc.edu/gentoo/"
LDFLAGS="-Wl,-O1"
LINGUAS="en"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/home/dirtyepic/overlay /home/dirtyepic/gentopia"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="x86 X aac acpi alsa avi bash-completion berkdb bzip2 cdr crypt curl dbus
dts dvd dvdr dvdread exif ffmpeg firefox flac gdbm gif gnutls gphoto2 gtk gtk2
hal imagemagick imlib java jpeg kde mad mmap mmx mng motif mp3 mpeg mpi ncurses
nntp nptl nsplugin ogg oggvorbis opengl pcmcia perl pic png python qt quicktime
readline ruby sdl sqlite sse sse2 ssl svg tcpd threads tiff truetype usb vcd
vorbis wifi win32codecs xml xml2 xv xvid zlib linguas_en userland_GNU
kernel_linux elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL

[Comment 3 SpanKY 2005-10-16 04:12:57 UTC]

might as well enable as-needed for gcc-3.4.4+ too

[Comment 4 Ryan Hill (RETIRED) 2005-10-22 23:21:45 UTC]

FYI i've patched toolchain.eclass and glibc-2.3.5.20050722.ebuild to use
--as-needed and rebuilt world with gcc-3.4.4 with no compile or runtime issues
whatsoever.

[Comment 5 SpanKY 2005-10-26 18:07:29 UTC]

fixed in glibc-2.3.5-r3

[Comment 6 Sebastian Bergmann (RETIRED) 2005-10-26 23:27:48 UTC]

While I am building glibc-2.3.5-r3 I see -Wl,--as-needed -Wl,--no-as-needed. Do
these not cancel each other out?