Bug#279423: libc6-dev: totally incoherent pthread related includes files for dynamic linking
Package: libc6-dev
Version: 2.3.2.ds1-18
Severity: grave
Due implementaion decisions made to have NPTL threads availiable when
possible, the actual status of libc6-dev is almost incoherent :
1) The includes related to pthread (pthread.h, semaphores.h, bits/*.h)
are the one that belong to linuxThread includes not nptl ones,
2) When linking in dynamic mode, nptl implementation is dynamically
chosen while the includes that have been used to compile the program
arethe linuxThread ones,
3) When linking in static mode, linuxThread implementation is chosen
and not NPTL one (wonder why on i386 and PPC at least),
4) There is no way to get NPTL threading using static linking mode.
This makes programme behaves differently when using static and
dynamic linking,
To clean up the mess, I think that :
1) When possible, the same thread implementation should be chosen
in dynamic and static mode. Most distrib indeed provide a nptl-dev
package for dynamic and static nptl thread usage,
2) As default linking is dynamic, default includes should be the
NPTL ones and not the linuxThreads ones,
3) If someone find a reason to not use NPTL in static mode, then
a diffrent package for static linuxThread code should be availiable
I would also like to recall that static linking when optimal/soft RT
performance are required is something still very usefull as mlockall and
dynamic libraries do waste so much physical memory (e.g 70 Mb VmSize vs 10 Mb).
-- System Information:
Debian Release: 3.1
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.10-rc1-bk6
Locale: LANG=en_IE@euro, LC_CTYPE=en_IE (charmap=ISO-8859-15) (ignored: LC_ALL set to en_IE@euro)
Versions of packages libc6-dev depends on:
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an
ii linux-kernel-headers 2.5.999-test7-bk-17 Linux Kernel Headers for developme
-- no debconf information
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