Hi Michael, On Mon, Jul 15, 2013 at 01:52:56PM +0200, Michael Kerrisk (man-pages) wrote: > On Sun, Apr 29, 2012 at 7:42 PM, Simon Paillard <spaill...@debian.org> wrote: > > (but no more LD_ASSUME_KERNEL). > > I just drafted the following for ld.so.8 in man-pages: > > LD_ASSUME_KERNEL > (glibc since 2.2.3) Each shared library can inform the > dynamic linker of the minimum kernel ABI version that it > requires. (This requirement is encoded in an ELF note > section that is typically named .note.ABI-tag.) At run > time, the dynamic linker determines the ABI version of > the running kernel and will reject loading shared > libraries that specify minimum ABI versions that exceed > that ABI version. > > LD_ASSUME_KERNEL can be used to cause the dynamic linker > to assume that it is running on a system with a differ‐ > ent kernel ABI version. For example, the following com‐ > mand line causes the dynamic linker to assume it is run‐ > ning on Linux 2.2.5 when loading the shared libraries > required by myprog: > > $ LD_ASSUME_KERNEL=2.2.5 ./myprog > > On systems that provide multiple versions of a shared > library (in different directories in the search path) > that have different minimum kernel ABI version require‐ > ments, LD_ASSUME_KERNEL can be used to select the ver‐ > sion of the library that is used (dependent on the > directory search order). Historically, the most common > use of the LD_ASSUME_KERNEL feature was to manually > select the older LinuxThreads POSIX threads implementa‐ > tion on systems that provided both LinuxThreads and NPTL > (which latter was typically the default on such sys‐ > tems). > > Look okay?
Looks ok, interesting information mentioned by http://people.redhat.com/alikins/troubleshooting/ are actual values to be used when switching to NPTL or olf LinuxThreads. LD_ASSUME_KERNEL happens to be documented a bit in pthreads(7) too. -- Simon Paillard -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
