Jake Grimmett a écrit : > Pierre, many thanks for your help. > > I think I might need a compat-glibc for the "n-2 distro" as linuxthreads > support was removed from Centos5; from the RHEL-4 release-notes: > > "support for LinuxThreads still exists for RHEL 4, ...advance notice that Red > Hat Enterprise Linux 5 will no longer include support for LinuxThreads. Thus > applications that require LinuxThreads support must be updated before they > will be able to work properly on a Red Hat Enterprise Linux 5 system." > > In RHEL4 the solution was to one of the following: > 1) Use LD_ASSUME_KERNEL environment variable > or > 2) Use an explicit rpath to /lib/i686/ or /lib/ to select LinuxThreads instead > of NPTL at runtime > > I used solution #1 to get InsightII to run under Centos4. > Is there any (reasonable) chance of providing older (=Centos3) libraries under > Centos5 for one errant program? Along with the virtualization solution, you could try to play with the compat-* packages from ce4 : try to install them directly on ce5. It may hurt on runtime, because the library loader of ce5 can be incompatible with its package objects (.so, binaries) ? In this case, you can try to rebuild compat-*-ce4 package(s) from source (SRPM) on a CentOS-5 ... In both cases, you will have to deal closely with gcc $LD_LIBRARY_PATH and so one ... I don't know how compat* packages are build, esp. with which version of gcc, but everything should be written (explained ?) in .spec file ? If a RPM packager expert on compat* packages has some clues, it will be nice ... Pierre