On Thursday 03 March 2005 6:10 pm, Dimych wrote:

--- Jerry Feldman <gaf@blu.org> wrote:

...

Is there any definitive way that a threaded app can detect which thread library it is using, the older Linux Threads or the newer Native POSIX Thread Library. I have found a few functions, such as pthread_tryjoin_np(), that exist only in NPTL, but that will prevent a program from linking with the Linux Threads library.

Why do not you just use #ifdefs and specify what library to use as a build parameter? That's not my point. I was looking for a run-time check.

When building with NPTL, I set CFLAGS=-pthread -I/usr/include/nptl -L/usr/lib/nptl This points the build at the correct library and header file. Also, I posted this originally to suse-programming-e. -- Jerry Feldman <gaf@blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9