[Valgrind-developers] Runtime NPTL detection

[Enrico S. <enr...@in...>]

Hello,

I am packaging valgrind for Fedora Linux (http://www.fedora.us/) which
targets the NPTL enabled Red Hat Linux 9. The build-process itself is
done in vservers which are having a RHL9 userspace-environment but not
an NPTL kernel.

Therefore, ./configure will not detect NPTL and this result is statically
compiled into the 'valgrind' wrapper-script. But on final user-machines,
NPTL might be available and valgrind fails.

AFAIS, the NPTL detection affects only the

| nptl_threading="@NPTL_THREADING@" 

substitution in 'coregrind/valgrind.in'. In my Fedora packages I have
replaced this assignment with

| nptl_threading="`$VALGRIND/nptltest`" 

where 'nptltest' is doing the test which will be done in ./configure
also.

Is this method ok, or are there other places which are affected by the
NTPL test?




Enrico