OK, we now have thread compile failure reports on Debian and Slackware.
The config/acx_pthread.m4 script basically tests these:
acx_pthread_flags=3D"pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" =09 in that order and exits once it finds the first one that can compile/link this:
AC_TRY_LINK([#include <pthread.h>], [pthread_t th; pthread_join(th, 0); pthread_attr_init(0); pthread_cleanup_push(0, 0); pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], [acx_pthread_ok=3Dyes])
Now, the big question is why -pthread can compile/link this successfully but -pthread isn't enough to build a library that uses threads.
I suspect that on Solaris, without "-lpthread" the pthread-stubs in /usr/lib/libc.so might be called at runtime instead of the functional ones in libpthread.so.
Could this easily be checked?
Martin
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