Hi again,
Both `AC_CHECK_LIB' and `AC_CHECK_FUNC' check whether a *symbol* can be found in the given library (or in one of `$LIBS'). However, on Tru64 UNIX 5.1 (aka. Digital UNIX, OSF1, ...) <pthread.h> does the following:
#define pthread_create __pthread_create
Note that pthreads are generally quite painful to detect properly on a wide variety of systems, since there is wide variety in flags etc.; you might want to use my ACX_PTHREAD macro at the autoconf macro repository.
Steven
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