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Re: How to check the size of pthread_t?

From: Ralf Wildenhues
Subject: Re: How to check the size of pthread_t?
Date: Fri, 27 Feb 2009 18:25:23 +0100
User-agent: Mutt/1.5.17+20080114 (2008-01-14)

Hello Vasil,

* Vasil Dimov wrote on Fri, Feb 27, 2009 at 07:47:49AM CET:
> I am trying to create an autoconf script that does check the size of 
> pthread_t,
> but I am experiencing some troubles in the way.
> To be precise, what I need is a macro like SIZEOF_PTHREAD_T, similar to
> SIZEOF_LONG. The problem is that pthread.h must be included in the test 
> program
> and it must be linked with the OS-dependent -pthread or -lpthread or
> whatever flag
> the OS is using to link against the POSIX threads library.
> Can anyone send me a quick snippet of autoconf magic how to achieve this?

Completely untested: grab the ACX_PTHREAD macro from the Autoconf Macro
Archive, then use something like this:

  AC_CHECK_SIZEOF([pthread_t], [],
    #include <pthread.h>

If you don't want LIBS, CFLAGS, and CC mangled, then save and restore
their values before resp. afterwards.

Hope that helps (otherwise please report back).


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