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Re: Linking problems with mutex and zsyrk_


From: Daniel J Sebald
Subject: Re: Linking problems with mutex and zsyrk_
Date: Sat, 25 Oct 2008 19:15:10 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20041020

Daniel J Sebald wrote:
I've been compiling recent versions of Octave on openSUSE 10.3. (openSUSE has a pre-3.0 version, 2.9.12, that doesn't load version 7 mat files, or even handle the load/save options all that well.) I've tried the latest stable release (3.0.3), and that compiles fine. I've also tried the latest mercurial source, and that fails at link time with undefined library references:

pthread_mutexattr_init
pthread_mutexattr_settype
pthread_mutexattr_destroy
zsyrk_

What I notice about the mutex class functions is that they are declared as a class member function in the file oct-mutex.cc, but nowhere do they actually appear to be defined.

What the issue is with zsyrk_ from CMatrix.cc I'm not sure.

The link in the /src directory is successful if I add -lpthread and -lblas to 
the list of libraries.  (The link command between the source control code and 
3.0.3 looks pretty much the same, i.e., no library has been lost along the 
way.)  So it is one of two things:

1) Some code is included that should be conditioned out with a preprocessor 
statement.

2) A library hasn't been added that should be added.

In the case of the mutex code I might guess 2, that the -lpthread needs to be 
added to the list of libraries somewhere.  For the zsyrk_ I would guess 1, 
because there are a lot of blas functions and I find it hard to believe that 
zsyrk_ is the only one used in the circumstance that the blas library is used.

Dan


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