??,?: Yet a question about g++/STL/multithreading

[PeterPan]

Alexandre Oliva:
        thank you very much!! 
        --enable-threads and -pthreads not recognized, but  -D_PTHREADS worked. 
        it seems that the document never mentioned it. 
        I found some .mt files in libstdc++/config that defined these macroes, 
        is there any flags of gcc/g++ to use them directly?(-pthreads not works)
                                                        yours, Xuesong Guo



peterpan@mailsrv0 ~$ g++ -v
Reading specs from 
/export/home/peterpan/lib/gcc-lib/i386-pc-solaris2.8/2.95.2/specs
gcc version 2.95.2 19991024 (release)
peterpan@mailsrv0 ~$ g++ -D_REENTRANT -lpthread -Wall --enable-threads 
-D_PTHREADS -pthreads t.cc
g++: unrecognized option `-pthreads'
cc1plus: Invalid option `-fenable-threads'

-----????-----
???: help-gplusplus-admin@gnu.org [mailto:help-gplusplus-admin@gnu.org]?? 
Alexandre Oliva
????: 2001?4?26? 2:49
???: PeterPan
??: help-gplusplus@gnu.org; gcc-bugs@gcc.gnu.org
??: Re: Yet a question about g++/STL/multithreading


On Apr 25, 2001, "PeterPan" <peterpan@chinaren-inc.com> wrote:

> I've been using g++ to compile a multithreading program on
> Solaris x86, and my program crashed when I run it.

You don't mention having built GCC with --enable-threads anywhere.
Did you forget to do that?

You may need to #define _PTHREADS too, so that MT-safe allocators are
used, since I see you're not using the -pthreads flag, that implicitly
defines it.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

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