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From: Sebastian Wilhelmi <wilhelmi@ira.uka.de> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: other/8888: Linking shared libraries with -pthread fails to link to libpthread Date: Tue, 10 Dec 2002 06:36:00 -0000 [thread overview] Message-ID: <20021210143604.13224.qmail@sources.redhat.com> (raw) The following reply was made to PR other/8888; it has been noted by GNATS. From: Sebastian Wilhelmi <wilhelmi@ira.uka.de> To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-gnats@gcc.gnu.org Cc: Subject: Re: other/8888: Linking shared libraries with -pthread fails to link to libpthread Date: 10 Dec 2002 15:31:02 +0100 Hi, > Synopsis: Linking shared libraries with -pthread fails to link to libpthread > > State-Changed-From-To: open->feedback > State-Changed-By: bangerth > State-Changed-When: Tue Dec 10 06:13:52 2002 > State-Changed-Why: > I fail to see the reasoning behind the report: what is wrong > with passing -lpthread to the linker line? The -pthread > changes some things when compiling (as far as I understand, > for example the initialization of static variables), so > has nothing to do with what libraries are linked. You > would want to specify this separately. Why is this bad? > > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8888 the man page for gcc-3.2 says: -pthread Adds support for multithreading with the pthreads library. This option sets flags for both the preprocessor and linker. So we consider -pthread in GLib the preferred way to indicate, that a program or library is multithreaded. We use it both for linking and compiling programs and libraries. I got the impression, that also gcc consideres using -pthread superior to using -D_REENTRANT and -lpthread. Also for non-shared binaries gcc does the right thing now, but not for shared objects, why is that? Bye, Sebastian P.S.: I have no write access to GNATS, so I could only write this e-mail, or is there some way to attach that message to the bug report? -- Sebastian Wilhelmi mailto:wilhelmi@ira.uka.de http://goethe.ira.uka.de/~wilhelmi
next reply other threads:[~2002-12-10 14:36 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-12-10 6:36 Sebastian Wilhelmi [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-03-10 20:39 bangerth 2003-03-09 17:36 Hans-Peter Nilsson 2002-12-10 11:46 Wolfgang Bangerth 2002-12-10 11:46 Joseph S. Myers 2002-12-10 11:40 bangerth 2002-12-10 11:36 Wolfgang Bangerth 2002-12-10 11:06 Joseph S. Myers 2002-12-10 6:48 bangerth 2002-12-10 6:46 Wolfgang Bangerth 2002-12-10 6:13 bangerth 2002-12-10 4:16 wilhelmi
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