Boost C++ Libraries: Ticket #1058: Cygwin libraries & GNU libtool

component changed

René Rivera — Wed, 11 Jul 2007 01:25:35 GMT

component Building Boost → build

owner set

René Rivera — Wed, 11 Jul 2007 01:26:13 GMT

owner set to Vladimir Prus

Vladimir Prus — Wed, 11 Jul 2007 18:29:28 GMT

Let me clarify. Are you saying that in 1.33.1, import libraries on cygwin were named libboost_XXX.dll.a, and in 1.34 they are named boost_XXX.dll.a, and that, in particular, confuses libtool?

anonymous — Tue, 17 Jul 2007 00:55:15 GMT

Yes.

Since the *.dll.a files do not have a "lib" prefix, libtool in cygwin does not recognize them and will only link with the static libs. This is especially a problem if you're trying to use libtool to build a DLL that is linked with the boost DLLs.

It could be a problem with libtool or just me not knowing about certain options I should be passing to it (I'm fairly new to autotools), but in 1.33.1 the libraries had a "lib" prefix and therefore this was not a problem.

Thanks, -Mike

type, severity changed

Roland Schwarz — Sun, 02 Sep 2007 15:52:42 GMT

type Bugs → Support Requests
severity Regression → Problem

We need more input.

The following code snippet, is not able to reproduce the described behavior, although not the first hint of a library being present. Try this (in an empty dir):

libtool --mode=link g++ -no-undefined -o libbaz.la -L. -lfoobar

On the other hand I verified, that the gnu linker ld is able to accept xxx.dll.a or libxxx.dll.a as import libraries.

I am pretty sure libtool also will find xxx.lib named import libraries.

I guess the reported bug is not related to boost naming scheme at all, but this is just a guess. It would be ideal if the described behavior would be presented in a stripped down version, since we have no access to the posters prerequisites (i.e pion libs)

Roland aka speedsnail

Mike — Tue, 04 Sep 2007 20:52:07 GMT

The problem is not the SUFFIX but the PREFIX. In 1.33.x, the libraries included the prefix "lib". In 1.34.0 this prefix was removed. Without the "lib" prefix (i.e. "boost_thread_" versus "libboost_thread_"), libtool cannot seem to find the library.

anonymous — Tue, 04 Sep 2007 21:36:48 GMT

There were actually two versions:

1) libxxx.lib and 2) xxx.lib

1) is the static version and 2) is the import lib for the DLL. This scheme has been restored on trunk. Could you please check if this works with the trunk version? If yes this can be merged back as a bug-fix for 1.34.

Thank you.

Mike — Wed, 05 Sep 2007 01:34:36 GMT

I just confirmed that the latest code in trunk (1.35) works great with libtool again. Thanks! -Mike

P.S. the project I was referring to (libpion) is open source code at http://www.atomiclabs.com/libpion/ just in case anyone else needs to test.

status changed; resolution set

Roland Schwarz — Fri, 07 Sep 2007 10:54:45 GMT

status new → closed
resolution → fixed