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Re: [Discuss-gnuradio] Re: mblock make failure under Cygwin

From: Don Ward
Subject: Re: [Discuss-gnuradio] Re: mblock make failure under Cygwin
Date: Thu, 29 May 2008 17:47:32 -0400

Eric Blossom wrote:

.libs/qa_inband_usrp_server.o: In function
undefined reference to `mb_mblock::~mb_mblock()'

It looks like you are missing a patch (attachment:"makefiles6975.patch,
listed on the Cywin wiki page) needed to include the mblock library in the
link of qa_inband_usrp_server.

-- Don W.

Thanks Don.

FYI, we haven't applied this patch to the trunk because the real
problem is with libtool under cygwin.  The patch replicates
information (always a bad idea) that libtool already knows on all
other systems.

Good news: libtool 2.2.2 is now available on Cygwin and seems to handle the interlibrary dependencies.

Bad news: (a) using the new libtool requires running bootstrap (to get new ltmain.sh, libtool.m4, ...?), so it still requires a patch (to add bootstrap) to work with the current release; and (b) autoconf (and/or libtoolize?) produce a number of warnings, such as "LT_OUTPUT was called before LT_LANG". (I think there are some compatibility issues, but I haven't found any simple documentation on them yet.)

Unknowns: I don't know if libtool 2.x runs on MinGW, and I haven't tried it on Debian (to see if it gets the same warning messages).

-- Don W.

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