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Re: 2.2.7a: unresolved external symbol _lt_libltdlc_LTX_preloaded_symbol

From: Akim Demaille
Subject: Re: 2.2.7a: unresolved external symbol _lt_libltdlc_LTX_preloaded_symbols
Date: Thu, 27 Nov 2008 15:48:25 +0100

Le 26 nov. 08 à 07:36, Ralf Wildenhues a écrit :

Report back if there are still problems.

Well, I'm trying to have the libtool test suite pass on this platform (ie., GNU/Linux running VC++ on top of Wine). There are a number of things that don't work cleanly, and maybe we should go step by step. I need the changes Paolo posted.

First of all, it is my understanding (from what told my Matthieu) that VC++ will not make dynamic libraries (*.lib) in addition to dlopen- modules (*.dll) unless there are dllexport requests. And the test suite does not seem to do that, which results in total failure. The following patch in the test suite fixes this. I am surprised that this issue was not reported before, did I miss something?

The test (make -C mdemo) fails a bit farther anyway:

/bin/sh ./libtool --tag=CC --mode=link cl.exe -g -no-undefined - module -export-symbols-regex "libfoo2.*" -o libfoo2.la -rpath /tmp/ libtool-2.2.7a/_inst/lib foo2.lo libsub.la libtool: link: link -dump -symbols .libs/foo2.obj | | /bin/sed 's/.* //' | sort | uniq > .libs/libfoo2.exp
./libtool: eval: line 967: syntax error near unexpected token `|'
./libtool: eval: line 967: `link -dump -symbols .libs/foo2.obj | | /bin/sed 's/.* //' | sort | uniq > .libs/libfoo2.exp'
gmake: *** [libfoo2.la] Error 1

That's because I have:

# Take the output of nm and produce a listing of raw symbols and C names.

# Transform the output of nm in a proper C declaration.
# The commands to list exported symbols.
export_symbols_cmds="\$NM \$libobjs \$convenience | \ $global_symbol_pipe | \$SED 's/.* //' | sort | uniq > \$export_symbols"

I suppose this is computed at configure time. A check that the value is sensible before continuing would probably help here. Will try to track this down later.


(this is master)

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