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Re: Libtool 1.5.8 problems on OSX: ${wl} evaluation [#9382]

From: George Feinberg
Subject: Re: Libtool 1.5.8 problems on OSX: ${wl} evaluation [#9382]
Date: Wed, 13 Oct 2004 09:42:33 -0400

On Oct 13, 2004, at 3:35 AM, Gary V. Vaughan wrote:

Don, George: On what release of OS X did you find this bug? What value of MACOSX_DEPLOYMENT_TARGET (if any) was set in the environment?

I'm running 10.3 on a PowerBook G4.
If I have no MACOSX_DEPLOYMENT_TARGET set, and run configure without
any additional flags (e.g. TWO_LEVEL_NAMESPACE, or whatever it used to take), it fails. The behavior and output is identical if I set MACOSX_DEPLOYMENT_TARGET to 10.3 (in my environment). Here is the failure (in Tcl, loading some libraries):

% source ../test/test.tcl
dyld: tclsh multiple definitions of symbol ___bam_30_btreemeta
/Users/gmf/sc/cvs/db/build_unix/.libs/libdb_tcl-4.3.dylib(bt_upgrade.o) definition of ___bam_30_btreemeta /Users/gmf/sc/cvs/db/build_unix/.libs/libdb_cxx-4.3.dylib(single module) definition of ___bam_30_btreemeta dyld: tclsh NSLookupSymbolInImage() dynamic library: /Users/gmf/sc/cvs/xml/build_unix/.libs/libdbxml_tcl-2.0.dylib does not define symbol: _Dbxml_tcl_SafeInit
couldn't find procedure Dbxml_tcl_Init

There are 3 link lines of interest in the build output (4 if you count
Linking core DB (this may not matter, since it's not directly part of the problem): cc -dynamiclib ${wl}-flat_namespace ${wl}-undefined ${wl}suppress -o .libs/libdb-4.3.dylib

The C++ library:
g++ -dynamiclib -single_module ${wl}-flat_namespace ${wl}-undefined ${wl}suppress -o .libs/libdb_cxx-4.3.dylib

And the Tcl library:
cc -dynamiclib ${wl}-flat_namespace ${wl}-undefined ${wl}suppress -o .libs/libdb_tcl-4.3.dylib

Note that ALL 3 of these libraries load all of the core DB .o files, and therefore
duplicate those symbols.


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