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Sushil Kambampati wrote:
| I could compile and link to a somewhat older version of InterViews using | libtool 1.4.2 but with version 1.5 of libtool the -single_module flag is | activated by default and now I cannot link against InterViews libraries, | I get an error from ld "multiple definitions of symbol". The class | PSFont is the culprit. | | When I go into libtool and rip out the -single_module flag then the | executable links again. | | Why was -single_module made the default and what is the proper way of | dealing with this issue? I admit I know next to nothing about the GNU | build utils.
The -single_module flag on darwin is the equivalent of doing ld -r ... and then linking the shared library, it is necessary for C++ shared libraries if you want static initializers to work. Darwin's dyld is extremely lazy and will not call static initializers until/unless a symbol from the same module as the initializer is referenced, using the - -single_module flags ensures that all static initializers are called as soon as any symbol from the library is used.
If you are seeing a library containing only C code linked with - -single_module, then it is my bug, and I apologise for it.
You'll have to fix the code so that you don't implement any of the same global symbols as the InterViews library.
Peter - -- Peter O'Gorman - http://www.pogma.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (Darwin) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
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