Am Dienstag, den 09.02.2010, 11:34 +0100 schrieb Michael Wild:
> On 9. Feb, 2010, at 11:05 , Micha Renner wrote:
>
> > A DLL-library is linked to static library.
> > The structure of the project is this:
> >
> > main-project
> > +--------- Project STATIC
> > |
> > +--------- Project DLL
> >
> > This works very well.
> > But if I include the following export part to the project of the DLL...
> >
> > INSTALL(TARGETS T-DLL EXPORT T-DLLExport
> > RUNTIME DESTINATION dll
> > LIBRARY DESTINATION lib
> > ARCHIVE DESTINATION lib)
> > INSTALL(EXPORT T-DLLExport DESTINATION lib/${T-DLL})
> >
> > ... CMake generates the message: "CMake Error: INSTALL(EXPORT
> > "TLIBExport" ...) includes target "T-DLL" which requires target
> > "T-Static" that is not in the export set."
> >
> > This is unexpected. I don't want export the static library because it is
> > already linked to the DLL and it is used only by the DLL.
> >
> > Micha
>
> But CMake can't know that somebody linking against the DLL won't need the
> static library. This is because the static library might contain additional
> symbols which are not used directly by any of the code in the DLL, and thus
> are not present in there. That's one of the most surprising facts of static
> linking...
This is true. Now, I understand the default behavior of CMake (Not bad,
CMake of course).
>
> The solution is to tell CMake explicitly which of the libraries are "in the
> link interface" and thus must be also exported using the
> LINK_INTERFACE_LIBRARIES target property of your DLL. Set it to the list of
> libraries which appear in the "link interface" of your library (i.e. NOT the
> static library you're talking about). But be careful, if you miss any of the
> real dependencies, all hell might break loose at any time, even far in the
> future...
Hopeless, I would have never found this solution.
Thank you very much.
Micha
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