[CMake] Combined Static Libraries

Daniel J. Hilferty daniel at hilferty.org
Sat Aug 5 19:31:10 EDT 2006


Alan W. Irwin wrote:
> On 2006-08-05 13:01-0500 Daniel J. Hilferty wrote:
>
>> I am a programmer for the open source graphics library: G3D.  I have 
>> been evaluating CMake as a replacement for our current build system, 
>> but I have run into some trouble creating the release libraries.   
>> G3D's release libraries include a combination of our own object files 
>> and the libraries zlib, IJG and png.  For convenience, we link these 
>> libraries together in our release versions.   I have been unable to 
>> figure out how to do this with CMake.  I figured that the line:
>>
>> TARGET_LINK_LIBRARIES (G3D ${ZLIB_LIBRARY} ${PNG_LIBRARY} 
>> ${JPEG_LIBRARY})
>>
>> would link the libraries, but it does not automatically link with 
>> zlib, IJG and png.  The resulting libraries are useless unless the 
>> user explicitly links with those libraries.
>> Does anyone know how to create these combination libraries with CMake?
>
> I only have a month of experience with CMake but that experience (PLplot
> uses libgd which links to the png, jpeg, and zlib libraries) is such an
> approach works fine when building shared libraries, but I haven't 
> tried it
> yet when building static libraries. Have you dumped out exactly what
> ${ZLIB_LIBRARY} etc. variable values are for your case?
>
> More details would be helpful as well.  Please post the values of the
> above variables for your platform.  Also, what version of cmake, what
> platform, what is the exact link command you are getting in the build 
> tree,
> and in the install tree? (-DCMAKE_VERBOSE_MAKEFILE=ON).  Also, ldd output
> (if you are developing on Linux) on one of the libraries where you are
> unhappy with the linking would be useful.
>
> Alan
> __________________________
> Alan W. Irwin
>
> Astronomical research affiliation with Department of Physics and 
> Astronomy,
> University of Victoria (astrowww.phys.uvic.ca).
>
> Programming affiliations with the FreeEOS equation-of-state 
> implementation
> for stellar interiors (freeeos.sf.net); PLplot scientific plotting 
> software
> package (plplot.org); the Yorick front-end to PLplot (yplot.sf.net); the
> Loads of Linux Links project (loll.sf.net); and the Linux Brochure 
> Project
> (lbproject.sf.net).
> __________________________
>
> Linux-powered Science
> ________________________
After reading the FAQ, I found that what I actually wanted to create is 
a convenience library -- which is not yet supported by CMake.  The FAQ 
led me to believe that there is no future plans to support this 
feature.  Has anyone hear differently?

Dan


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