[osgeo4w-dev] [osgeo4w] #397: FFTW misses import library

OSGeo4W trac_osgeo4w at osgeo.org
Tue Nov 19 05:40:04 PST 2013

#397: FFTW misses import library
Reporter:  jmalik       |       Owner:  osgeo4w-dev@…              
    Type:  enhancement  |      Status:  new                        
Priority:  major        |   Component:  Package                    
 Version:               |    Keywords:  fftw                       

Comment(by jmalik):


 Before going any further : chances are that the 32bit package has been
 generated from the prebuilt binaries distributed by the FFTW crew here :
 Whatever, this can be a helpful start point for the OSGeo4W 64 bit

 Those binaries already comes with .def files (but not the .lib ones).
 These simplifies the process, as only
 lib /machine:x64 /def:%FFTW_DEF% /out:%FFTW_IMPORTLIB%
 needs to be called to generate the import lib.

 Also :
  * their DEF file is quite different from the one generated with the
 attached script. there are symbols that are not output by dumpbin, and the
 other way around (some symbols output by dumpbin do not end in the def
 file). I am not so much confident about the VLC recipe I applied.
  * they include in their build all possible precision flavors
 (float/double/long double). I would be a client for both float and double
  * [major] your build depends on msys, since the dll require something
 called libwinpthread-1.dll. there is at least a missing dependency in the
 setup.hint, since I don't have that on my installation. the 32bit build
 was not requiring that (statically integrated?), and the fftw upstream
 build does not require that either.

 Do you have an opinion ?

Ticket URL: <http://trac.osgeo.org/osgeo4w/ticket/397#comment:4>
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