Hi all, I built GRASS (wow! 1 hour against the 3 hours needed on my old machine... and I added the JPEG and the FFMPEG support, previously unconfigured!). NVIZ build failed, because of the following errors: (cd /usr/local/src/grass-6.3.0/dist.i686-pc-mingw32/lib; ln -f -s libgrass_ogsf.6.3.0.dll /usr/local/src/grass-6.3.0/dist.i686-pc-mingw32/lib/libgrass_ogsf.dll) OBJ.i686-pc-mingw32/gsd_img_mpeg.o: In function `gsd_close_mpeg': C:/MSYS/local/src/grass-6.3.0/lib/ogsf/gsd_img_mpeg.c:182: undefined reference to `av_free' C:/MSYS/local/src/grass-6.3.0/lib/ogsf/gsd_img_mpeg.c:183: undefined reference to `av_free' collect2: ld returned 1 exit status make: *** [/usr/local/src/grass-6.3.0/dist.i686-pc-mingw32/lib/libgrass_ogsf.6.3.0.dll] Error C:\MSYS\mingw\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\mingw32\bin\ld.exe: cannot find -lgrass_ogsf collect2: ld returned 1 exit status make[1]: *** [nvwish.exe] Error 1 make[1]: Leaving directory `/usr/local/src/grass-6.3.0/visualization/nviz/src' make: *** [default] Error 2 it seems that all is generated by the undefined reference to the av_free function. I googled for it and found as follows: http://www.irisa.fr/texmex/people/dufouil/ffmpegdoxy/mem_8c.html#0c9096f498624c525aa2315b8a20c411 on the following page you can find all the information on how I configured and built both FFMPEG and GRASS: http://www.webalice.it/marco.pasetti/temp/grass_wip/BuildFromSource.html Thanks for your help, Marco
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