[PD-dev] Gem installation and undefined symbols

Antti Silvast asilvast at iki.fi
Sun Mar 20 13:18:33 CET 2005


Hi,

I'm trying to install Gem for development purposes, but have thus far had 
no luck. I'm running a Debian Linux and seem to be suffering from plenty 
of "undefined symbols".

I've unpacked the packages GemLibs-linux-1.tgz and gem-0.90.0.tgz to 
directories GemLibs/ and gem-0.90.0/. The makeauxlibs in GemLibs works 
fine. After that I go to gem-0.90.0/src/Gnu and there write ./configure 
followed by make. Both succeed with no errors, but when I try to run pd 
-lib Gem, the fuss with undefined symbols begins. As there are plentiful 
of those, new ones emerging once I get rid of the old, I'll list all of 
them here.

1. First I get:

   Gem.pd_linux: undefined symbol: _16pix_kaleidoscope.g_pCurrentCosTable

I found a solution of adding #define NO_HACK to the file 
gem-0.90/src/Base/configLinux.h. Then when I remove 
gem-0.90/src/Pixes/pix_kaleisdoscope.o and retype make in the 
Gnu/src-directory, this problem disappears...

2. Only to be replaced by new ones.

   Gem.pd_linux: undefined symbol: GetVideoWidth__CQ23avm10StreamInfo
   Gem.pd_linux: undefined symbol: GetVideoHeight__CQ23avm10StreamInfo

At this point I tried reconfiguring in gem-0.90/src/Gnu with

   ./configure --disable-new

But no luck. So just to see what happens, I decided to start commenting 
out the troublecausing lines in cpp-files, to test if I'll get Gem 
running at all. Removed these lines all together:

gem-0.90.0/src/Pixes/pix_filmLinux.cpp:

   m_xsize = (*m_info).GetVideoWidth();
   m_ysize = (*m_info).GetVideoHeight();

gem-0.90.0/src/Pixes/filmAVIPLAY.cpp:

   m_image.image.xsize = (*m_info).GetVideoWidth();
   m_image.image.ysize = (*m_info).GetVideoHeight()

And then re-made. No more complaints about this subject.

3. The next file to cause troubles was gem-0.90.0/src/Geos/text3d.cpp, 
with the following error message:

   Gem.pd_linux: undefined symbol: __15FTGLPolygonFontPCc

I have installed ftgl-dev, a library to render text in OpenGL using 
FreeType. So finding there was nothing else to do, once again commented 
the appropriate line out in text3d.cpp.

4. Here is where I'm stuck:

   Gem.pd_linux: undefined symbol: Release__CQ23avm6CImage

The binaries filmAVIPLAY.o and pix_filmLinux.o match this symbol, but 
could not find any new lines to comment out... Not that just removing 
these lines is constructive way to deal with the problems to begin with!

Does anyone know how to help? It would be appreciated.

-Antti Silvast




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