vst: undefined linker symbol warnings

[koppi]

On Ubuntu 16.04: during the re-scan of the vst directory by Renoise (- my vst host), I'm getting the following undefined linker symbol warnings and the ambix vst plugins do not show up in the DAW:

Renoise LOG> Application: Enter MainLoop...
Renoise LOG> VSTPlugs: VST_PATH environment variable not set. Using '/usr/lib[64]/vst:/usr/local/lib[64]/vst:~/.vst'...
Renoise LOG> Audio Plugins: Skipping VST plugin path '/usr/lib/vst/' (Directory does not exist)...
Renoise LOG> Audio Plugins: Skipping VST plugin path '/usr/lib64/vst/' (Directory does not exist)...
Renoise LOG> Audio Plugins: Skipping VST plugin path '/usr/local/lib/vst/' (Directory does not exist)...
Renoise LOG> Audio Plugins: Skipping VST plugin path '/usr/local/lib64/vst/' (Directory does not exist)...
Renoise LOG> Audio Plugins: Searching for VST plugins in '/home/koppi/.vst/'
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_binaural_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_binaural_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_converter_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_converter_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_decoder_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_decoder_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_directional_loudness_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_directional_loudness_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_encoder_i2_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_encoder_i2_o5.so: undefined symbol: FT_Init_FreeType') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_encoder_i4_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_encoder_i4_o5.so: undefined symbol: FT_Init_FreeType') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_encoder_i6_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_encoder_i6_o5.so: undefined symbol: FT_Init_FreeType') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_encoder_i8_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_encoder_i8_o5.so: undefined symbol: FT_Init_FreeType') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_encoder_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_encoder_o5.so: undefined symbol: FT_Init_FreeType') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_maxre_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_maxre_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_mirror_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_mirror_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_rotator_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_rotator_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_rotator_z_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_rotator_z_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_vmic_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_vmic_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_warp_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_warp_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> VstPlugs: Trying to instantiate /home/koppi/.vst/ambix_widening_o5.so
Renoise LOG> VstPlugs: Instantiate FAILED (failed to open the DLL: '/home/koppi/.vst/ambix_widening_o5.so: undefined symbol: glXGetProcAddress') !!!
Renoise LOG> LADSPA: LADSPA_PATH environment variable not set. Using '/usr/lib[64]/ladspa:/usr/local/lib[64]/ladspa:~/.ladspa'...

Any hints on this?

[umlaeute]

looks like an underlinking with gl(x).

try force-preloading the gl libraries when starting renoise:

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGL.so renoise

(the actual path my differ, depending on your system)

[koppi]

@umlaeute thank's for the hint!

With the following on my Ubuntu 16.04 installation Renoise loads the ambix VST plugins successfully:

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGL.so:/usr/lib/x86_64-linux-gnu/libfreetype.so renoise

[umlaeute]

actually, i wouldn't yet close this issue. what i've posted is a hack to workaround the problem. the proper fix is to correctly link the plugins. (so if you can, please re-open it)

[kronihias]

in CMakeLists.txt I Link against OpenGL and this works for me under Debian. Does Ubuntu behave somehow different or did you not use the Cmake build system?

[kronihias]

@koppi i fixed the build for Ubuntu. please try again now. best, matthias

[koppi]

@kronihias Thank's for the quick fix https://github.com/kronihias/ambix/commit/94f9e1b08d99a2acfa4184b6d1cfdb1fd1073bfb . the ambix vst plugins work now for me. Tested on Ubuntu 16.04 64 bit and Renoise V3.1.0 as vst host.