error while loading shared libraries

[GeoffreyPlitt]

Building on Raspberry Pi (arm).

Did cmake.

"sudo make install" looks good:

make install
 ---> Running in 05e55c5ff22c
Scanning dependencies of target libfluidsynth
[  2%] Building C object src/CMakeFiles/libfluidsynth.dir/drivers/fluid_oss.c.o
[  4%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_conv.c.o
[  7%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_hash.c.o
[  9%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_list.c.o
[ 11%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_ringbuffer.c.o
[ 14%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_settings.c.o
[ 16%] Building C object src/CMakeFiles/libfluidsynth.dir/utils/fluid_sys.c.o
[ 19%] Building C object src/CMakeFiles/libfluidsynth.dir/sfloader/fluid_defsfont.c.o
[ 21%] Building C object src/CMakeFiles/libfluidsynth.dir/sfloader/fluid_ramsfont.c.o
[ 23%] Building C object src/CMakeFiles/libfluidsynth.dir/sfloader/fluid_sfont.c.o
[ 26%] Building C object src/CMakeFiles/libfluidsynth.dir/sfloader/fluid_sffile.c.o
/fluidsynth-2.0.0.beta1/src/sfloader/fluid_sffile.c: In function ‘chunkid’:
/fluidsynth-2.0.0.beta1/src/sfloader/fluid_sffile.c:478:9: warning: cast increases required alignment of target type [-Wcast-align]
     p = (unsigned int *)&idlist;
         ^
[ 28%] Building C object src/CMakeFiles/libfluidsynth.dir/sfloader/fluid_samplecache.c.o
[ 30%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_adsr_env.c.o
[ 33%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_chorus.c.o
[ 35%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_iir_filter.c.o
[ 38%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_lfo.c.o
[ 40%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_rvoice.c.o
[ 42%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_rvoice_dsp.c.o
[ 45%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_rvoice_event.c.o
[ 47%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_rvoice_mixer.c.o
[ 50%] Building C object src/CMakeFiles/libfluidsynth.dir/rvoice/fluid_rev.c.o
[ 52%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_chan.c.o
[ 54%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_event.c.o
[ 57%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_gen.c.o
[ 59%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_mod.c.o
[ 61%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_synth.c.o
[ 64%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_synth_monopoly.c.o
[ 66%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_tuning.c.o
[ 69%] Building C object src/CMakeFiles/libfluidsynth.dir/synth/fluid_voice.c.o
[ 71%] Building C object src/CMakeFiles/libfluidsynth.dir/midi/fluid_midi.c.o
[ 73%] Building C object src/CMakeFiles/libfluidsynth.dir/midi/fluid_midi_router.c.o
[ 76%] Building C object src/CMakeFiles/libfluidsynth.dir/midi/fluid_seqbind.c.o
[ 78%] Building C object src/CMakeFiles/libfluidsynth.dir/midi/fluid_seq.c.o
[ 80%] Building C object src/CMakeFiles/libfluidsynth.dir/drivers/fluid_adriver.c.o
[ 83%] Building C object src/CMakeFiles/libfluidsynth.dir/drivers/fluid_mdriver.c.o
[ 85%] Building C object src/CMakeFiles/libfluidsynth.dir/drivers/fluid_aufile.c.o
/fluidsynth-2.0.0.beta1/src/drivers/fluid_aufile.c: In function ‘delete_fluid_file_audio_driver’:
/fluidsynth-2.0.0.beta1/src/drivers/fluid_aufile.c:103:35: warning: cast increases required alignment of target type [-Wcast-align]
  fluid_file_audio_driver_t* dev = (fluid_file_audio_driver_t*) p;
                                   ^
[ 88%] Building C object src/CMakeFiles/libfluidsynth.dir/bindings/fluid_cmd.c.o
[ 90%] Building C object src/CMakeFiles/libfluidsynth.dir/bindings/fluid_filerenderer.c.o
[ 92%] Building C object src/CMakeFiles/libfluidsynth.dir/bindings/fluid_ladspa.c.o
[ 95%] Linking C shared library libfluidsynth.so
[ 95%] Built target libfluidsynth
Scanning dependencies of target fluidsynth
[ 97%] Building C object src/CMakeFiles/fluidsynth.dir/fluidsynth.c.o
[100%] Linking C executable fluidsynth
[100%] Built target fluidsynth
Install the project...
-- Install configuration: "RelWithDebInfo"
-- Installing: /usr/local/lib/pkgconfig/fluidsynth.pc
-- Installing: /usr/local/bin/fluidsynth
-- Set runtime path of "/usr/local/bin/fluidsynth" to ""
-- Installing: /usr/local/lib/libfluidsynth.so.2.0.0
-- Installing: /usr/local/lib/libfluidsynth.so.2
-- Installing: /usr/local/lib/libfluidsynth.so
-- Installing: /usr/local/include/fluidsynth/audio.h
-- Installing: /usr/local/include/fluidsynth/event.h
-- Installing: /usr/local/include/fluidsynth/gen.h
-- Installing: /usr/local/include/fluidsynth/ladspa.h
-- Installing: /usr/local/include/fluidsynth/log.h
-- Installing: /usr/local/include/fluidsynth/midi.h
-- Installing: /usr/local/include/fluidsynth/misc.h
-- Installing: /usr/local/include/fluidsynth/mod.h
-- Installing: /usr/local/include/fluidsynth/ramsfont.h
-- Installing: /usr/local/include/fluidsynth/seq.h
-- Installing: /usr/local/include/fluidsynth/seqbind.h
-- Installing: /usr/local/include/fluidsynth/settings.h
-- Installing: /usr/local/include/fluidsynth/sfont.h
-- Installing: /usr/local/include/fluidsynth/shell.h
-- Installing: /usr/local/include/fluidsynth/synth.h
-- Installing: /usr/local/include/fluidsynth/types.h
-- Installing: /usr/local/include/fluidsynth/voice.h
-- Installing: /usr/local/include/fluidsynth/version.h
-- Installing: /usr/local/include/fluidsynth.h
-- Installing: /usr/local/share/man/man1/fluidsynth.1

But when I run "fluidsynth", I get linking errors:

fluidsynth: error while loading shared libraries: libfluidsynth.so.2: cannot open shared object file: No such file or directory

[derselbst]

A first guess would be that /usr/local/lib/ is not in your linker path. Try

LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH fluidsynth

[derselbst]

Or update the linker cache: https://lists.nongnu.org/archive/html/fluid-dev/2017-09/msg00009.html

[GeoffreyPlitt]

LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH worked for me, thanks!

[stanelie]

Same error for me.
I had to do a sudo ldconfig -v to make it work.
Shouldn't a command like that be at the end of the "make install" script?

[derselbst]

It is usually a bad idea to do more than the user has requested. Also, in this particular case: ldconfig requires root privileges, make install does not necessarily.