Making a 64 bit shared library that dynamically links to a 32 bit library on Mac OS X Snow Leopard
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by carneades
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Published on 2010-03-09T22:01:42Z
Indexed on
2010/03/13
23:05 UTC
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Update: After some more reading I see that this problem is totally general, you can't mix architectures in the same process, so 64 bit Java cannot dlopen()
a 32 bit library like FMOD. Is there any possible workaround for this, keeping in mind I'm writing my own C interface to the FMOD library?
I need to make a 64-bit dylib on Max OS X because Java Native Access only likes 64-bit libraries on 64-bit machines. The problem is, my C source code dynamically includes FMOD which on Mac only provides 32-bit dylibs. When I try to compile without the -m32 option (since I must output a 64-bit dylib) I get the following error:
gcc -dynamiclib -std=c99 -pedantic -Wall -O3 -fPIC -pthread -o ../bin/libpenntotalrecall_fmod.dylib ../../src/libpenntotalrecall_fmod.c -lfmodex -L../../lib/osx/
ld: warning: in /usr/lib/libfmodex.dylib, missing required architecture x86_64 in file
Undefined symbols:
"_FMOD_System_CreateSound", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_Channel_GetPosition", referenced from:
_streamPosition in ccJnlwrd.o
"_FMOD_System_Create", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_System_PlaySound", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_Sound_Release", referenced from:
_stopPlayback in ccJnlwrd.o
"_FMOD_Channel_IsPlaying", referenced from:
_playbackInProgress in ccJnlwrd.o
"_FMOD_System_Update", referenced from:
_streamPosition in ccJnlwrd.o
_startPlayback in ccJnlwrd.o
"_FMOD_Channel_SetPaused", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_System_Release", referenced from:
_stopPlayback in ccJnlwrd.o
"_FMOD_System_Init", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_Channel_SetVolume", referenced from:
_startPlayback in ccJnlwrd.o
"_FMOD_System_Close", referenced from:
_stopPlayback in ccJnlwrd.o
"_FMOD_Channel_SetCallback", referenced from:
_startPlayback in ccJnlwrd.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [all] Error 1
Shouldn't it be possible to get a 64 bit dylib from my source code that dynamically includes 32 bit libraries?!
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