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I am trying to install a program that requires the libmad (MPEG audio decoder library) library on Mac OS X 10.7 Lion, but installing libmad.0.15.b results in this error:
version.c:1: error: CPU you selected does not support x86-64 instruction set
That library installs fine on OS X 10.5. Is it a 64-bit compatibility issue? I can’t find any specific instructions or documents regarding installing on Lion. Any suggestions?
Thanks.
By default, the C and C++ compilers on Snow Leopard and newer generate 64-bit binaries, not 32-bit as in older versions of OS X. The
libmadconfigure script apparently hasn’t been changed to cope with this, and so generates build commands that cause the 32/64 bit conflict you see.That means one way to fix it is to force a 32-bit build.
But, it’s easy enough to clue the configure script into the correct CPU type. For Lion:
For Snow Leopard, change the kernel version: