r29787 is the latest revision I tried. I previously compiled r29731 without problem. The host is Linux 2.6.25.3 x86. The problem is:- cc1: warning: -funit-at-a-time is required for inlining of functions that are only called once In file included from liba52/imdct.c:725: liba52/imdct_3dnow.h: In function 'fft_asmb_3dnow': liba52/imdct_3dnow.h:257: error: can't find a register in class 'GENERAL_REGS' while reloading 'asm' liba52/imdct_3dnow.h:257: error: 'asm' operand has impossible constraints make: *** [liba52/imdct.o] Error 1 $ gcc -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ./configure --enable-languages=c,c++ --prefix=/home/chaz/Programs/gcc/4.4.1 --program-suffix=441 Thread model: posix gcc version 4.4.1 (GCC)