I pulled the SVN source tree tonight and my build dies in libgfortran (several hours in), with the last few lines of output as shown. This is debian/etch (Pentium M processor). The only dependencies I had to source specifically for the build were mpfr (2.3.1) and gmp (4.2.2). I'm not sure what other info is useful. ed@whisper:~/fun/gcc$ uname -a Linux whisper 2.6.18-3-686 #1 SMP Mon Dec 4 16:41:14 UTC 2006 i686 GNU/Linux Build commands were just: ./configure --prefix=/usr make clean && make Output is as follows: libtool: compile: /home/ed/fun/gcc/host-i686-pc-linux-gnu/gcc/xgcc -B/home/ed/fun/gcc/host-i686-pc-linux-gnu/gcc/ -B/usr/i686-pc-linux-gnu/bin/ -B/usr/i686-pc-linux-gnu/lib/ -isystem /usr/i686-pc-linux-gnu/include -isystem /usr/i686-pc-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I../.././libgfortran -I. -iquote../.././libgfortran/io -I../.././libgfortran/../gcc -I../.././libgfortran/../gcc/config -I../../host-i686-pc-linux-gnu/gcc -D_GNU_SOURCE -std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings -fcx-fortran-rules -g -O2 -MT unix.lo -MD -MP -MF .deps/unix.Tpo -c ../.././libgfortran/io/unix.c -fPIC -DPIC -o .libs/unix.o : Assembler messages: :5742: Error: symbol `fstat64' is already defined :5775: Error: symbol `lstat64' is already defined :5808: Error: symbol `stat64' is already defined make[3]: *** [unix.lo] Error 1 make[3]: Leaving directory `/home/ed/fun/gcc/i686-pc-linux-gnu/libgfortran' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/ed/fun/gcc/i686-pc-linux-gnu/libgfortran' make[1]: *** [all-target-libgfortran] Error 2 make[1]: Leaving directory `/home/ed/fun/gcc' make: *** [all] Error 2