Hi folks I've run into trouble trying to compile gcc 4.2 (gcc-4.2-20070221) on an amd64 machine running 64 bit Ubuntu. I configure with: ./configure --disable-multilibs --enable-languages=fortran then doing a make gets as far as compiling ../.././gcc/crtstuff.c in gcc-4.2-20070221/host-x86_64-unknown-linux-gnu/gcc. /usr/include/gnu/stubs.h is included which then tries to include gnu/stubs-32.h, which doesn't exist, rather than gnu/stubs-64.h, which does. Thus apparently __WORDSIZE is defined as 32. Now Ubuntu has 64 bit libraries in /usr/lib and 32 bit libraries in /usr/lib32 (with a simlink from /usr/lib64 to /usr/lib). Any ideas about how I can coerce configure to set things up correctly to build a 64 bit compiler? Ciao Terry -- Dr Terry Frankcombe Physical Chemistry, Department of Chemistry Göteborgs Universitet SE-412 96 Göteborg Sweden Ph: +46 76 224 0887 Skype: terry.frankcombe <terry@xxxxxxxxxx>