Arg, due to memory consumption, gcc 4.3.5 cannot build itself or 4.5.0. Host compiler can build 4.3.5 but not newer due to c9x usage (I opened a bug, it appears to have gotten a lot of attention. :) ) I got further with 4.5.0 by disabling -g and -O2. gcc -c -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -I. -I. -I/home/jayk/src/gcc-4.3.5/gcc -I/home/jayk/src/gcc-4.3.5/gcc/. -I/home/jayk/src/gcc-4.3.5/gcc/../include -I/home/jayk/src/gcc-4.3.5/gcc/../libcpp/include -I/home/jayk/include -I/home/jayk/src/gcc-4.3.5/gcc/../libdecnumber -I/home/jayk/src/gcc-4.3.5/gcc/../libdecnumber/dpd -I../libdecnumber /home/jayk/src/gcc-4.3.5/gcc/c-common.c -o c-common.o cc1: out of memory allocating 8016 bytes after a total of 132342656 bytes make[2]: *** [c-common.o] Error 1 gcc -c -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wc++-compat -DHAVE_CONFIG_H -I. -I. -I/home/jayk/src/gcc-4.5.0/gcc -I/home/jayk/src/gcc-4.5.0/gcc/. -I/home/jayk/src/gcc-4.5.0/gcc/../include -I/home/jayk/src/gcc-4.5.0/gcc/../libcpp/include -I/home/jayk/include -I/home/jayk/src/gcc-4.5.0/gcc/../libdecnumber -I/home/jayk/src/gcc-4.5.0/gcc/../libdecnumber/dpd -I../libdecnumber /home/jayk/src/gcc-4.5.0/gcc/fold-const.c -o fold-const.o cc1: out of memory allocating 8016 bytes after a total of 132359040 bytes make[2]: *** [fold-const.o] Error 1 make[2]: Leaving directory `/home/jayk/obj/gcc45/gcc' make[1]: *** [all-gcc] Error 2 make[1]: Leaving directory `/home/jayk/obj/gcc45' make: *** [all] Error 2 bash-4.1$ gcc -v Using built-in specs. Target: alphaev67-dec-osf5.1 Configured with: /home/jayk/src/gcc-4.3.5/configure -disable-nls -prefix=/home/jayk -with-gmp=/home/jayk -disable-bootstrap Thread model: posix gcc version 4.3.5 (GCC) I've asked administrator about the memory limit. I hit similar problems building gcc in virtual machines that I think had 256MB. I increased them to 384, Maybe gcc should monitor its maximum memory? And add a switch -Werror-max-memory=64MB, and use that when compiling itself, at least in bootstrap with optimizations and possibly debugging disabled? Or somesuch? I guess I can just make do with 4.3.5 built with host cc. Maybe I'll try splitting up some of the files. Is that viable to be applied for real? - Jay