OK, the build process anew: 1. I configured gcc-core 4.3.2 with --prefix="$INSTALLED_SOFTWARE"/"$program" --with-local-prefix="$INSTALLED_SOFTWARE"/"$program" --with-gmp="$INSTALLED_SOFTWARE"/gmp --with-mpfr="$INSTALLED_SOFTWARE"/mpfr 2. I tried to build with 'make -j 2 bootstrap' and got the following during stage 2 (<build dir>/stage_current contains 'stage2'): /home/angel/software/gcc/build/./prev-gcc/xgcc -B/home/angel/software/gcc/build/./prev-gcc/ -B/home/angel/installed_software/gcc/powerpc-unknown-linux-gnu/bin/ -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../../source/unpacked/gcc -I../../source/unpacked/gcc/. -I../../source/unpacked/gcc/../include -I../../source/unpacked/gcc/../libcpp/include -I/home/angel/installed_software/gmp/include -I/home/angel/installed_software/mpfr/include -I../../source/unpacked/gcc/../libdecnumber -I../../source/unpacked/gcc/../libdecnumber/dpd -I../libdecnumber ../../source/unpacked/gcc/dbgcnt.c -o dbgcnt.o In file included from ../../source/unpacked/gcc/dbgcnt.c:45: ../../source/unpacked/gcc/dbgcn I've attached the two dependecy files for dbgcnt.c: one produced from the above command line but with -MD added and one produced with -MD and -DHAVE_LIMITS_H added to the same command line. None of the dependency files includes auto-host.h (where HAVE_LIMITS_H is defines as 1). In this case, how is limits.h supposed to get included in dbgcnt.c if not by passing -DHAVE_LIMITS_H to the compiler? Angel Tsankov