Hi there: I have Fedora Core 4 installed on my PC and the gcc installed is 4.0.0. To compile some other older software, I have to have gcc3.3.2 installed. So I following the standard steps on the website of gcc.gnu.org: tar zxf gcc-3.3.2.tar ../gccObj/configure --prefix=/usr/local/gcc-3.3.2 make bootstrap However, 'make bootstrap' spat out the following error shortly after it was launched: ../../gcc-3.3.2/gcc/read-rtl.c: In function ?fatal_with_file_and_line?: ../../gcc-3.3.2/gcc/read-rtl.c:53: warning: traditional C rejects ISO C style fu nction definitions ../../gcc-3.3.2/gcc/read-rtl.c: In function ?read_rtx?: ../../gcc-3.3.2/gcc/read-rtl.c:653: error: invalid lvalue in increment make[2]: *** [read-rtl.o] Error 1 make[2]: Leaving directory `/home/qz27/gccObj/gcc' make[1]: *** [stage1_build] Error 2 make[1]: Leaving directory `/home/qz27/gccObj/gcc' make: *** [bootstrap] Error 2 Could you please give me some idea about how to work around this? Thanks a lot for your help! Qinghai