Hi, I would like to build a cross-compiler toolchain for embedded ARM targets (to replace arm-elf-gcc-3.4.3). The targets are proprietary and has some special system libraries (so -nostdlib is used and linkerscripts). I think gcc needs some functions from the system (such as some malloc() for C++ operator new etc). I searched FAQ and the wiki but did not find much information about how to compile such a compiler toolchain. I've read about "--with-local-prefix". Should I create some somepath/include and copy the systems "libc" headers into it (there are just a very few functions known from ANSI-C) and give --with-local-prefix=somepath/include? I cannot believe that this is really that simple. I would like to play with Google Go (language). I've read that on some platforms with gcc-4.6.0 it might work, on some not. Where do I find more information? Would it be worth a try? Why doesn't it work on all platforms where gcc code works? I guess because of some dependencies to the systems? Could those be fullfilled by writing some functions (to create threads, mutexes)? Any hints and pointers appreciated! Regards, Steffen