On 9 February 2012 21:17, Prashant Batra (prbatra) wrote: > Hello, > > I am trying to build a gcc/g++ tool-chain for i486 architechture on an > x86_64 machine. > I downloaded gcc-4.1.2 and configured it with host as x86_64 and target > as i486 after installing the pre-requistes i.e gmp, mrpf, and mpc > libraries . I don't think you need MPC for GCC 4.1.2 > ../gcc-4.1.2/configure --with-gmp=/auto/local//prbatra/gcc-install/ > --with-mpfr=/auto/local//prbatra/gcc-install/ > --prefix=/auto/local//prbatra/gcc-install/ --host=x86_64-gnu-linux > --target=i486-gnu-linux --enable-languages=c,c++,objc Do you really need to install GMP and MPFR manually? Installing them in non-system directories causes issues unless you build them with --disable-shared It's easier to put the GMP and MPFR sources in the GCC tree or install your OS vendor's packages. See http://gcc.gnu.org/wiki/InstallingGCC > In file included from ./gthr-default.h:1, > from ../../gcc-4.1.2/gcc/gthr.h:114, > from ../../gcc-4.1.2/gcc/unwind-dw2.c:42: > ../../gcc-4.1.2/gcc/gthr-posix.h:43:21: error: pthread.h: No such file > or directory > ../../gcc-4.1.2/gcc/gthr-posix.h:44:20: error: unistd.h: No such file or > directory You don't have the necessary system headers installed, you need to install a package such as glibc-devel or libc-dev
