On 8 August 2014 12:13, Kirill Voronin wrote: > > OK, thanks for you responses. > > Can you please make it a bit more clear about how to build gcc after using > download_prerequisites script ? I don't know what isn't clear about the steps at the bottom of the http://gcc.gnu.org/wiki/InstallingGCC page. > Running > > ../gcc-4.9.0/configure > --prefix=/ifs/home/icmmg/voronin/pardiso_proekt/pardiso_project/new/gcc_install > --enable-shared > > fails with the error > > checking for the correct version of gmp.h... no > configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+. > Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify > their locations. > > since there is no gmp, mpc and mpfr built. I'm guessing you ran download_prerequisites in the wrong directory. > As far as i understand, the download_prerequisites script just downloads > the source files. No, it downloads them, unpacks them and renames the directories. GCC will then build those prerequisites automatically and will know how to link to them correctly. > How should I build it? As it says at http://gcc.gnu.org/wiki/InstallingGCC If you do that correctly it works, so apparently you are not doing it correctly.