Re: Re: Re: Problem with building gcc 4.9.0 (libstdc++)

[Jonathan Wakely <jwakely dot gcc at gmail dot com>]

On 10 August 2014 12:58, Kirill Voronin wrote:
>
> Yes, the symbolic links called "gmp", "mpfr" and
> "mpc" in the gcc-4.9.0 source directory are present.
>
> I foolowed instructions from the installation guide
>
> https://gcc.gnu.org/wiki/InstallingGCC
>
> directly, but nevertheless got the following error (in config.log) when
> doing make (after successful configure)
>
> configure:4970: checking whether g++ accepts -static-libstdc++ -static-libgcc
> configure:4987: g++ -o conftest -g -O2   -static-libstdc++ -static-libgcc
> conftest.cpp  >&5
> g++: unrecognized option '-static-libstdc++'
> conftest.cpp:11:2: error: #error -static-libstdc++ not implemented
> configure:4987: $? = 1
> configure: failed program was:
> | /* confdefs.h */
> | #define PACKAGE_NAME ""
> | #define PACKAGE_TARNAME ""
> | #define PACKAGE_VERSION ""
> | #define PACKAGE_STRING ""
> | #define PACKAGE_BUGREPORT ""
> | #define PACKAGE_URL ""
> | /* end confdefs.h.  */
> |
> | #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
> | #error -static-libstdc++ not implemented
> | #endif
> | int main() {}

At the http://gcc.gnu.org/wiki/FAQ#configure_suffix page I've linked
to several times it says "There might be several test programs that
failed during the configuration, but some of these failures are
non-critical. Check for the last error entry in the file."

> The configure coomand was like
>
> ./contrib/download_prerequisites
> $PWD/../gcc-4.9.0/configure
> --prefix=/ifs/home/icmmg/voronin/pardiso_proekt/pardiso_project/new/gcc-4.9.0
> --enable-shared

If those are really the exact the commands you ran then you're
building in the source directory which can cause problems:
http://gcc.gnu.org/wiki/FAQ#configure

If that's the case then delete the build and source directories and
start again from scratch. If you're trying to build in the same
directory as your earlier failed attempts then that will cause
problems too, so you need to build in a clean directory.