Problem with building gcc 4.9.0 (libstdc++)

[Kirill Voronin]

OK, thanks for you responses.

Can you please make it a bit more clear about how to build gcc after using
download_prerequisites script ?

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.
As far as i understand, the download_prerequisites script just downloads
the source files.

How should I build it?


> On 8 August 2014 11:22, Kirill Voronin <kvoronin@labchem.sscc.ru> wrote:
>>
>> Actually, the version doesn't matter except it should be greater than
>> 4.8.
>>
>> I've already read
>>
>> https://gcc.gnu.org/wiki/FAQ#configure_suffix
>>
>> but actually there is no answer for my case since I do have mpc, gmp and
>> mpfr installed (correctly at least as make check claimed for each of
>> these
>> three).
>
> Then you failed to understand the FAQ. It does answer your case.
>
>> If it didn't find some libs, I understand that I would have checked the
>> option --with-... and check the paths but now it seems like installing
>> one
>> of the internal (for gcc) packages stdc++ failed.
>
> Wrong.
>
>> So, you recommend to install mpc, gmp and mpfr once again using
>> prerequisites?
>
> Don't install them separately if you don't know what you're doing.
>
> See http://gcc.gnu.org/wiki/InstallingGCC
>


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