cannot make-cc1plus warnings lead to error

[aliabbaC]

Hi dears,
In system:
Fedora 21
Ruby 2.1.7
GCC 4.9.2

---

I follow the instructions but afer
$./prepare.sh
$ruby extconf.rb
when trying to $make and $make install, I got an error:

cc1plus: some warnings being treated as errors
Makefile:217: recipe for target 'export_wrap.o' failed
make: *** [export_wrap.o] Error 1

And the entire log of this error is bellow
cc1plus error.txt

I searched about this error but all of replies are about how to disable Werrors and etc.:-(
Is there any solution?