configure - gcc >4.6 needed for JDK9 build

[Kim Barrett]

> On Jan 25, 2017, at 3:34 AM, Mike Burton <mikeb at mycosystems.co.uk> wrote:
> 
> Platform is Ubuntu 14.04, error message below:
> 
> === Output from failing command(s) repeated here ===
> * For target hotspot_variant-server_libjvm_gtest_objs_BUILD_GTEST_LIBJVM_link:
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++.a(ctype.o): relocation R_X86_64_32S against `vtable for std::ctype<wchar_t>' can not be used when making a shared object; recompile with -fPIC
> /usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++.a: could not read symbols: Bad value
> collect2: ld returned 1 exit status
> === End of repeated output ===

Thanks for the info.

https://bugs.openjdk.java.net/browse/JDK-8173375