[Bug libstdc++/80340] error: 'write' was not declared in this scope

["sbansal at ciena dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80340

--- Comment #3 from Sumit <sbansal at ciena dot com> ---
../gcc-4.8/configure 
    LDFLAGS="-L/opt/sp2/lib" 
    --build=i686-pc-linux-gnu 
    --host=i686-pc-linux-gnu 
    --target=powerpc-wrs-vxworks 
    --disable-libmudflap 
    --disable-libssp 
    --disable-libstdcxx-pch 
    --disable-sjlj-exceptions 
    --disable-symvers 
    --disable-fixed-point 
    --disable-decimal-float 
    --disable-lto 
    --disable-nls 
    --disable-libgomp
    --disable-multilib 
    --disable-shared 
    --enable-threads=vxworks 
    --enable-poison-system-directories 
    --enable-version-specific-runtime-libs 
    --enable-__cxa_atexit 
    --enable-languages=c,c++ 
    --exec-prefix='/opt/sp2/x86-linux2' 
    --libdir='/opt/sp2/lib' 
    --program-transform-name='s,^gcc$,cc,;s,$,ppc,' 
    --prefix=/opt/sp2 
    --with-gmp=/opt/sp2 
    --with-mpfr=/opt/sp2 
    --with-isl=/opt/sp2 
    --with-gxx-include-dir=''\''/opt/sp2/'\''include/c++/4.8.1' 
    --with-build-time-tools=/opt/sp2/x86-linux2/powerpc-wrs-vxworks/bin 
    --with-cloog=/opt/sp2 
    --with-gnu-ld 

I understand 4.8.1 is no longer supported. But our project has to use it. Any
help in this regard will be appreciated.
Thanks.