Building 4.0.3 with local gcc on Linux

[Toby Darling]

Hi

I'm trying to build 4.0.3 with a local version of gcc. The build 
succeeds but octave fails to start:

address@hidden: ./run-octave
/tmp/toby/octave-build/src/.libs/lt-octave-gui: 
/usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required 
by /tmp/toby/octave-build/libgui/.libs/liboctgui.so.1)

The problem is, I can't figure out how to make octave/libtool use the 
libraries from my gcc installation rather than the system ones. I've 
tried setting LD_LIBRARY_PATH, LD_RUN_PATH, even GCC_EXEC_PREFIX to no 
avail.

Host is Scientific Linux 6.7 (RHEL)
Linux max.lmb.internal 2.6.32-573.12.1.el6.x86_64 #1 SMP Tue Dec 15 
08:24:23 CST 2015 x86_64 x86_64 x86_64 GNU/Linux

address@hidden: which gcc; gcc --version
/public/gcc/4_8_3/bin/gcc
gcc (GCC) 4.8.3

Any pointers much appreciated. Many thanks.

Cheers
Toby
--
Toby Darling, Scientific Computing (2N249)
MRC Laboratory of Molecular Biology
Francis Crick Avenue
Cambridge Biomedical Campus
Cambridge CB2 0QH
Phone 01223 267070