Using newer gcc in /opt/netapps

Gcc-4.9.1 is in /opt/netapps/gnu/gcc. In order for you to use it, this may have to be appended to your .profile, .bash_profile or whatever applies.

# This is a bash snippet, to be sourced from .profile

GCCBASE="/opt/netapps/gnu/gcc"

# If you want the newer tools by default, put them at the beginning of $PATH
export PATH="${PATH}:${GCCBASE}/bin"

# Have Make pick the newer compiler
export CXX="${GCCBASE}/bin/g++"

# For good measure: default compiler flags for the C++ course
export CXXFLAGS="${CXXFLAGS} -Wall -std=c++11"

# This is for during compile: prefer newer headers
CPLUS_INCLUDE_PATH="${GCCBASE}/include:${CPLUS_INCLUDE_PATH}"

# This is for linking during build: prefer newer libraries
export LD_LIBRARY_PATH="${GCCBASE}/lib/../lib64:${LD_LIBRARY_PATH}"

# This is for runtime linking: prefer older libraries
export LD_RUN_PATH="${LD_RUNPATH}:${GCCBASE}/lib/../lib64"

# Man should also find the newer manpages
export MANPATH="${MANPATH}:${GCCBASE}/share/man"

Please note: /opt is *NOT* in ld.so.conf, and should not be

There is now Gcc-5.0 as well. You can use the above script, but change

GCCBASE="/opt/netapps/gnu/gcc"

to

GCCBASE="/opt/netapps/gnu/gcc/5.0"

Mind you, gcc-5.0 is still in development stage. It hasn't been released yet.