Using newer gcc in /opt/netapps: Difference between revisions
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The environment variables that are set in the sourceme snippet influence Make-like programs (GNU make, icmake). So projects using such utilities will automatically build your programs using the newer compiler. | The environment variables that are set in the sourceme snippet influence Make-like programs (GNU make, icmake). So projects using such utilities will automatically build your programs using the newer compiler. | ||
If you want to build by calling the compiler directly, you cannot just call 'g++'. | If you want to build by calling the compiler directly, you cannot just call 'g++'. Instead, call the newer compiler as $CXX, like this: | ||
${CXX} -o hello hello.cc | ${CXX} -o hello hello.cc | ||
Revision as of 10:41, 1 September 2015
Gcc-5.2 is in /opt/netapps/gnu/gcc/5.2. In order for you to use it, this may have to be appended to your .profile:
GCCSNIPPET=/opt/netapps/gnu/gcc/5.2/sourceme
[ -r ${GCCSNIPPET} ] && . ${GCCSNIPPET}
Please note: /opt is *NOT* in ld.so.conf, and should not be
The environment variables that are set in the sourceme snippet influence Make-like programs (GNU make, icmake). So projects using such utilities will automatically build your programs using the newer compiler.
If you want to build by calling the compiler directly, you cannot just call 'g++'. Instead, call the newer compiler as $CXX, like this:
${CXX} -o hello hello.cc
NB: if you are reading this page as a participant (or attendee) of the C++ course, please ask your questions on the mailing list first, not through the Service Desk.
Later versions
You may find that still later versions are available. Check /opt/netapps/gnu/gcc, and alter the above script by adjusting the line
GCCBASE="/opt/netapps/gnu/gcc/5.2"