Install gcc5g++ on Solaris
https://www.opencsw.org/packages/gcc5g++/

pkgadd -d http://get.opencsw.org/now
/opt/csw/bin/pkgutil -U
/opt/csw/bin/pkgutil -y -i gcc5g++ 
/usr/sbin/pkgchk -L CSWgcc5g++ # list files



PATH=/opt/csw/bin:$PATH