changing default version of g++

Mahmood Naderan nt_mahmood@yahoo.com
Thu Feb 7 15:37:00 GMT 2013


Hi
These are the installed gcc/g++ on my system


$ ls -l /usr/bin/g++*
lrwxrwxrwx 1 root root      7 Mar 13  2012 /usr/bin/g++ -> g++-4.6
-rwxr-xr-x 1 root root  94808 Mar 16  2006 /usr/bin/g++-3.4
lrwxrwxrwx 1 root root     52 Feb  6 23:32 /usr/bin/g++-4.1 -> /opt/gcc-4.1.2/host-x86_64-unknown-linux-gnu/gcc/g++
-rwxr-xr-x 1 root root 263328 Apr 16  2012 /usr/bin/g++-4.4
-rwxr-xr-x 1 root root 357312 Apr 16  2012 /usr/bin/g++-4.6


The default g++ should point to g++-4.6, however:

$ which g++
/usr/local/bin/g++


$ g++ -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --disable-multilib
Thread model: posix
gcc version 4.1.2


How can I change the default g++ to 4.6? 

Is it safe to create a symbolic link from /usr/local/bin/g++ to /usr/bin/g++ ?
Or there may be some libc incompatibilities?

 
Regards,
Mahmood



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