cc1plus: error: unrecognized command line option ‘-std=c++11’ Makefile:524: recipe for target 'about.o' failed make: *** [about.o] Error 1 make: *** Waiting for unfinished jobs.... $ gcc-config -l [1] i686-pc-linux-gnu-4.6.4 * [2] i686-pc-linux-gnu-4.8.3 error message was pasted here: http://pastebin.com/JbkEScXx emerge --info goes here: http://pastebin.com/J9jV9Bvs Reproducible: Always Steps to Reproduce: 1. $ sudo vim /etc/portage/package.use/transmission net-p2p/transmission -c++11 2. sudo emerge transmission 3. got the c++11 option error Actual Results: got the c++11 option error Expected Results: the transmission got compiled without any error $ sudo gcc-config 2 set gcc to 4.8 transmission can be compiled.
You need to use a newer version of gcc which supports C++11.