projectGenerator c++ 14 error

beginners
#1

hello,

i am using latest oF0.9.2 under ubuntu 14.04 and i get this error when launching compilePG.sh

  g++: error: unrecognized command line option -std=c++14

i am using gcc-4.9 and g+±4.9

thanks

#2

seems like changing the flag

std=c++14

into

std=c++11

in

ofPath/libs/openframeworksCompiled/project/makefileCommon/config.linux.common.mk

did the trick

#3

mmh, that’s strange gcc 4.9 should recognize that flag just fine, the test servers run with 14.04 and gcc 4.9 and it compiles without problem there

#4

projectGenerator compilation succeeded, but same problem appeared with another app i am trying to build.
I ended up switching every c++14 flags to c++11 in order to make it to build.

it definitely doesn’t like c++14

#5

are you sure you are using gcc 4.9? if you type g++ -v in a terminal what do you get?

#6

yes. I double checked. gcc and g++ version 4.9.3

i updated alternative once more to be sure

  sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.9

i can see it warns me about some broken alternative.

I am re-installing gcc and g++ just in case…

#7

Just chiming in to say I just had the exact same issue. I reinstalled g+±4.9 with

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install g++-4.9

and then I needed to remove the old link to g++4.8 and relink with 4.9 so

sudo rm /usr/bin/g++
sudo ln -s /usr/bin/g++-4.9 /usr/bin/g++

and everything seems to be working.

#8

hello,

i re-installed gcc-4.9 and g+±4.9 and did an upgrade-alternatives again and PG seems to compile ok now…

thanks