Build Qt 5.8 on RHEL 6.9

DanF

I am attempting to build Qt 5.8 on a RHEL 6.9 Workstation.

Upgraded GCC to 4.9.4 (verified through gcc --version)
Installed libcxx

When trying to to run ./configure, an error comes up : .cc1plus: error: unrecognized command line option "-std=c++11"

I am guess that is because while I have updated to GCC 4.9.4, cc1plus is still using 4.4.4 in libexec.

Has anyone gotten 5.8 to work on RHEL 6.9 successfully and can provide some guidance?

Thank you

SGaist

Hi and welcome to devnet,

Might be a silly question but do you also have g++ installed ?

ambershark

@DanF Sounds like it's still picking up your older g++. On some distributions you have to switch compilers using something like http://stackoverflow.com/questions/14677108/how-to-set-default-g.

DanF

g++ --version shows 4.9.4.

If I dont have a symlink to the version of cc1plus in libexec, I get an execvp error. The only way to get by that is to symlink to the older cc1plus. Building GCC 4.9.4 doesnt look like it builds cc1plus in.

So, I am guessing it has something to do with how I am building GCC (which I am only updating to get QT 5.8). I was hoping someone has gone through this already and gotten Qt 5.8 to work on RHEL 6.

ambershark

@DanF Ah yea I haven't... I really don't use ancient linux versions at all. So I haven't touched redhat in a long time. I prefer cutting edge stuff like gentoo, arch, etc.

As for your gcc update, yea it sounds like that wasn't a complete upgrade if it's not picking up your cc1plus.