Hi! I am using linuxbrew for a few packages, but I found that it uses gcc 5.5, and I need a more recent version. At least gcc6. Is there an option to switch it?
You can install
gcc to install gcc 9.
Yes, I can install gcc@9 or gcc@7, but I can’t find the way to make it as default one =(
There is only a default GCC in the sense that the formula are compiled with one if no others exist. If you want to use a different compiler with a formula you can just depend on another compiler in the formula. What is the problem you are trying to solve with this?
I am trying to build one of my packages for ROS, and seems like ROS supports only gcc 6+ (at least it is building with it).
And because linuxbrew is first in my PATH variable it is taking gcc from there. I was thinking to change it by default so I don’t have to modify my PATH so I can use linuxbrew’s gcc.
@kumuji What tool are you using to build your package?
What are possible ways to tell it where
gcc is without having to modify your
I am using
catkin_tools which is a python tool to automate building of ros packages. As far as I know it is calling CMake files in each of the package. I guess I can also specify
-DCMAKE_ flags for the correct compiler, but I thought of easier solution to just changing default gcc on the system(which is from brew). But if it is not trivial, I can think of something different.
Thank you for help!
brew install gcc@9 export CC=gcc-9 CXX=g++-9 ./configure && make # or whatever build script
If that doesn’t work try, try the command line options of the build script to set the preferred compiler.
If that doesn’t work, you can try…
ln -sf gcc-9 ~/.linuxbrew/bin/gcc ln -sf g++-9 ~/.linuxbrew/bin/g++ ln -sf gcc-9 ~/.linuxbrew/bin/cc ln -sf g++-9 ~/.linuxbrew/bin/c++