How can I update gcc 5.3 to 6.1?
You can install GCC 6 by adding the ubuntu-toolchain-r/test
PPA. To do so, run the following commands:
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install gcc-6
You can verify that gcc-6
is installed by running gcc-6 --version
and the output should say gcc-6 (Ubuntu 6.1.1-2ubuntu12~16.04) 6.1.1 20160510
.
As suggested by Mohamed Slama, if you want to further change the default GCC and G++ to the latest versions, install g++-6 with
sudo apt install g++-6
and then run
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
If you want to build it from source (which I recommend as you can for example make a cross-compiler, etc.) download the source from a mirror.
Then extract it with:
tar -xvf gcc-6.1.0.tar.gz
After that change directory to there:
cd gcc-6.1.0
Then create build
directory and cd
to it:
mkdir build
cd build
Then configure the makefile (--disable-multilib
means to not build libraries for cross-compilation):
../configure --enable-languages=c,c++ --disable-multilib
If you ran into errors due to missing required libraries or other prerequisites: (Credits to this)
./contrib/download_prerequisites
And then build it:
make -j 8
This process may take some time and after done invoke this:
sudo make install
That's it!