Fail to install gcc-4.9 in ubuntu17.04
While trying to build llvm 3.4 from source on Ubuntu 17.04 , I have encountered some problems related to gcc 6.3 (described here ), so I want to use gcc-4.9 . However, when I run from terminal: sudo apt install gcc-4.9 --fix-missing I get the following error: Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: cpp-4.9 gcc-4.9-base libasan1 libcloog-isl4 libgcc-4.9-dev Suggested packages: gcc-4.9-locales gcc-4.9-multilib gcc-4.9-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan1-dbg liblsan0