Ubuntu – Are gcc versions tied to kernel versions

gcckernelupgrade

Is there any link between gcc versions and the version of a kernel ? Specifically, would I be able to install a very old version of gcc onto the latest kernel. Alternatively would I be able to build the latest version of gcc on a very old kernel? Are there any compatibility problems between the two for any version ??

Best Answer

You might have trouble compiling new kernels with very old versions of GCC.

Besides that, no, GCC versions are not tied to the Linux kernel's version:

  • You can run an ancient GCC version on a system with a new kernel.
  • You can run a new GCC version on a system with a very old kernel. The only thing that would stop you from doing this would be if your new GCC version requires a version of libc that will not run on that kernel. But this is not a particularly likely scenario.

With that said, you should be careful about installing an older GCC over a newer GCC, since the newer GCC may be needed. If you're building GCC yourself from source, you can configure the build to install in its own prefix (rather than /usr). If this still breaks builds, make sure the newer GCC (which was there before) is in a directory earlier in the PATH environment variable than the older GCC (which you more recently installed).

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