1

I run into problem compiling a kernel scheduler for testing

the compiling error

 linux-2.6.32-rc3/include/linux/compiler-gcc.h:86:30: fatal error: linux/compiler-gcc5.h: No such file or directory

Do I get this error because the kernel is too old?

kernel

uname -r

4.1.0-3-generic

gcc

gcc --version

gcc-5.real (Ubuntu 5.2.1-22ubuntu2) 5.2.1 20151010

So if this is the reason for the compilation error - what solutions are available? Should I for instance update the kernel - how do I do that? Or regress to an earlier version of gcc? Other sugestions?

  • Is there a particular reason why you're building version 2.6.32-rc3 of the kernel? – Stephen Kitt Apr 10 '16 at 16:17
  • @StephenKitt - its just for testing and this was the tarball the institution gave me (linsched-2.6.32-rc3.tar.gz). At the moment I dont know the alternatives? – Björn Hallström Apr 10 '16 at 16:22
4

Any kernel older than 3.18 will not compile using gcc 5. Use an older compiler.

0

You do not have the kernel sources. The compiler is looking for that header file.

This link will get you a version of the kernel source tree that should be mostly similar to what you are looking for.

https://cdn.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.32/linux-2.6.32.71.tar.xz

0

it's possible to install gcc-4.9 to be able to compile 3.xx kernels.

but then, next question would be: "how to switch for gcc-4.9 for kernel compilation?"

instead, the simpler answer would be here - just download missing file into include/linux folder

unfortunately gcc5 dislike "extern inline" construction at all, so you'll have to proceed with grep -sRl "extern inline" .|xargs sed -i -e "s/extern inline/inline/g" for all your kernel source code before moving forward with any compilation

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