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Re: Re: Re: GCC 6.1 Hard-coded C++ header paths and relocation problem on Windows

We use neither --with-sysroot nor --with-build-sysroot.
The reason is that, the hard-coded path in GCC repository - that is, the /mingw/ one - does not actually exist.

In order to build GCC for mingw targets, we take either solution:
0) Make a symlink (or rather, a copy, since Windows does not support symlinks) as /mingw/, as mentioned in
1) Replace the non-existent path with an existent one, as done in

Best regards,

åääïAndrew Pinski <>
åéææï2016-05-10 05:10
æääïBrett Neumeier
æéïlh_mouse,Jonathan Wakely,gcc
äéïRe: Re: GCC 6.1 Hard-coded C++ header paths and relocation problem on Windows

On Mon, May 9, 2016 at 1:31 PM, Brett Neumeier <> wrote:
> On Tue, May 3, 2016 at 10:01 AM, lh_mouse <> wrote:
>> Should I file a bug report then?
>> We need some Linux testers, though not many people on Linux relocate compilers.
> For what it's worth -- I encountered the same problem on a GNU/Linux
> system. In my specific situation, I'm cross-compiling GCC using an
> AMD64-to-mips64el cross-toolchain, and installing the resulting GCC in
> a sysroot directory. When I try to use that GCC on a target device
> where (of course) the sysroot directory becomes "/", the hard-coded
> "/path/to/sysroot" from the host system is still used to find the C++
> headers, resulting in the same ".../include/c++/6.1.1/cstdlib:75:25:
> fatal error: stdlib.h: No such file or directory" error message you
> got.
> Changing #include_next to #include in cstdlib and cmath fixed my
> problem -- so, thank you very much for this discussion! It helped at
> least one other person.
> Please let me know if there's any other testing I can do to help.

This sounds like a good use of --with-build-sysroot instead of just
I use the following for the candian cross:
--with-sysroot=/ --with-build-sysroot=${SYSROOT}


> Cheers,
> Brett

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