fixincludes ignores sysroot

[Didier Kryn]

Le 12/12/2017 à 17:19, Didier Kryn a écrit :
> Hello.
>
>     I'm compiling gcc-6.3.0 in a chroot where there are no system 
> headers in /usr/include. This means that both the toolchain used for 
> build and the built compiler are sysrooted.
>
>     The compilation fails in libmpx/mpxrt/mpxrt-utils.c because 
> PATH_MAX isn't defined.
>
>     PATH_MAX isn't defined because gcc/include-fixed/limits.h doesn't 
> contain the instruction #include_next <limits.h>
>
>     The reason why this instruction isn't there is that some process 
> in fixincludes hasn't found /usr/include/limits.h. Touching this file 
> is enough to solve the issue.
>
>     It seems to me that, when the toolchain is sysrooted, fixincludes 
> should search the sysroot for system headers, rather than the 
> canonical location. Dunno how to achieve that though. 

     Not sure which sysroot should be searched. Maybe it's the built 
compiler's sysroot. In my case they're identical.

     Didier