Unable to build libgcc for target x86_64-w64-mingw32, C preprocessor /lib/cpp fails sanity check

[Christer Solskogen]

On 9/22/2018 10:23 PM, Juan Pablo Garibotti Arias wrote:
> Hello,
> 
> I'm trying to build a cross compiler for UEFI, and having difficulties
> building libgcc after having built the compilers themselves. I've already
> built a cross compiler and libgcc (with and without red-zone) for
> freestanding x86_64-elf in the same machine, so not sure what the issue is.
> 
> The machine is an Arch vm, with the following packages installed through
> pacman:
> gcc-8.2.1+20180831-1
> bison-3.0.5-1
> flex-2.6.4-1
> gmp-6.1.2-1
> libmpc-1.1.0-1
> mpfr-4.0.1-1
> texinfo-6.5-1
>  From the AUR, I got:
> osl-0.9.2-2
> isl-0.20-4
> cloog-0.20.0-1
> 
> 

The build order I use is something like this:
binutils
gcc (all-gcc && install-gcc)
mingw-headers
mingw-crt
full gcc