[Bug d/91595] Version (Windows) is not defined in GCC D Compiler

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91595

--- Comment #7 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Brecht Sanders from comment #6)
> The patch for gcc/config/i386/t-cygming added a line:
> winnt-d.o: config/winnt-d.c
> I changed it to:
> winnt-d.o: config/i386/winnt-d.c
> 
> Then I got one step further.
> 
> Output is now:
> libtool: compile:  /R/winlibs64_stage/gcc-10-20210320/build_mingw/./gcc/gdc
> -B/R/winlibs64_stage/gcc-10-20210320/build_mingw/./gcc/
> -L/R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/lib
> -L/R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/mingw/lib -isystem
> /R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/include
> -isystem /R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/mingw/include
> -B/R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/bin/
> -B/R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/lib/
> -isystem
> /R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/include
> -isystem
> /R/winlibs64_stage/inst_gcc-10-20210320/share/gcc/x86_64-w64-mingw32/sys-
> include --sysroot=/R/winlibs64_stage/gcc-10-20210320/build_mingw/mingw-w64
> -DDLL_EXPORT -Wall -frelease -O2 -g -nostdinc -I
> ../../../../libphobos/libdruntime -I . -c
> ../../../../libphobos/libdruntime/core/demangle.d -fversion=Shared -o
> core/.libs/demangle.o
> r:\winlibs64_stage\gcc-10-20210320\libphobos\libdruntime\core\stdc\wchar_.d:
> 134:5: error: undefined identifier 'FILE'
>   134 | int fwprintf(FILE* stream, in wchar_t* format, ...);
>       |     ^

What predefined versions are added by the compiler?

./gcc/d21 -v 2>&1 | grep predefs