rtld-Rules:40: *** This makefile is a subroutine of elf/Makefile not to be used directly. when building glibc

[Adhemerval Zanella]

> On 6 Nov 2023, at 15:30, 7dog123 via Libc-help <libc-help@sourceware.org> wrote:
> 
> I'm trying to build glibc on cygwin but I keep on getting this error
> 
>    [ALL  ]      rtld-Rules:40: *** This makefile is a subroutine of
> elf/Makefile not to be used directly.  Stop.
>    [ALL  ]      make[4]: Leaving directory '/build/src/glibc-2.38/elf'
>    [ERROR]      make[3]: *** [Makefile:1315:
> /build/x86_64-pc-linux-gnu/build/build-libc/multilib/elf/rtld-libc.a] Error
> 2
>    [ERROR]      make[3]: *** Waiting for unfinished jobs....
>    [ALL  ]      make[3]: Leaving directory '/build/src/glibc-2.38/elf'
>    [ERROR]      make[2]: *** [Makefile:484: elf/subdir_lib] Error 2
>    [ALL  ]      make[2]: Leaving directory '/build/src/glibc-2.38'
>    [ERROR]      make[1]: *** [Makefile:9: all] Error 2
>    [ALL  ]      make[1]: Leaving directory
> '/build/x86_64-pc-linux-gnu/build/build-libc/multilib'
> 
> I'm building it through crossingtool-ng.
> 
> Here's the configuration it used:
> 
>    /build/x86_64-pc-linux-gnu/src/glibc/configure --prefix=/usr
> --build=x86_64-build_pc-cygwin --host=x86_64-pc-linux-gnu
> --cache-file=/build/x86_64-pc-linux-gnu/build/build-libc/multilib/config.cache
> --without-cvs --disable-profile --without-gd
> --with-headers=/x-tools/}x86_64-pc-linux-gnu/x86_64-pc-linux-gnu/sysroot/usr/include
> --disable-debug --disable-sanity-checks --enable-kernel=6.5.5
> --with-__thread --with-tls --enable-shared --enable-add-ons=no

Cygwin it is not a supporter ABI. The glibc currently only supports Linux and Hurd.