Bug#922249: Unable to cross-compile Ada programs for ARM

[Matthias Klose <doko@debian.org>]

Control: tags -1 + wontfix

This is known, and fixed in gcc-7 and gcc-8.  Won't fix that for gcc-6, already
removed in testing/unstable.  As a workaround, create the bogus symlinks.

On 13.02.19 19:23, Tamas, Flaviu wrote:
> Package: gnat-6-arm-linux-gnueabihf
> Version: 6.3.0-18cross1
> 
> When I invoke `arm-linux-gnueabihf-gnat make hello.adb`, I
> get the following output:
> 
> # arm-linux-gnueabihf-gnat make hello.adb
> arm-linux-gnueabihf-gnatbind-6 -x hello.ali
> arm-linux-gnueabihf-gnatlink-6 hello.ali
> arm-linux-gnueabihf-gnatlink-6: Couldn't locate arm-linux-gnueabihf-gcc-6-6
> arm-linux-gnueabihf-gnatmake: *** link failed.
> 
> I would instead expect this to produce an excutable instead
> of erroring. `hello.adb` is a basic "hello world":
> 
> with Ada.Text_IO;
> procedure Hello is
> begin
>     Ada.Text_IO.Put_Line("Hello, world!");
> end Hello;
> 
> I'm not sure how to fix this. I would expect that some
> changes to the build script are required so that gnat uses
> "arm-linux-gnueabihf-gcc" instead of
> "arm-linux-gnueabihf-gcc-6-6"
> 
> --------------------------------------------------
> 
> Additionally, there is another bug where
> gnat-6-arm-linux-gnueabihf does not depend on libgnat-6,
> despite libgnat-6 being required on the host:
> 
> # ldd /usr/bin/arm-linux-gnueabihf-gnat
>         linux-vdso.so.1 (0x00007ffc0daeb000)
>         libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe17ae5b000)
>         libgnat-6.so.1 => /usr/lib/x86_64-linux-gnu/libgnat-6.so.1 (0x00007fe17a8d0000)
>         libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe17a531000)
>         libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe17a22d000)
>         /lib64/ld-linux-x86-64.so.2 (0x00007fe17b1dd000)
>         libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe17a016000)
>         libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fe179e12000)
> 
> Before installing the libgnat-6 package,
> arm-linux-gnueabihf-gnat would refuse to run.
> 
> I am using Debian Stretch inside Docker, with all updates
> applied. libc v2.24-11+deb9u3.
>