Why does gcc say "unknown demangling style `dlang'" ? Do I need GDC for demangling to work ?


85198AB7DE24894B5F742FBD5/libvibe-d_data.a /home/venkat/.dub/packages/vibe-d-0.8.2/vibe-d/utils/.dub/build/library-unittest-linux.posix-x86_64-dmd_2077-B9AE30DD34FDC5ADDE81E208F10DF014/libvibe-d_utils.a -L--no-as-needed -L--demangle=dlang -L-lsqlite3 -L-levent_pthreads -L-levent -L-lssl -L-lcrypto -L-ldl -g
/usr/bin/ld: unknown demangling style `dlang'
collect2: error: ld returned 1 exit status
Error: linker exited with status 1
FAIL .dub/build/webmarx-test-application-unittest-linux.posix-x86_64-dmd_2077-C5DB1ABAED0A1191C5B2ACAFDC70EAC6/ webmarx-test-application executable
dmd failed with exit code 1.
Full exception: object.Exception@source/dub/compilers/compiler.d(115): dmd failed with exit code 1.

On Saturday, 6 January 2018 at 05:44:28 UTC, Venkat wrote:
> Why does gcc say "unknown demangling style `dlang'" ? Do I need GDC for demangling to work ?
>
>
> 85198AB7DE24894B5F742FBD5/libvibe-d_data.a /home/venkat/.dub/packages/vibe-d-0.8.2/vibe-d/utils/.dub/build/library-unittest-linux.posix-x86_64-dmd_2077-B9AE30DD34FDC5ADDE81E208F10DF014/libvibe-d_utils.a -L--no-as-needed -L--demangle=dlang -L-lsqlite3 -L-levent_pthreads -L-levent -L-lssl -L-lcrypto -L-ldl -g
> /usr/bin/ld: unknown demangling style `dlang'
> collect2: error: ld returned 1 exit status
> Error: linker exited with status 1
> FAIL .dub/build/webmarx-test-application-unittest-linux.posix-x86_64-dmd_2077-C5DB1ABAED0A1191C5B2ACAFDC70EAC6/ webmarx-test-application executable
> dmd failed with exit code 1.
> Full exception: object.Exception@source/dub/compilers/compiler.d(115): dmd failed with exit code 1.

I'm not familiar with that flag maybe you have to register ddmangle with it? But failing all else you can pipe the output through ddmangle.

On Saturday, 6 January 2018 at 05:44:28 UTC, Venkat wrote:
> Why does gcc say "unknown demangling style `dlang'" ? Do I need GDC for demangling to work ?

Check your version of binutils with `ld --version`.  It looks like it was added in v2.25:  http://forum.dlang.org/post/rvoqllpimfskvlabprot@forum.dlang.org

I tested with 2.29.1 and it worked fine for me.

Mike

Yes, thanks Mike. I have 2.24 installed. Now I have to figure out how I can upgrade binutils without a distro upgrade. :)