ubuntu-riscv Re: ☠ Buildbot (Sourceware): annobin - failed test (failure) (master)

[Mark Wielaard]

Hi Nick,

On Fri, 2024-03-08 at 15:28 +0000, Nick Clifton wrote:
> Could you test something for me please ?  Is it possible to build the
> clang plugin on risc-v, but using the ld.bfd linker ?  ie: does this patch
> work:
> 
> diff --git a/clang-plugin/Makefile.in b/clang-plugin/Makefile.in
> index 1fc45c0..325d1e9 100644
> --- a/clang-plugin/Makefile.in
> +++ b/clang-plugin/Makefile.in
> @@ -14,6 +14,7 @@ PLUGIN_OPTIONS = \
>     -fPIC \
>     -Wall \
>     -O2 \
> +  -flto -fuse-ld=ld.bfd \
>     -g -grecord-gcc-switches \
>     -Wl,--build-id=md5 \
>     -Wl,-z,now

No, clang doesn't seem to like that:

clang: error: invalid linker name in argument '-fuse-ld=ld.bfd'

It does accept -fuse-ld=bfd

But then because we use -flto you still get:

clang++  `llvm-config --cxxflags` \
	-D_FORTIFY_SOURCE=2 -D_GLIBCXX_ASSERTIONS -shared -fPIC -Wall
-O2 -flto -fuse-ld=bfd -g -grecord-gcc-switches -Wl,--build-id=md5 -
Wl,-z,now `llvm-config --ldflags` `llvm-config --system-libs` \
	-I .. -I./.. -lLLVM annobin.cpp -o annobin-for-clang.so
/usr/bin/ld.bfd: /usr/lib/llvm-16/bin/../lib/LLVMgold.so: error loading
plugin: /usr/lib/llvm-16/bin/../lib/LLVMgold.so: cannot open shared
object file: No such file or directory
clang: error: linker command failed with exit code 1 (use -v to see
invocation)

Leaving out -flto does seem to work (without needing any -fuse-ld=).

And then all tests do also pass!

Cheers,

Mark