anyone able to use '-cov' at all on non-trivial project? (link error ....)

[%u]

Hi,

I just wonder if anyone able to use '-cov' at all on non-trivial project?

On small files, it works. But when I try to compile with '-cov' on a sizable
project, I have the following link error:

all.o:(.data+0x1464): undefined reference to `_D3std1c6stdlib12__ModuleInfoZ'
all.o:(.data+0x14bc): undefined reference to `_D3std1c6stdlib12__ModuleInfoZ'
all.o:(.data+0x14e0): undefined reference to `_D3std1c6stdlib12__ModuleInfoZ'
all.o:(.data+0x150c): undefined reference to `_D3std1c6string12__ModuleInfoZ'
all.o:(.data+0x1528): undefined reference to `_D3std1c6string12__ModuleInfoZ'

Anyone one know how to fix this?

Thanks.