On Sunday, 22 September 2019 at 10:29:24 UTC, Stefan Frijters
wrote:
Hi Johannes,
Thank you for the feedback. I've posted some more below so we
can try to find out what I'm doing wrong. I've added some blank
lines here and there to make things more readable, but it's all
very spammy I'm afraid.
[...]
Well, I've made some progress:
* I still don't know what causes libtool to misbehave in
parallel, but I've forced libphobos to be built with -j1, so
that's at least a working workaround that doesn't slow down the
rest of the build.
* The nixpkgs wrappers for gcc introduce the -idirafter flag,
which is not accepted by gdc. It looks like this causes the check
for the '-fPIC' flag to fail, and the flag to be dropped. This is
the cause of the linker error for the shared libs. I've hacked
around for a bit and got rid of the flag at the point of the
check, so libphobos now builds correctly (but still with a bunch
of warnings).
* I've added some nix code to generate a wrapper for gdc, like
the ones that are generated for the rest of the GNU compiler
family.
With these changes I can now build gdc + libraries and I've
successfully built the example on the dlang.org front page from a
nix shell.
The PR will need some reviewing from nixpkgs folks for sure since
I did some nasty things.
