Re: How to make a working ld in guix pure environment?

[Fis Trivial]

Ludovic Courtès writes:

> Hello,
>
> Fis Trivial <address@hidden> skribis:
>
>> I tried to use ld in guix pure environment, tested with bintuils,
>> gcc-toolchain, ld-wrapper, and none of them work.
>>
>> Take the following trivial snippy (not opencl related) as an example:
>>
>> // main.c
>> #include <math.h>
>>
>> int main()
>> {
>>   log1p(32);
>> }
>>
>>
>> To build it, one would do something similar to `ld -lm main.o` after
>> compilation. But I got an error saying "ld: cannot find -lm".
>
> You would need to use ld-wrapper, not ld, so that ld-wrapper sets the
> RUNPATH appropriately.
>
> But this won’t fix the problem above.  The problem above is that glibc
> is not in the search path.  To fix that, a simple fix would be to add a
> wrapper atop ld-wrapper (!) that would add “-L /gnu/store/…-glibc/lib”.
>
> Perhaps there are more elegant ways to achieve it though.  How is ld
> invoked?  Would it work to add that -L flag directly in the code that
> invokes ld?
>

That would require me to look into OpenCL's
implementations. Heterogeneous is interesting to me, I guess it would be
a fun thing to do. I will try to hack it once I got the time, unless
someone else beat me to it.

> HTH!
>
> Ludo’.

Thanks.