bug#55657: libgccjit is unusable

[John Kehayias]

Hi,

------- Original Message -------
On Saturday, August 6th, 2022 at 1:53 AM, Liliana Marie Prikler 
<liliana.prikler@gmail.com> wrote:

> Pardon that, it's an artifact from trying to fetch 28.1.90 via url-
> fetch and failing. Note that the hash is the one for 28.1.

On Andrew's channel I can change the version/commit/hash to 28.1 and it builds 
fine. Though this is using a git checkout at the 28.1 tag commit, but I don't 
think that matters here? (Emacs runs too, but only tried in guix shell and just 
to see it opens, didn't see if it compiles anything.)

And yet with your code I cannot. I tried using the phase from Andrew instead of 
your code, tried adding gcc to the native-inputs to match Andrew, used gcc-11 
with libgccjit-11, ...still the same configure failure on the libgccjit test 
program: can't find libgccjit.so

Weird.

Adding just the libgccjit library path to LD_LIBRARY_PATH makes configure find 
libgccjit, but then fails to find libx11 in that same libgccjit test program. 
Instead, making LD_LIBRARY_PATH=LIBRARY_PATH fixes the configure and it finally 
fails on the runpath validation. Maybe cause of messing with LD_LIBRARY_PATH or 
could use the patch Andrew has? Anyway, wasn't looking into this.

I thought I had a similar problem with the test program you had started with, 
but in the end just the LIBRARY_PATH tweak was needed. I wish I could remember 
the combination of things I tried that also had it failing to find libgccjit. 
Or perhaps it was something libgccjit was linked to, but I hadn't explored?

So. I tried to see what was different between your and Andrew's code and I'm 
not seeing what it could be. There must be some subtle difference we're 
missing? Seems we have all the ingredients and a known working example.

John