#5606 Allow use of `libguile18.h` instead of `libguile.h`.

[Werner LEMBERG]

Allow use of libguile18.h instead of libguile.h.

This is for compilation on MacPorts, and I guess that more distributions
will follow so that guile 1.8 and 2.x can be installed in parallel.

http://codereview.appspot.com/553170043

[Anonymous]

This fails make.

Do I have to do anythin special to test this?

[Werner LEMBERG]

Thanks for testing; it should work out of the box. What exactly fails?

[Jonas Hahnfeld]

Please see the code review, I think the usage of the new define is wrong. Haven't tested locally if that solves the problem, though

[Werner LEMBERG]

Wait, I see the error; will soon update the code.

[Anonymous]

Passes make, make test-baseline and a full make doc

[Anonymous]

Patch on countdown for Nov 22nd

[Anonymous]

Patch counted down - please push

[Werner LEMBERG]

Pushed to staging as

commit 658a69f548afda9bc0107381aa4bd9142a62a9ac
Author: Werner Lemberg wl@gnu.org
Date: Sun Nov 17 16:58:35 2019 +0100

Issue 5606: allow use of `libguile18.h` instead of `libguile.h`

This is for compilation on MacPorts, and I guess that more distributions
will follow so that guile 1.8 and 2.x can be installed in parallel.