[PATCH] Makefile: do not call ar directly

[Hoël Bézier]

Hi!

I’ve now improved support for lzip compression in ./play.it and it awaits 
approval to be merged, thanks to you.

Testing my contribution, I found out that plzip and tarlz are not considered 
stable on Gentoo, although they are on Debian. This might be because of a “bug” 
in lzlib, as reported here: https://bugs.gentoo.org/721916 The bug report 
targets lzlib-1.11, but I’ve been able to reproduce it with lzlib-1.12.

The issue is lzlib Makefile calls ar directly, instead of using the AR 
variable. This is undesirable on Gentoo to prevent issues while 
cross-compiling, for example. I’ve seen that the Makefile handles CC correctly 
however, so all one needs to do is to write some similar instructions for AR.

Since this does not seem too hard to fix, I figured I would do it myself. So 
I’ve attached the patch I wrote. I’ve tested this, and this seems to do the 
trick.

Of course, the ebuild used to compile the library on Gentoo also needs to be 
patched, and if I’m not mistaken, you’re the maintainer, so I’ve attached my 
patch to the ebuild as well. If you’re not, well tell me and I’ll open an issue 
on Gentoo bugtracker myself. :)

Any comments are welcome,
Hoël

undefine-ar.patch
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lzlib-1.12-ebuild.patch
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