Re: [PATCH 1/1] gnu: lua: Build with dynamic library support.

[Ludovic Courtès]

Leo Famulari <address@hidden> skribis:

> Notably, this enables the use of dynamic libraries with Lua.

A better subject line for the commit would be:

  gnu: lua-5.2: Build shared libraries.

AFAICS, the problem is only with Lua 5.2:

--8<---------------cut here---------------start------------->8---
$ ls $(guix build lua-5.1)/lib
liblua.a  liblua.so  liblua.so.5.1  lua
$ ls $(guix build lua-5.2)/lib
liblua.a  lua  pkgconfig
--8<---------------cut here---------------end--------------->8---

Thus I would suggest leaving ‘lua-5.1’ unchanged.

> * gnu/packages/lua.scm (lua, lua-5.1)[arguments]: Set the make flags
>   properly for each version of lua.

[...]

> +++ b/gnu/packages/lua.scm
> @@ -24,6 +24,7 @@
>    #:use-module (guix packages)
>    #:use-module (guix download)
>    #:use-module (guix build-system gnu)
> +  #:use-module (guix utils)

Looks like this line is not needed, is it?

>         #:phases (alist-replace
>                   'build
> -                 (lambda _ (zero? (system* "make" "CFLAGS=-fPIC" "linux")))
> +                 (lambda _ (zero? (system* "make" "MYCFLAGS=-fPIC" "linux")))

I just tried and AFAICS this line has no effect: Lua 5.2 still lacks
liblua.so.  Am I missing something?

> +          `(modify-phases ,lua-phases
> +             (replace
> +               'build
> +               (lambda _
> +                 (and
> +                  (zero? (system* "make" (string-append
> +                                    "MYCFLAGS="
> +                                    (string-join '("-fPIC "
> +                                                   "-DLUA_USE_LINUX "
> +                                                   "MYLIBS=-Wl,-E "
> +                                                   "-ldl -lreadline "
> +                                                   "-lhistory -lncurses")))
> +                                    "linux")))))))))))

This is in ‘lua-5.1’, so it’s unnecessary AFAICS.

> @@ -89,8 +106,8 @@ for configuration, scripting, and rapid prototyping.")
>                                    version ".tar.gz"))
>                (sha256
>                 (base32 
> "0ydxpqkmsn2c341j4r2v6r5r0ig3kbwv3i9jran3iv81s6r6rgjm"))
> -           (patches (list (search-patch "luajit-symlinks.patch")
> -                          (search-patch "luajit-no_ldconfig.patch")))))
> +              (patches (list (search-patch "luajit-symlinks.patch")
> +                             (search-patch "luajit-no_ldconfig.patch")))))

Unnecessary too.

Thanks for looking into it!

Ludo’.