Re: luaraocks build of LPeg 12.1 under Lua 5.3.0-alpha fails to run

[Philipp Janda <siffiejoe@...>]

Am 24.08.2014 um 15:03 schröbte Dirk Laurie:
> LPeg 12.1 buils under Lua 5.3.0-alpha but does not run.
>
> $ lua -l lpeg
> lua: error loading module 'lpeg' from file '/usr/local/lib/lua/5.3/lpeg.so':
>      /usr/local/lib/lua/5.3/lpeg.so: undefined symbol: lua_equal
> stack traceback:
>      [C]: in ?
>      [C]: in function 'require'
>      [C]: in ?
>
> Just before that run, I did a successful 'make install' of Lua 5.3.0 and
> a successful 'luarocks install lpeg'.
>
>
> In my opinion the current LuaRocks setup is seriously broken when there
> is any ambiguity whatsoever as far as the Lua version is concerned. The
> main reason why I say so is that it ferrets about in $HOME/bin, discovers
> that I have a ~/lua53 and prefers that over what `/usr/bin/env lua` would
> call. Where does LuaRocks think it is going to find the correct include files
> and libraries for that?

And I guess that's the problem: It probably used the Lua include files 
from `/usr/include`. So the `lpeg.so` you installed for Lua 5.3 is built 
for some other Lua version.
The `configure` script which does all that auto-detecting should 
probably do more sanity checks and verify that the versions match ...

> Moreover, the <version> parameter on `luarocks install` is not documented
> beyond a bare mention by `luarocks help install`. It does not what I have
> so far managed to guess.

It installs a specific version of a module. What did you guess?


Philipp