Re: [ANN] luaprompt 0.6

[Dimitris Papavasiliou <dpapavas@...>]

On 06/13/2015 04:46 PM, Dimitris Papavasiliou wrote:
> See what happens when you pass READLINE_DIR=/opt/local.  If the module
> still gets linked against /usr/lib/* libraries, then I'm afraid LuaRocks
> doesn't handle the case where you have multiple libraries with the same
> name installed, correctly.  It probably should pass the explicitly
> specified library paths before the default paths, but from what I see,
> it doesn't.  I'll try to set up a similar case in my system and see what
> happens.

I tried compiling readline from source and installing it in /opt.  If I 
install luaprompt with the usual command

$ sudo luarocks install luaprompt

then the resulting module is linked against the packaged readline, 
installed in /usr/lib/:

dimitris@debian:~/source/luaprompt$ ldd /usr/local/lib/lua/5.1/prompt.so
	linux-vdso.so.1 (0x00007ffe6186c000)
	libreadline.so.6 => /lib/x86_64-linux-gnu/libreadline.so.6 
(0x00007f3f0910b000)
	libhistory.so.6 => /lib/x86_64-linux-gnu/libhistory.so.6 
(0x00007f3f08f02000)
	...

If I set, either just HISTORY_DIR or both HISTORY_DIR and READLINE_DIR 
to /opt with:

$ sudo luarocks install luaprompt  HISTORY_DIR=/opt READLINE_DIR=/opt

I get a module linked correctly against my self-compiled libraries:

dimitris@debian:~/source/luaprompt$ ldd /usr/local/lib/lua/5.1/prompt.so
	linux-vdso.so.1 (0x00007ffea9ca9000)
	libreadline.so.6 => /opt/lib/libreadline.so.6 (0x00007f7056810000)
	libhistory.so.6 => /opt/lib/libhistory.so.6 (0x00007f7056608000)
	...

I'm running Debian though, perhaps something is wrong with LuaRocks on 
OSX.  In particular, I notice that when LuaRocks links the module, it 
doesn't pass the default library directory /usr/lib/ through -rpath, 
only what I've explicitly specified for readline:

gcc -shared -o prompt.so -L/usr/local/lib prompt.o module.o 
-L/usr/lib/x86_64-linux-gnu -L/opt/lib 
-Wl,-rpath,/usr/lib/x86_64-linux-gnu: -Wl,-rpath,/opt/lib: -lreadline 
-lhistory