Dear Sirs

Is there a way to call external lua modules inside luatex. In particular I would like to call gsl libray using a gsl-lua binding (http://www.stefanom.org/devel/gsl-lua)/. 
I'm not talking about gsl-shell that needs luajit.

I'm working in MacOSX with minimals.
My LUAINPUTS are:

 LUAINPUTS  = ".;$TEXINPUTS;$TEXMF/scripts/context/lua//;/usr/local/lib/lua/5.2//",
 CLUAINPUTS      = ".;$SELFAUTOLOC/lib/{context,luatex,}/lua//;/usr/local/lib/lua/5.2//",

>ls /usr/local/lib/lua/5.2
GSLdefs2.lua
alien_c.la
alien_c.so
gsl.lua

The GSL library is called using the Alien. If i try: 

  

 \starttext

      \enabletrackers[resolvers.libraries]

      \startluacode
          print("LUAINPUTS",os.getenv("LUAINPUTS"))

          require("alien") ;
      \stopluacode

 \stoptext

[...]
resolvers       > libraries > registered lua format path 32: /Applications/Context/tex/texmf-osx-64/scripts/context/lua/
resolvers       > libraries > registered lua format path 33: /Applications/Context/tex/texmf/scripts/context/lua/
resolvers       > libraries > registered lua format path 34: /usr/local/lib/lua/5.2
resolvers       > libraries > lua format, checking 34 paths
resolvers       > libraries > lua format, identifying 'alien.lua' using format 'tex'
resolvers       > libraries > lua format, identifying 'alien.lua' using format 'lua'
resolvers       > libraries > locating, level '1', method 'lib variable format', name 'alien'
resolvers       > libraries > registered lib format path 1: .
resolvers       > libraries > registered lib format path 2: /Applications/Context/tex/texmf-osx-64/bin/lib/context/lua/
resolvers       > libraries > registered lib format path 3: /Applications/Context/tex/texmf-osx-64/bin/lib/luatex/lua/
resolvers       > libraries > registered lib format path 4: /Applications/Context/tex/texmf-osx-64/bin/lib/lua/
resolvers       > libraries > registered lib format path 5: /usr/local/lib/lua/5.2
resolvers       > libraries > lib format, checking 5 paths
resolvers       > libraries > lib format, identifying 'alien.so' using format 'lib'
resolvers       > libraries > locating, level '1', method 'lua extra list', name 'alien'
resolvers       > libraries > no extra lua paths defined
resolvers       > libraries > locating, level '1', method 'lib extra list', name 'alien'
resolvers       > libraries > no extra lib paths defined
resolvers       > libraries > locating, level '1', method 'path specification', name 'alien'
resolvers       > libraries > using builtin lua path 1: /usr/local/share/lua/5.2/?.lua
resolvers       > libraries > using builtin lua path 2: /usr/local/share/lua/5.2/?/init.lua
resolvers       > libraries > using builtin lua path 3: /usr/local/lib/lua/5.2/?.lua
resolvers       > libraries > using builtin lua path 4: /usr/local/lib/lua/5.2/?/init.lua
resolvers       > libraries > using builtin lua path 5: ./?.lua
resolvers       > libraries > found, level '1', method 'path specification', name 'alien'
resolvers       > libraries > locating, level '1', method 'already loaded', name 'alien_c'
resolvers       > libraries > locating, level '1', method 'preload table', name 'alien_c'
resolvers       > libraries > locating, level '1', method 'lua variable format', name 'alien_c'
resolvers       > libraries > lua format, checking 34 paths
resolvers       > libraries > lua format, identifying 'alien_c.lua' using format 'tex'
resolvers       > libraries > lua format, identifying 'alien_c.lua' using format 'lua'
resolvers       > libraries > locating, level '1', method 'lib variable format', name 'alien_c'
resolvers       > libraries > lib format, checking 5 paths
resolvers       > libraries > lib format, identifying 'alien_c.so' using format 'lib'
resolvers       > libraries > lib format, 'alien_c.so' found on '/usr/local/lib/lua/5.2/alien_c.so'
resolvers       > libraries > calling loadlib with '/usr/local/lib/lua/5.2/alien_c.so' with init 'luaopen_alien_c'
resolvers       > libraries > locating, level '1', method 'lua extra list', name 'alien_c'
resolvers       > libraries > locating, level '1', method 'lib extra list', name 'alien_c'
resolvers       > libraries > locating, level '1', method 'path specification', name 'alien_c'
resolvers       > libraries > locating, level '1', method 'cpath specification', name 'alien_c'
resolvers       > libraries > using builtin lib path 1: /usr/local/lib/lua/5.2/?.so
resolvers       > libraries > using builtin lib path 2: /usr/local/lib/lua/5.2/loadall.so
resolvers       > libraries > using builtin lib path 3: ./?.so
! LuaTeX error error loading module 'alien_c' from file '/usr/local/lib/lua/5.2/alien_c.so':
dlopen(/usr/local/lib/lua/5.2/alien_c.so, 6): Symbol not found: _luaL_addlstring
  Referenced from: /usr/local/lib/lua/5.2/alien_c.so
  Expected in: flat namespace
 in /usr/local/lib/lua/5.2/alien_c.so
stack traceback:
[C]: in ?
[C]: in function 'cpath specification'
...Context/tex/texmf-context/tex/context/base/l-package.lua:291: in function '?'
...Context/tex/texmf-context/tex/context/base/l-package.lua:318: in function <...Context/tex/texmf-context/tex/context/base/l-package.lua:310>
[C]: in function 'savedrequire'
.../Context/tex/texmf-context/tex/context/base/util-lib.lua:243: in function 'require'
/usr/local/share/lua/5.2/alien.lua:3: in main chunk
[C]: in function 'savedrequire'
.../Context/tex/texmf-context/tex/context/base/util-lib.lua:243: in function 'require'
[string "\directlua "]:5: in main chunk.

[...]

Thanks in advance

Jorge