On 13.03.2013 14:38, Charles Lesire-Cabaniols wrote:
>
>
>
> 2013/3/13 Matthias Goldhoorn <matthias [dot] goldhoorn [..] ...
> <mailto:matthias [dot] goldhoorn [..] ...>>
>
> Hi,
> i'm new to lua and try to follow this example manual:
>
> http://people.mech.kuleuven.be/~mklotzbucher/lua_docs/MANUAL.html
> <http://people.mech.kuleuven.be/%7Emklotzbucher/lua_docs/MANUAL.html>
>
> i builded ocl with the following (thourhgt autoproj):
>
> 5 env_add "LUA_PATH",
> File.join(Autoproj.root_dir,"install","usr","share","lua","5.1","?.lua")
>
> 6 env_add "LUA_CPATH",
> File.join(Autoproj.root_dir,"install","usr","share","lua","5.1","?.so")
>
>
>
> Hi Matthias,
>
> I am afraid env_add is very nice for classical path variables.
> However, LUA_PATH as a specific format with semi-columns. I think
> that's why the ocl library is not found.
The library was not fount found before, since i added the ENVs it
segfault, however i changed my env_add to these env_set:
5 env_set "LUA_PATH", ("\";;;" +
File.join(Autoproj.root_dir,'install','usr','share','lua','5.1','?.lua')
+ "\"")
6 env_set "LUA_CPATH", ("\";;;" +
File.join(Autoproj.root_dir,'install','usr','share','lua','5.1','?.so')
+ "\"")

which results in the (hopefully right result)
[08:44:01 goldhoorn dev-limes]$ printenv | grep LUA
LUA_PATH=;;;/home/goldhoorn/dev-limes/install/usr/share/lua/5.1/?.lua
LUA_CPATH=;;;/home/goldhoorn/dev-limes/install/usr/share/lua/5.1/?.so

But the error remains the same segmentation fault :-(

Here is the segfaulting backtrace::

(gdb) bt
#0 0x00007f0d90d461df in
RTT::internal::OperationCallerC::ret(boost::intrusive_ptr<RTT::base::DataSourceBase>)
() from /home/goldhoorn/dev-limes/install/lib/liborocos-rtt-gnulinux.so.2.6
#1 0x00000000004567a3 in Service_getOperation (L=0x1e9e130) at
/home/goldhoorn/dev-limes/tools/ocl/lua/rtt.cpp:1663
#2 0x0000000000459166 in TaskContext_getOperation (L=0x1e9e130) at
/home/goldhoorn/dev-limes/tools/ocl/lua/rtt.cpp:2298
#3 0x00007f0d902eea24 in luaD_precall (L=L@entry=0x1e9e130,
func=0x1ee1590, nresults=nresults@entry=1) at ldo.c:320
#4 0x00007f0d902f9358 in luaV_execute (L=L@entry=0x1e9e130,
nexeccalls=nexeccalls@entry=1) at lvm.c:591
#5 0x00007f0d902eee7d in luaD_call (L=L@entry=0x1e9e130,
func=0x1ee14b0, nResults=nResults@entry=1) at ldo.c:378
#6 0x00007f0d902eaaa6 in lua_call (L=L@entry=0x1e9e130,
nargs=nargs@entry=1, nresults=nresults@entry=1) at lapi.c:782
#7 0x00007f0d902fac14 in luaL_callmeta (L=L@entry=0x1e9e130,
obj=obj@entry=1, event=event@entry=0x7f0d90305247 "__tostring") at
lauxlib.c:224
#8 0x00007f0d902fc8a7 in luaB_tostring (L=0x1e9e130) at lbaselib.c:398
#9 0x00007f0d902eea24 in luaD_precall (L=L@entry=0x1e9e130,
func=func@entry=0x1ee1490, nresults=1) at ldo.c:320
#10 0x00007f0d902eee34 in luaD_call (L=L@entry=0x1e9e130,
func=0x1ee1490, nResults=nResults@entry=1) at ldo.c:377
#11 0x00007f0d902eaaa6 in lua_call (L=L@entry=0x1e9e130,
nargs=nargs@entry=1, nresults=nresults@entry=1) at lapi.c:782
#12 0x00007f0d902fc1a4 in luaB_print (L=0x1e9e130) at lbaselib.c:39
#13 0x00007f0d902eea24 in luaD_precall (L=L@entry=0x1e9e130,
func=0x1ee1460, nresults=nresults@entry=0) at ldo.c:320
#14 0x00007f0d902f9358 in luaV_execute (L=L@entry=0x1e9e130,
nexeccalls=nexeccalls@entry=1) at lvm.c:591
#15 0x00007f0d902eee7d in luaD_call (L=0x1e9e130, func=0x1ee1450,
nResults=<optimized out>) at ldo.c:378
#16 0x00007f0d902ee0ca in luaD_rawrunprotected (L=L@entry=0x1e9e130,
f=f@entry=0x7f0d902e9730 <f_call>, ud=ud@entry=0x7fffd6a95be0) at ldo.c:116
#17 0x00007f0d902ef02f in luaD_pcall (L=L@entry=0x1e9e130,
func=func@entry=0x7f0d902e9730 <f_call>, u=u@entry=0x7fffd6a95be0,
old_top=<optimized out>, ef=<optimized out>) at ldo.c:464
#18 0x00007f0d902eab41 in lua_pcall (L=0x1e9e130, nargs=0, nresults=-1,
errfunc=<optimized out>) at lapi.c:821
#19 0x000000000047403f in docall (L=0x1e9e130, narg=0, clear=0) at
/home/goldhoorn/dev-limes/tools/ocl/lua/lua-repl.c:112
#20 0x0000000000474676 in dotty (L=0x1e9e130) at
/home/goldhoorn/dev-limes/tools/ocl/lua/lua-repl.c:231
#21 0x0000000000474e5e in pmain (L=0x1e9e130) at
/home/goldhoorn/dev-limes/tools/ocl/lua/lua-repl.c:380
#22 0x00007f0d902eea24 in luaD_precall (L=L@entry=0x1e9e130,
func=func@entry=0x1e9e500, nresults=0) at ldo.c:320
#23 0x00007f0d902eee34 in luaD_call (L=0x1e9e130, func=0x1e9e500,
nResults=<optimized out>) at ldo.c:377
#24 0x00007f0d902ee0ca in luaD_rawrunprotected (L=L@entry=0x1e9e130,
f=f@entry=0x7f0d902e96a0 <f_Ccall>, ud=ud@entry=0x7fffd6a95ea0) at ldo.c:116
#25 0x00007f0d902ef02f in luaD_pcall (L=0x1e9e130,
func=func@entry=0x7f0d902e96a0 <f_Ccall>, u=u@entry=0x7fffd6a95ea0,
old_top=<optimized out>, ef=ef@entry=0) at ldo.c:464
#26 0x00007f0d902eabb7 in lua_cpcall (L=<optimized out>, func=<optimized
out>, ud=<optimized out>) at lapi.c:856
#27 0x0000000000474eae in main_args (L=0x1e9e130, argc=1,
argv=0x7fffd6a96368) at
/home/goldhoorn/dev-limes/tools/ocl/lua/lua-repl.c:411
#28 0x0000000000462fee in OCL::LuaComponent::lua_repl
(this=0x7fffd6a96000, argc=1, argv=0x7fffd6a96368) at
/home/goldhoorn/dev-limes/tools/ocl/lua/LuaComponent.cpp:218
#29 0x00000000004615fd in ORO_main_impl (argc=1, argv=0x7fffd6a96368) at
/home/goldhoorn/dev-limes/tools/ocl/lua/LuaComponent.cpp:359
---Type <return> to continue, or q <return> to quit---
#30 0x000000000046117a in main (argc=1, argv=0x7fffd6a96368) at
/home/goldhoorn/dev-limes/tools/ocl/lua/LuaComponent.cpp:272

> 7
> 8
> 9 cmake_package 'ocl' do ||pkg||
> 10 pkg.define "BUILD_LUA_RTT", "ON"
> 11 pkg.define "BUILD_LUA_RTT_DYNAMIC_MODULES", "OFF"
> 12 pkg.define "BUILD_LUA_TESTCOMP", "ON"
> 13 end
>
>
> i'm not sure about these paths:
>
> export
> RTT_COMPONENT_PATH=/home/mk/tmp/rtt-2.0/lib/orocos:home/mk/src/git/ocl/lua
> export PATH=$PATH:/home/mk/src/git/ocl/lua
>
>
> Could you try to manually define your LUA_PATH before lauching rttlua
> just to check that it works fine?
> According to your path, you should define something like
>
> export LUA_PATH=";;;home/mk/src/git/ocl/lua/modules/?.lua"
>
> Charles.
>
> But i could run the rttlua application and try to follow the manual:
>
> Real-time memory: 517904 bytes free of 524288 allocated.
> 0.002 [ ERROR ][DeploymentComponent::import] No such package or
> directory found in search path: ocl. Search path is:
> 0.003 [ ERROR ][DeploymentComponent::import] :.
> 0.003 [ ERROR ][DeploymentComponent::import] ./ocl
> 0.003 [ ERROR ][DeploymentComponent::import] ./gnulinux/ocl
> OROCOS RTTLua 1.0-beta5 / Lua 5.1.5 (gnulinux)
> Use Ctrl-d to quit.
> > TC = rtt.getTC()
> > require("rttlib")
> > print(TC)
> /home/goldhoorn/dev-limes/install/bin/rttlua: line 20: 3325
> Segmentation fault $cmd $*
>
> I got an segfault here, what i do wong at this point?
>
> Greetings,
> Matthias
>
> --
> Dipl.-Inf. Matthias Goldhoorn
> Space and Underwater Robotic
>
> Universität Bremen
> FB 3 - Mathematik und Informatik
> AG Robotik
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> 28359 Bremen, Germany
>
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> E-Mail:matthias [dot] goldhoorn [..] ... <mailto:matthias [dot] goldhoorn [..] ...>
>
> Weitere Informationen:http://www.informatik.uni-bremen.de/robotik
>
>
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