On 09-05-2012 19:25, Schwab,Wilhelm K wrote:

Even on Ubuntu, the library search is broken. I've had to create symlinks in the vm directory to get Cog to see much of anything. Are you using callbacks? I tried them, with some success, but ultimately went back to using a C/C++ .so to export needed functions. The callbacks were "working" and I could step through them with the debugger ( very encouraging and useful!!!!), but ultimately I would get one of a couple of downstream errors after the callback activity was over, or so it seemed.

Is your image crashing as part of this?

I tried both ways with native (pre-compiled VMs) and VMs that I compiled myself. Native CogVM fails but won't crash. The same with native SqueakVM (traditional VM). CogVM won't compile 64bit mode. SqueakVM compiles 64bit mode and then is capable of calling /usr/lib64 stuff. But most stuff will crash due to problems with pointer sizes. I've got crashes like:

bash-4.2$ LD_LIBRARY_PATH=/usr/lib/nvidia:/usr/lib:$LD_LIBRARY_PATH export LD_LIBRARY_PATH
bash-4.2$ /usr/local/lib/squeak/*/squeakvm

Segmentation fault

36490628 OpenGL>beginFrame
36490536 OGLUnixX11LE>beginFrame
36488076 OpenGL class>example
36487984 BlockClosure>ensure:
36418764 OpenGL class>example
36418672 UndefinedObject>?
35844976 Compiler>evaluate:in:to:notifying:ifFail:logged:
35846456 TextEditor>evaluateSelectionAndDo:
35846364 BlockClosure>on:do:
35846272 TextEditor>evaluateSelectionAndDo:
35846180 TextEditor>evaluateSelection
35846088 PluggableTextMorph>doIt
35845952 TextMorph>handleEdit:
35845736 PluggableTextMorph>handleEdit:
35845644 PluggableTextMorph>doIt
35845528 StringHolder>perform:orSendTo:
35845412 MenuItemMorph>invokeWithEvent:
35845320 BlockClosure>ensure:
35845228 Cursor>showWhile:
35844776 MenuItemMorph>invokeWithEvent:
35844684 MenuItemMorph>mouseUp:
35844592 MenuItemMorph>handleMouseUp:
35844460 MouseButtonEvent>sentTo:
35844368 Morph>handleEvent:
35844276 MorphicEventDispatcher>dispatchDefault:with:
35844184 MorphicEventDispatcher>dispatchEvent:with:
35844092 Morph>processEvent:using:
35844000 MorphicEventDispatcher>dispatchDefault:with:
35843892 MorphicEventDispatcher>dispatchEvent:with:
35843760 Morph>processEvent:using:
35843668 Morph>processEvent:
35843576 MenuMorph>handleFocusEvent:
35843484 HandMorph>sendFocusEvent:to:clear:
35843328 BlockClosure>on:do:
35843236 PasteUpMorph>becomeActiveDuring:
35843116 HandMorph>sendFocusEvent:to:clear:
35843024 HandMorph>sendEvent:focus:clear:
35842932 HandMorph>sendMouseEvent:
35842788 HandMorph>handleEvent:
35842444 HandMorph>processEvents
35842352 WorldState>doOneCycleNowFor:
35842260 SequenceableCollection>do:
35842168 WorldState>handsDo:
35842076 WorldState>doOneCycleNowFor:
35841892 WorldState>doOneCycleFor:
35841800 WorldState>doOneSubCycleFor:
35841708 PasteUpMorph>doOneSubCycle
35821636 MenuMorph>invokeModalAt:in:allowKeyboard:
35821544 MenuMorph>invokeModal:
35821440 MenuMorph>invokeModal
35814024 PluggableTextMorph>yellowButtonActivity:
35813932 ScrollPane>mouseDown:
35813840 Morph>handleMouseDown:
35813748 MouseButtonEvent>sentTo:
35813656 Morph>handleEvent:
35813484 MorphicEventDispatcher>dispatchMouseDown:with:
35813392 MorphicEventDispatcher>dispatchEvent:with:
35813300 Morph>processEvent:using:
35813168 MorphicEventDispatcher>dispatchMouseDown:with:
35813076 MorphicEventDispatcher>dispatchEvent:with:
35812984 Morph>processEvent:using:
35812892 MorphicEventDispatcher>dispatchMouseDown:with:
35812800 MorphicEventDispatcher>dispatchEvent:with:
35812692 Morph>processEvent:using:
35812600 PasteUpMorph>processEvent:using:
35812488 Morph>processEvent:
35812396 HandMorph>sendEvent:focus:clear:
35812304 HandMorph>sendMouseEvent:
35812160 HandMorph>handleEvent:
35812000 HandMorph>processEvents
35811908 WorldState>doOneCycleNowFor:
35811816 SequenceableCollection>do:
35811724 WorldState>handsDo:
35811632 WorldState>doOneCycleNowFor:
35811540 WorldState>doOneCycleFor:
35811448 PasteUpMorph>doOneCycle
31204620 Project class>spawnNewProcess
31201020 BlockClosure>newProcess

But it was expected since it was a 64bit VM pointing to 32bit libraries...
When LD_LIBRARY_PATH is left unchanged, then it won't crash and it won't load libraries.