[LLVMdev] opt refuses to load a pass

[Pablo Barrio]

Hi,

I'm having problems while using a custom pass with opt. The pass 
compiles and links just fine but, when I try to use it with opt:

opt -load LLVMmyPass.so -my-flag -f aes.bc -o aes_bb.bc

opt refuses to load it with the following error:

Error opening 'LLVMmyPass.so': LLVMmyPass.so: undefined symbol: 
_ZN4llvm9DebugFlagE
   -load request ignored.

and then complains that the flag "-my-flag" cannot be found. A quick 
look at google makes me think that the missing symbol belongs to 
libLLVMSupport.a, which should be already linked to opt, shouldn't it? 
Somebody suggested me that perhaps LLVM and my pass were compiled with 
different options (one in Release and another in Debug, for instance) 
but I double-checked and both are in Debug mode.

Can anyone spot the problem here? Thanks ahead!

-- 
Pablo Barrio
Dpto. Ing. Electrónica - E.T.S.I. Telecomunicación
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Avda. Complutense s/n, 28040 Madrid
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@: pbarrio at die.upm.es