Link errors occur when building a model with class state machines: "Undefined first referenced symbol/unresolved external symbol: RTstruct_encode and RTstruct

Troubleshooting

Problem

Link errors occur when building a model with class state machines: "Undefined first referenced symbol/unresolved external symbol: RTstruct_encode and RTstruct_decode"

Resolving The Problem

SYMPTOM:

When building a Rose RealTime model with class state machines, link errors involving RTstruct_encode and RTstruct_decode occur, similar to the following:

Target = NT40T.x86-VisualC++-6.0:

 
!> Linking RegenMgr1.EXE
Hardware.OBJ : error LNK2001: unresolved external symbol "int __cdecl RTstruct_encode(struct RTObject_class const *,void const *,class RTEncoding *)" (?RTstruct_encode@@YAHPBURTObject_class@@PBXPAVRTEncoding@@@Z)
RegenMgr.OBJ : error LNK2001: unresolved external symbol "int __cdecl RTstruct_encode(struct RTObject_class const *,void const *,class RTEncoding *)" (?RTstruct_encode@@YAHPBURTObject_class@@PBXPAVRTEncoding@@@Z)
Hardware.OBJ : error LNK2001: unresolved external symbol "int __cdecl RTstruct_decode(struct RTObject_class const *,void *,class RTDecoding *)" (?RTstruct_decode@@YAHPBURTObject_class@@PAXPAVRTDecoding@@@Z)
RegenMgr.OBJ : error LNK2001: unresolved external symbol "int __cdecl RTstruct_decode(struct RTObject_class const *,void *,class RTDecoding *)" (?RTstruct_decode@@YAHPBURTObject_class@@PAXPAVRTDecoding@@@Z)
RegenMgr1.EXE : fatal error LNK1120: 2 unresolved externals
NMAKE : warning U4010: 'RegenMgr1.EXE' : build failed; /K specified, continuing ...
NMAKE : warning U4011: 'RTcompile' : not all dependents available; target not built
NMAKE : fatal error U1077: 'rtperl' : return code '0x100'
Stop.
Error: Build failed status 2
Build failed.

Target = SUN5T.sparc-gnu-2.95.1:

!> Linking RegenMgr1
Undefined			first referenced
symbol  			    in file
RTstruct_encode(RTObject_class const *, void const *, RTEncoding *)Hardware.o
RTstruct_decode(RTObject_class const *, void *, RTDecoding *)Hardware.o
ld: fatal: Symbol referencing errors. No output written to RegenMgr1
collect2: ld returned 1 exit status
*** Error code 1
The following command caused the error:
rtperl "/RoseRT6.4.356.0-GA-04/RoseRT/C++/TargetRTS/codegen/rtlink.pl" -vendor gnu -exe "RegenMgr1" -componentname RegenMgr1 -- \
	g++  Hardware.o  Main.o  RegenMgr.o  RTSystem/RegenMgr1.o -o RegenMgr1
make: Warning: Target `RTcompile' not remade because of errors
Current working directory /home/RegenMgr1/build
Error: Build failed status ffffffff
Build failed.

CAUSE: RTstruct_encode and RTstruct_decode link errors occur when the "GenerateDescriptor" field is incorrectly set to "True" in the "C++ TargetRTS" tab of a class specification. RESOLUTION: To overcome the link errors, set the "GenerateDescriptor" field to "False" in the "C++ TargetRTS" tab in the offending class specifications, and rebuild the model.

[{"Product":{"code":"SSSHKL","label":"Rational Rose RealTime"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"--","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"2002.05.20","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Historical Number

152772907

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Document Information

Modified date:
16 June 2018

UID

swg21131968

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