linking errors in 8051 port for ucos-ii

[gemini_v440]

*** error l109: empty relocatable segment

hi ,
I am working on a 8051 port for ucos-ii using keil compiler(version uVision2 V2.20a).i am using john liu code. i removed all the "redefinition errors" and now all the files are being compiled and assembled properly. but now i am getting linking errors like unresolved segment and stuff. i m attaching the john liu code.
plz change the path in ucos_ii.c.
any suggestions/help to remove the linking errors are welcome.

 

[idlebrain]

It simply compiled with 18 warnings in V2.06

Try to rebuild all, When just build there was an error "invalid object file"

Cheers
idlebrain

 

[gemini_v440]

error l109 : empty relocatable segment

hi ,
when i rebuild(all) the john liu code, the following appears in the output window:-

build target 'ex1kc51'
compiling OS_CORE.C...
assembling OS_CORE.src......
compiling OS_MBOX.C...
assembling OS_MBOX.src......
compiling OS_MEM.C...
assembling OS_MEM.src......
compiling OS_Q.C...
assembling OS_Q.src......
compiling OS_SEM.C...
assembling OS_SEM.src......
compiling OS_TASK.C...
assembling OS_TASK.src......
compiling OS_TIME.C...
assembling OS_TIME.src......
compiling OS_CPU_C.C...
assembling OS_CPU_C.src......
assembling OS_CPU_A.ASM......
compiling PC.C...
assembling PC.src......
compiling ex1l.c......
linking.....
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?OSSCHEDLOCK?OS_CORE
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?OSSCHEDUNLOCK?OS_CORE
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_OSSEMACCEPT?OS_SEM
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_OSSEMQUERY?OS_SEM
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?OSDUMMY?OS_TASK
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_OSTASKQUERY?OS_TASK
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_OSTIMEDLYRESUME?OS_TIME
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?OSTIMEGET?OS_TIME
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_OSTIMESET?OS_TIME
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_?C_OSCTXSW?OS_CPU_C
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_?OSTASKDELHOOK?OS_CPU_C
*** WARNING L16:UNCALLED SEGMENT,IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_?PC_ELAPSEDINIT?PC
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?OSSCHED?OS_CORE
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?OSSCHED?OS_CORE
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?OSSCHED?OS_CORE
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?_OSTASKIDLE?OS_CORE
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?_OSSEMACCEPT?OS_SEM
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?_OSTIMEGET?OS_TIME
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?_OSTIMESET?OS_TIME
*** ERROR L109: EMPTY RELOCATABLE SEGMENT
SEGMENT: ?XD?_OUTP?PC
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: OSCTXSW
MODULE:OS_CORE.OBJ(OS_CORE)
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
SYMBOL: OSCTXSW
MODULE:OS_CORE.OBJ(OS_CORE)
ADDRESS:2C0DH
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: OSCTXSW
MODULE:EX1L.OBJ(EX1L)
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
SYMBOL: OSCTXSW
MODULE:EX1L.OBJ(EX1L)
ADDRESS:2A25H
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
SYMBOL: OSCTXSW
MODULE:EX1L.OBJ(EX1L)
ADDRESS:2A27H
TARGET NOT CREATED.


well any suggestions to remove these errors are kindly welcome.