"undefined symbol" error

Hi，

I encountered below errors when building ccs project and don't know how to resolve.

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**** Build of configuration Debug for project sv04ccs ****
C:\Program Files\Texas Instruments\ccsv5\utils\gmake\gmake -k all
'Building target: sv04.out'
'Invoking: C6000 Linker'
"C:/Program Files/Texas Instruments/C6000 Code Generation Tools 7.2.4/bin/cl6x" -@"ccsLinker.opt" -o "sv04.out"

 undefined          first referenced 
 symbol                 in file 
 ---------              ---------------- 
Osal_paMtCsEnter C:\Program Files\Texas Instruments\pdk_C6678_1_0_0_20\packages\ti\drv\pa\lib\ti.drv.pa.ae66<pa.oe66>
Osal_paMtCsExit C:\Program Files\Texas Instruments\pdk_C6678_1_0_0_20\packages\ti\drv\pa\lib\ti.drv.pa.ae66<pa.oe66>

Sa_chanClose C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
>> Compilation failure
Sa_chanGetBufferReq C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_chanGetID C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_close C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_init.oe66>
Sa_create C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_downloadImage C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_getBufferReq C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_resetControl C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
Sa_start C:\Program Files\Texas Instruments\nwal_c66x_1_0_0_1\ti\drv\nwal\lib\ti.drv.nwal.sa.ae66<nwal_sec.oe66>
getRfcAPI C:\Program Files\Texas Instruments\mcsdk_video_2_0_0_10\components\ti\mas\vppu\ce66\vppu_c.ae66<vppu.oe66>
rcuContext C:\Program Files\Texas Instruments\mcsdk_video_2_0_0_10\components\ti\mas\rcu\ce66\rcu_rfc355x_c.ae66<rcutxrx.oe66>
rcuRtcpContext C:\Program Files\Texas Instruments\mcsdk_video_2_0_0_10\components\ti\mas\rcu\ce66\rcu_rfc355x_c.ae66<rcurtcp.oe66>
rfcGetMaxInstSize C:\Program Files\Texas Instruments\mcsdk_video_2_0_0_10\components\ti\mas\vppu\ce66\vppu_c.ae66<vppuinit.oe66>
siu_new_vppu ./siuVctInit.obj

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "sv04.out" not built
gmake: *** [sv04.out] Error 1
gmake: Target `all' not remade because of errors.

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