Need support for upgrade source code from ARM Cross studio version 1.7 to 4.2 Version

Hi Team,

My source code compiled in 1.7 version without any issues and same source code compiling in 4.2 version (attached version number screen short) below errors are observed.Please any one help on this issue.

Error Logs :

Building 'avatar_gc_gui' from solution 'avatar_gc_gui' in configuration 'ARM Flash Debug'

Compiling 'avtar_gc_main.c'

unknown type name ‘U4BYTE’

unknown type name ‘U4BYTE’

unknown type name ‘U4BYTE’

In function ?funcReadDataFromSlave?:

implicit declaration of function ‘func_mastreaddata’ [-Wimplicit-function-declaration]

In function ?ClearAllEPCs?:

implicit declaration of function ‘DispPress’; did you mean ‘isless’? [-Wimplicit-function-declaration]

In function ?DispDet?:

implicit declaration of function ‘DrawStr’ [-Wimplicit-function-declaration]

In function ?DispInj?:

implicit declaration of function ‘ClearChar’; did you mean ‘clearerr’? [-Wimplicit-function-declaration]

conflicting types for ‘DispPress’

previous implicit declaration of ‘DispPress’ was here

In function ?SelInjType?:

‘return’ with no value, in function returning non-void

declared here

In function ?SelDetType?:

‘return’ with no value, in function returning non-void

declared here

In function ?main?:

implicit declaration of function ‘func_GCinit_scrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘msDelay’; did you mean ‘SubDelay’? [-Wimplicit-function-declaration]

implicit declaration of function ‘DisplayClear’ [-Wimplicit-function-declaration]

implicit declaration of function ‘AutoDignst’ [-Wimplicit-function-declaration]

implicit declaration of function ‘InitialScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘WarnMesg’ [-Wimplicit-function-declaration]

implicit declaration of function ‘InitDetScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘InitInjScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘ReadUInt’; did you mean ‘ReadUInit’? [-Wimplicit-function-declaration]

implicit declaration of function ‘MoveCursor’ [-Wimplicit-function-declaration]

implicit declaration of function ‘ReadInt’; did you mean ‘ReadInit’? [-Wimplicit-function-declaration]

implicit declaration of function ‘DisFlamCal’; did you mean ‘isnormal’? [-Wimplicit-function-declaration]

‘S2BYTE’ undeclared (first use in this function); did you mean ‘C2BTR’?

each undeclared identifier is reported only once for each function it appears in

expected ‘;’ before ‘gfloatTempVal’

‘U1BYTE’ undeclared (first use in this function); did you mean ‘S2BYTE’?

expected ‘]’ before ‘gfloatTempVal’

expected ‘;’ before ‘gfloatTempVal’

implicit declaration of function ‘fConfigScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fMaxTempScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fReadyScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fOvenScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fCapPtvScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘EPCscr’ [-Wimplicit-function-declaration]

implicit declaration of function ‘GetInjID’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fSDPACKScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fVOEPCScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fVOCalActPress’; did you mean ‘VICAddress’? [-Wimplicit-function-declaration]

implicit declaration of function ‘DisplayActflow’ [-Wimplicit-function-declaration]

implicit declaration of function ‘GetDetID’; did you mean ‘GetKey’? [-Wimplicit-function-declaration]

implicit declaration of function ‘Getmaxdetflow’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fTCDScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fECDScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fDIDPIDScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘EventScr’ [-Wimplicit-function-declaration]

implicit declaration of function ‘fSplitScrn’ [-Wimplicit-function-declaration]

implicit declaration of function ‘Splitscr’ [-Wimplicit-function-declaration]

implicit declaration of function ‘SummaryInjector’ [-Wimplicit-function-declaration]

implicit declaration of function ‘SummaryDetector’ [-Wimplicit-function-declaration]

implicit declaration of function ‘summary’ [-Wimplicit-function-declaration]

conflicting types for ‘FuncSDRAMTest’

previous declaration of ‘FuncSDRAMTest’ was here

Compiling 'GuiLib.c'

Compiling 'GuiVar.c'

Compiling 'GuiStruct.c'

Build failed