C/C++ Link errors

[su817200]

Dear Friend,
I got the following link error while Building my code. The main problems are in dos.h and MMSystem.h, portability. I am using a Visual studio express edition 2008 Compiler. Please help


***************************Link errors in DOS.h***********************************
__________________________________________________ ___________________________________
PC.obj : error LNK2001: OSTickDOSCtr = 1;
PC.obj : error LNK2019: pscr = MK_FP(DISP_BASE, 0x0000);
error LNK2019: void *PC_VectGet (INT8U vect)
{
return (getvect(vect));
}
PC.obj : error LNK2019: void PC_VectSet (INT8U vect, void (*isr)(void))
{
//setvect(vect, (void) interrupt (*)(void) isr);
setvect(vect, isr);
}
__________________________________________________ ______________________________________

*****************************Link errors in MMSystem.h*****************************
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeEndPeriod@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeKillEvent@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeSetEvent@20 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeBeginPeriod@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeGetDevCaps@8 referenced in function _OSStartHighRdy
__________________________________________________ ______________________________________
Compiling...
stdafx.cpp
Compiling manifest to resources...
Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.0
Copyright (C) Microsoft Corporation. All rights reserved.
Linking...
PC.obj : error LNK2019: unresolved external symbol _MK_FP referenced in function _PC_DispClrScr
PC.obj : error LNK2001: unresolved external symbol _OSTickDOSCtr
PC.obj : error LNK2019: unresolved external symbol _getvect referenced in function _PC_VectGet
PC.obj : error LNK2019: unresolved external symbol _setvect referenced in function _PC_VectSet
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeEndPeriod@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeKillEvent@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeSetEvent@20 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeBeginPeriod@4 referenced in function _OSStartHighRdy
os_cpu_c.obj : error LNK2019: unresolved external symbol __imp__timeGetDevCaps@8 referenced in function _OSStartHighRdy
EX1L.obj : error LNK2019: unresolved external symbol _random referenced in function _Task
C:\Documents and Settings\ecc04\Desktop\x1\x11\Debug\x11.exe : fatal error LNK1120: 10 unresolved externals
Build log was saved at "file://c:\Documents and Settings\ecc04\Desktop\x1\x11\x11\Debug\BuildLog.h tm"
x11 - 11 error(s), 47 warning(s)
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

Rgds,

[jkmyoung]

You must be missing some header declarations.
In what file do you declare __imp__timeEndPeriod ?
Create an include instruction to that file.

[weaknessforcats]

These are all linker errrors. That means everything compiled correctly so there are no missing headers. What's missing os the library, or libraries, that containe the code for these unresolved items.

Add these libraries to your project as additional linker dependencies by accessing your project properties.