Version:           CVS (using KDE Devel)
Installed from:    Compiled sources

In this example the warning on line 6940 is cut off. Another clue is the warning is in red when warnings are normally black. 

I see this every few compiles. It is much easier to find the problem if the files have lots of errors. In my case I am porting code, a process which generate lots of error messages. I also suspect the problem has something to do with being on an SMP box.

 server/radeon_driver.c:6914: warning: implicit declaration of function `RADEONCP_STOP' 
* server/radeon_driver.c:6928: error: `xf86Screens' undeclared (first use in this function) 
* server/radeon_driver.c:6928: error: `scrnIndex' undeclared (first use in this function) 
* server/radeon_driver.c:6939: warning: implicit declaration of function `RADEONCP_START' 
* server/radeon_driver.c:6940: wa 
* server/radeon_driver.c:7011: warning: implicit declaration of function `DRIGetSAREAPrivate' 
* server/radeon_driver.c:7011: warning: assignment makes pointer from integer without a cast 
* server/radeon_driver.c:7039: warning: implicit declaration of function `fbdevHWAdjustFrame' 
* server/radeon_driver.c:7060: warning: implicit declaration of function `fbdevHWEnterVT' 
* server/radeon_driver.c:7061: error: structure has no member named `PaletteSavedOnVT' 
* server/radeon_driver.c:7071: warning: implicit declaration of function `RADEONDRIResume' 
* server/radeon_driver.c:7089: error: structure has no member named `AdjustFrame'

I recompile exactly the same project, this time the error is on 7116

server/radeon_driver.c:7061: error: structure has no member named `PaletteSavedOnVT' 
* server/radeon_driver.c:7071: warning: implicit declaration of function `RADEONDRIResume' 
* server/radeon_driver.c:7089: error: structure has no member named `AdjustFrame' 
* server/radeon_driver.c:7112: error: structure has no member named `PaletteSavedOnVT' 
* server/radeon_driver.c:7116: warning: implicit d 
* server/radeon_driver.c:7116: error: `scrnIndex' undeclared (first use in this function) 
* server/radeon_driver.c:7135: warning: implicit declaration of function `RADEONDRICloseScreen' 
* server/radeon_driver.c:7151: warning: implicit declaration of function `xf86DestroyCursorInfoRec'

I compiled again and there was no problem.