Problem with compilation

[Slawomir Makaruk]

Hello!
I'm a new user of wine and new subscriber and I have some problem with 
compilation. Here is some last line from message of wineinstaller:

gcc -I. -I. -I../../include -I../../include  -g -O2 -Wall 
-mpreferred-stack-boundary=2 -fPIC -D__WINE__ -D_REENTRANT 
-I/usr/X11R6/include -o dosmod ./dosmod.c
./dosmod.c:44: warning: `struct vm86plus_struct' declared inside parameter 
list
./dosmod.c:44: warning: its scope is only this definition or declaration, 
which
is probably not what you want.
./dosmod.c: In function `bad_handler':
./dosmod.c:136: invalid use of undefined type `struct vm86plus_struct'
./dosmod.c:136: invalid use of undefined type `struct vm86plus_struct'
./dosmod.c: In function `send_enter_reply':
./dosmod.c:172: sizeof applied to an incomplete type
./dosmod.c:172: sizeof applied to an incomplete type
./dosmod.c: In function `main':
./dosmod.c:201: warning: implicit declaration of function `waitpid'
./dosmod.c:288: sizeof applied to an incomplete type
./dosmod.c:288: sizeof applied to an incomplete type
./dosmod.c:290: warning: passing arg 2 of `vm86plus' from incompatible 
pointer type
./dosmod.c: At top level:
./dosmod.c:123: storage size of `VM86' isn't known
make[1]: *** [dosmod] Błąd 1
make[1]: leaving directory `/tmp/wine-20010731/loader/dos'
make: *** [loader/dos/dosmod] Błąd 2

Compilation failed, aborting install.

What is mean and what to do?
I have a gcc 2.95.3

Slawomir Makaruk