Description of problem:    
gccmakedep does not recognize -i*prefix* gcc options    
    
Version-Release number of selected component (if applicable):    
rpm -q -f `which gccmakedep`    
xorg-x11-devel-6.8.2-37    
rpm -q gcc    
gcc-4.0.1-4.fc4
System: Fedora Core 4   
    
Steps to Reproduce:    
mkdir depend    
cd depend    
echo "#include <myfile.h>" > test.c    
touch ../myfile.h    
gccmakedep -f - -iprefix ../ -iwithprefix . test.c    
gcc -M -iprefix ../ -iwithprefix . test.c    
     
Actual results:    
$ gccmakedep -f - -iprefix ../ -iwithprefix . test.c    
Unknown option '-iprefix' ignored    
Unknown option '-iwithprefix' ignored    
test.c:1:20: error: myfile.h: No such file or directory    
    
Expected results:    
$ gccmakedep -f - -iprefix ../ -iwithprefix . test.c    
test.o: test.c .././myfile.h    
    
Additional info:    
Workaround:    
use directly "gcc -M"     
   
There are numerous 'include' options that ought to be recognized too 
-nostdinc, -iquote, -idirafter 

Search keywords:
-iprefix, -iwithprefix, -iwithprefixbefore