problem building gcc

[collinr@xxxxxxxxxxxxxxx]

Good morning,
I had a problem while trying to build GCC (version 4.3.1) with Cygwin.
I made "./configure" in GCC subdirectory (OK) then
I made "make all"    in GCC subdirectory (KO).
It is said the file build/genmodes.exe is missing. I saw on the  
Internet I am not the first one to have this problem, but I did not  
find the solution, could you tell me what to do?

I have an another problem in gcc-4.3.1-directory :
"./configure" works, but command "make" encounter errors. The trace of  
command "make" shows a lot of "undefined reference to" (about 100).

Do I need to make something in gcc-4.3.1 directory to build gcc, or I  
can do everything in gcc subdirectory?


Regards,
Rémi Collin