Error while compiling Pidgin 2.4.0 with Cygwin

[Daniel Atallah]

2008/4/19 dayanand kumbhar <dayanand.kumbhar at gmail.com>:
> I was trying to compile pidgin2.4.0 using cygwin . While doing make -f
> Makefile.mingw install ,
> it gives an error
>
> /home/D/pidgin-2.4.0/libpurple/buddyicon.c:154: undefined reference to
> `__errno'

Are you using gcc from mingw or cygwin?
What is the output from `which gcc` and `gcc --version`?