techouse@Mk2:/x264$ sudo ./configure --host=i586-mingw32msvc --extra-cflags=-I/pthreads
Platform:   X86
System:     MINGW
avis input: yes
mp4 output: no
pthread:    no
gtk:        no
debug:      no
gprof:      no
PIC:        no
shared:     no
visualize:  no

You can run 'make' or 'make fprofiled' now.
techouse@Mk2:/x264$ sudo ./configure --host=i586-mingw32msvc --extra-cflags=-I/usr/i586-mingw32msvc/include
Platform:   X86
System:     MINGW
avis input: yes
mp4 output: no
pthread:    no
gtk:        no
debug:      no
gprof:      no
PIC:        no
shared:     no
visualize:  no

You can run 'make' or 'make fprofiled' now.
techouse@Mk2:/x264$