1) get source & tools
2) apply patches from bug 134113: (as of 03/15/2003)
mingw-gfx2.patch  mingw-mingw-rc.patch        mingw-nss-4.patch
mingw-java.patch  mingw-nasty-winhooks.patch
3) run dos2unix on header files in moztools/include
4) set mozconfig to:
CC=gcc
CXX=g++
AS=as
LD=ld
CPP=cpp
ac_add_options --disable-accessibility
ac_add_options --disable-activex
5) build