1. –host=i686-w64-mingw32
./configure --host=i686-w64-mingw32 --prefix=/f/libiconv1.16/libiconv CC=i686-w64-mingw32-gcc CPPFLAGS="-I/usr/local/mingw32/include -Wall" LDFLAGS="-L/usr/local/mingw32/lib"
2. –host=x86_64-w64-mingw32
PATH=/usr/local/mingw64/bin:$PATH
export PATH
./configure --host=x86_64-w64-mingw32 --prefix=/f//libiconv1.16/libiconv \
CC=x86_64-w64-mingw32-gcc \
CPPFLAGS="-I/usr/local/mingw64/include -Wall" \
LDFLAGS="-L/usr/local/mingw64/lib"