apt-cyg install gcc-core make autoconf automake zlib-devel pkg-config pcre libpcre-devel lzma liblzma-devel liblzma-devel git
git clone https://github.com/ggreer/the_silver_searcher.git cd the_silver_searcher sed -i -e 's/entry->d_reclen/sizeof(struct dirent)/g' ./src/scandir.c make -f Makefile.w32
生成された ag.exe を任意の場所に置くこと。