$ ./configure
checking awk... awk
detecting OS... MINGW
checking build system type... x86_64-w64-mingw32
checking host system type... x86_64-w64-mingw32
checking universal build... no
checking build cc... gcc
checking host cc... gcc
checking build c++... g++
checking host c++... g++
checking host windres... windres
checking strip... disabled
checking builtin depend... yes
checking makedepend... disabled
detecting cpu-type... 64 bits
detecting SSE... found
checking static... yes
checking unicode... yes
using debug level... no
using desync debug level... no
using link time optimization... no
checking OSX sysroot... not OSX, skipping
checking allegro... not found
checking sdl... not found
checking COCOA... not OSX, skipping
checking GDI video driver... found
checking dedicated... not selected
checking console application... disabled (only used when forced)
checking network... found
checking squirrel... found
checking translator... no
checking assert... enabled
checking zlib... found
checking liblzma... found
checking lzo2... not found
WARNING: liblzo2 was not detected or disabled
WARNING: OpenTTD doesn't require liblzo2, but it does mean that
WARNING: loading old savegames/scenarios will be disabled.
configure: error: no liblzo2 detected
 If you want to compile without liblzo2 use --without-liblzo2 as parameter