$ ./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... found

checking libxdg-basedir... not found

checking libpng... not found

checking freetype2... not found

checking libfontconfig... WIN32, skipping

checking icu-lx... not found

checking icu-i18n... not found

checking psp-config... not PSP, skipping

checking libtimidity... not found

checking direct-music... not found

checking sort... sort

checking endianness... AUTO

suppress language errors... no

checking stripping... skipped

checking distcc... no (only used when forced)

checking ccache... no (only used when forced)

checking grfcodec... not found

checking nforenum... not found

checking OSX application bundle... not OSX, skipping

checking revision... no detection

WARNING: there is no means to determine the version.

WARNING: please use a subversion, mercurial, or git checkout of OpenTTD.

WARNING: you can only join game servers that have been compiled without

WARNING:   version detection.

WARNING: there is a great chance you desync.

WARNING: USE WITH CAUTION!

checking iconv... not OSX, skipping

personal home directory... OpenTTD

shared data directory... none

installation directory... /

icon theme directory... none

manual page directory... none

menu item directory... none

using CFLAGS_BUILD...  -Wall -Wno-multichar -Wsign-compare -Wundef -Wwrite-strings -Wpointer-arith -W -Wno-unused-parameter -Wredundant-decls -Wformat=2 -Wformat-security -Winit-self -fno-strict-aliasing -Wcast-qual -fno-strict-overflow -Wnon-virtual-dtor -Wno-free-nonheap-object -DMINGW -D_FORTIFY_SOURCE=2 -O1

using CXXFLAGS_BUILD...  -flifetime-dse=1 -std=gnu++14

using LDFLAGS_BUILD...  -static-libgcc -static-libstdc++

using CFLAGS... -O2 -fomit-frame-pointer  -Wall -Wno-multichar -Wsign-compare -Wundef -Wwrite-strings -Wpointer-arith -W -Wno-unused-parameter -Wredundant-decls -Wformat=2 -Wformat-security -Winit-self -fno-strict-aliasing -Wcast-qual -fno-strict-overflow -Wnon-virtual-dtor -Wno-free-nonheap-object -DMINGW -D_FORTIFY_SOURCE=2 -DWITH_SSE -mno-ms-bitfields -DWIN -DWITH_ZLIB -IR:/msys64/mingw64/include   -DWITH_LZMA -IR:/msys64/mingw64/include   -DLZMA_API_STATIC -DWITH_LZO -D_SQ64 -IR:/ottd/src/3rdparty/squirrel/include -DUNICODE -D_UNICODE -DENABLE_NETWORK -DWITH_PERSONAL_DIR -DPERSONAL_DIR=\\"OpenTTD\\" -DGLOBAL_DATA_DIR=\\"/usr/local/share/games/openttd\\"

using CXXFLAGS...  -flifetime-dse=1 -std=gnu++14

using LDFLAGS... -lstdc++ -lws2_32 -lwinmm -lgdi32 -ldxguid -lole32 -limm32 -LR:/msys64/mingw64/lib -lz   -LR:/msys64/mingw64/lib -llzma   /mingw/lib/liblzo2.a  -Wl,--subsystem,windows -static

Generating Makefile...

Generating lang/Makefile...

Generating setting/Makefile...

Generating grf/Makefile...

Generating objs/Makefile...