CCLD     libmono-dbg.la
  CCLD     libmono-ee-interp.la
  CXXLD    libmini.la
  CCLD     libmonosgen-2.0.la
  CC       libmain_a-main-sgen.o
  AR       libmain.a
../../mono/eglib/.libs/libeglib.a(libeglib_la-gunicode-win32.o): In function `sprintf':
/usr/x86_64-w64-mingw32/sys-root/mingw/include/stdio.h:909: undefined reference to `__chk_fail'
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile:1718: libmonosgen-2.0.la] Error 1
make[4]: Leaving directory '/cygdrive/g/Dev/personal/tinkerengine/3rdparty/mono/mono/mini'
make[3]: *** [Makefile:1544: all] Error 2
make[3]: Leaving directory '/cygdrive/g/Dev/personal/tinkerengine/3rdparty/mono/mono/mini'
make[2]: *** [Makefile:529: all-recursive] Error 1
make[2]: Leaving directory '/cygdrive/g/Dev/personal/tinkerengine/3rdparty/mono/mono'
make[1]: *** [Makefile:597: all-recursive] Error 1
make[1]: Leaving directory '/cygdrive/g/Dev/personal/tinkerengine/3rdparty/mono'
make: *** [Makefile:525: all] Error 2

$ mono --version
Mono JIT compiler version 6.11.0 (master/ffdffa54f24)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
        TLS:
        SIGSEGV:       normal
        Notification:  Thread + polling
        Architecture:  amd64
        Disabled:      none
        Misc:          softdebug
        Interpreter:   yes
        Suspend:       hybrid
        GC:            sgen (concurrent by default)

checking compiler server... yes
configure: WARNING: compiler server temporarily disabled on darwin and win32

        mcs source:    mcs
        C# Compiler:   roslyn
        CompilerServer:

   Engine:
        Host:          x86_64-w64-mingw32
        Target:        x86_64-w64-mingw32
        GC:            sgen (concurrent by default)
        Suspend:       Hybrid
        TLS:           pthread
        SIGALTSTACK:   no
        Engine:        Building and using the JIT
        BigArrays:     no
        DTrace:        no
        LLVM Back End: no (dynamically loaded: no, built in-tree: no, assertions: no, msvc only: no)
        Spectre:       no mitigation
        Mono.Native:   no

   Libraries:
        .NET 4.x:        yes
        Xamarin.Android: no
        Xamarin.iOS:     no
        Xamarin.WatchOS: no
        Xamarin.TVOS:    no
        Xamarin.Mac:     no
        Windows AOT:     no
        Orbis:           no
        Unreal:          no
        WebAssembly:     no
        Test profiles:   AOT Full (no), AOT Hybrid (no), AOT Full Interp (no), Windows Full AOT Interp (no)
        JNI support:     no
        libgdiplus:      assumed to be installed
        zlib:            bundled zlib
        BTLS:            no
        jemalloc:        no (always use: no)
        crash reporting: no (private crashes: yes)
        .NET Core:       no


Now type `make' to compile