> But to what libraries is Chicken linked in each case? That could be the
> source of the discrepancy (does Chicken link to Windows-specific libs
> when compiled for Windows? Or different versions of libraries?)
$ ldd /c/Users/markj/dev/lisp/chicken/aoc-chicken/build/advent2015.exe
ntdll.dll => /c/Windows/SYSTEM32/ntdll.dll (0x7ff8519b0000)
KERNEL32.DLL => /c/Windows/System32/KERNEL32.DLL (0x7ff8507a0000)
KERNELBASE.dll => /c/Windows/System32/KERNELBASE.dll (0x7ff84f640000)
msvcrt.dll => /c/Windows/System32/msvcrt.dll (0x7ff850a30000)
libchicken.dll => /usr/local/bin/libchicken.dll (0x7ff803b40000)
ADVAPI32.dll => /c/Windows/System32/ADVAPI32.dll (0x7ff850e30000)
sechost.dll => /c/Windows/System32/sechost.dll (0x7ff851750000)
RPCRT4.dll => /c/Windows/System32/RPCRT4.dll (0x7ff850860000)
USER32.dll => /c/Windows/System32/USER32.dll (0x7ff84ffa0000)
win32u.dll => /c/Windows/System32/win32u.dll (0x7ff84f180000)
GDI32.dll => /c/Windows/System32/GDI32.dll (0x7ff850a00000)
gdi32full.dll => /c/Windows/System32/gdi32full.dll (0x7ff84f4e0000)
msvcp_win.dll => /c/Windows/System32/msvcp_win.dll (0x7ff84f0e0000)
ucrtbase.dll => /c/Windows/System32/ucrtbase.dll (0x7ff84f910000)
WS2_32.dll => /c/Windows/System32/WS2_32.dll (0x7ff850990000)