Found the following significant warnings:
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/minwindef.h:196:3: warning: function declaration isn't a prototype [-Wstrict-prototypes]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/minwindef.h:197:3: warning: function declaration isn't a prototype [-Wstrict-prototypes]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/minwindef.h:198:3: warning: function declaration isn't a prototype [-Wstrict-prototypes]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/processthreadsapi.h:130:47: warning: ISO C does not allow extra ';' outside of a function [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2105:52: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2137:42: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2145:43: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2152:49: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2161:46: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2254:43: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2269:46: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/wingdi.h:2355:49: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/winuser.h:4235:34: warning: ISO C does not allow extra ';' outside of a function [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/winuser.h:4236:35: warning: ISO C does not allow extra ';' outside of a function [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/winuser.h:6736:40: warning: ISO C does not allow extra ';' outside of a function [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/winuser.h:6749:54: warning: ISO C does not allow extra ';' outside of a function [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/rpcndr.h:451:3: warning: function declaration isn't a prototype [-Wstrict-prototypes]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/urlmon.h:1333:24: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/urlmon.h:1745:25: warning: ISO C restricts enumerator values to range of 'int' [-Wpedantic]
  D:/rtools43/usr/lib/mxe/usr/x86_64-w64-mingw32.static.posix/include/winioctl.h:359:11: warning: ISO C forbids zero-size array 'SerialNumber' [-Wpedantic]
See 'd:/Rcompile/CRANpkg/local/4.3/Cairo.Rcheck/00install.out' for details.
* used C compiler: 'gcc.exe (GCC) 12.3.0'