mingw: drop the use of -mwin32 in CC_OPTS; no longer needed
AC_PROG_CPP
dnl ** does the C compiler support the following options?
-FPTOOLS_CC_FLAG(-mwin32,CC_SUPPORTS_MWIN32)
FPTOOLS_CC_FLAG(-mno-cygwin,CC_SUPPORTS_MNO_CYGWIN)
-EXTRA_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN $CC_SUPPORTS_MWIN32"
+EXTRA_CC_OPTS="$CC_SUPPORTS_MNO_CYGWIN"
SRC_CC_OPTS="-O $EXTRA_CC_OPTS"
CPPFLAGS="$EXTRA_CC_OPTS $CPPFLAGS"
AC_SUBST(SRC_CC_OPTS)