Tag
# Check to see if we're running under Cygwin32, without using
# AC_CANONICAL_*. If so, set output variable CYGWIN32 to "yes".
# Otherwise set it to "no".
dnl AM_CYGWIN32()
AC_DEFUN(AM_CYGWIN32,
[AC_CACHE_CHECK(for Cygwin32 environment, am_cv_cygwin32,
[AC_TRY_COMPILE(,[return __CYGWIN32__;],
am_cv_cygwin32=yes, am_cv_cygwin32=no)
rm -f conftest*])
CYGWIN32=
test "$am_cv_cygwin32" = yes && CYGWIN32=yes])