configure: Make sure to also search for cython3 if cython is not found
diff --git a/m4/ac_pkg_cython.m4 b/m4/ac_pkg_cython.m4
index 123f2dc..e0af96a 100644
--- a/m4/ac_pkg_cython.m4
+++ b/m4/ac_pkg_cython.m4
@@ -1,8 +1,8 @@
AC_DEFUN([AC_PROG_CYTHON],[
- AC_PATH_PROG([CYTHON],[cython])
+ AC_PATH_PROGS([CYTHON],[cython cython3])
if test -z "$CYTHON" ; then
- AC_MSG_WARN([Unable to find 'cython' program. You should look at http://www.cython.org] or install your distribution specific cython package.)
+ AC_MSG_WARN([Unable to find 'cython' or 'cython3' program. You should look at https://cython.org or install your distribution specific cython package.])
CYTHON=false
elif test -n "$1" ; then
AC_MSG_CHECKING([for Cython version])
