[Xen-devel] [PATCH-for-4.13] build: fix tools/configure in case only python3 exists

[Juergen Gross <jgross@xxxxxxxx>]

Calling ./configure with python3 being there but no python,
tools/configure will fail. Fix that by defaulting to python and
falling back to python3 or python2.

While at it fix the use of non portable "type -p" by replacing it by
AC_PATH_PROG().

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/configure.ac | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/configure.ac b/tools/configure.ac
index a8d8ce5ffe..8d86c42de8 100644
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -337,8 +337,9 @@ case "$host_os" in
   freebsd*) ;;
   *) AX_PATH_PROG_OR_FAIL([BASH], [bash]);;
 esac
-AS_IF([test -z "$PYTHON"], [PYTHON="python"])
-AS_IF([echo "$PYTHON" | grep -q "^/"], [], [PYTHON=`type -p "$PYTHON"`])
+AS_IF([test -z "$PYTHON"], [AC_CHECK_PROGS([PYTHON], [python python3 python2], 
err)])
+AS_IF([test "$PYTHON" = "err"], [AC_MSG_ERROR([No python interpreter found])])
+AS_IF([echo "$PYTHON" | grep -q "^/"], [], [AC_PATH_PROG([PYTHON], [$PYTHON])])
 PYTHONPATH=$PYTHON
 PYTHON=`basename $PYTHONPATH`
 
-- 
2.16.4


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel