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-rw-r--r--m4/python.m410
1 files changed, 8 insertions, 2 deletions
diff --git a/m4/python.m4 b/m4/python.m4
index e4d804d..bdc8ee6 100644
--- a/m4/python.m4
+++ b/m4/python.m4
@@ -74,8 +74,14 @@ CPPFLAGS="$save_CPPFLAGS"
# and with python 3.0 support.
AC_DEFUN([JD_PYTHON_CHECK_VERSION],
[prog="import sys
-minver = tuple(map(int, '$2'.split('.')))
-sys.exit(sys.version_info[[:3]] < minver)"
+# split strings by '.' and convert to numeric. Append some zeros
+# because we need at least 4 digits for the hex conversion.
+# map returns an iterator in Python 3.0 and a list in 2.x
+minver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]]
+minverhex = 0
+# xrange is not present in Python 3.0 and range returns an iterator
+for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]]
+sys.exit(sys.hexversion < minverhex)"
AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005