python: Use sys.version_info[0] instead of sys.version_info.major.

The major/minor fields only exist in Python >= 2.7.  This works for at
least Python 2.5 and 2.6.

Thanks to Hilko Bengen.

This updates commit 646142f5136da9cfe2b908703a822c53350f70e9.
(cherry picked from commit 31e5539a14f78d8815d0d930e91023a65b5395e7)

diff --git a/configure.ac b/configure.ac
index 3f91193..de3d6f5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -604,8 +604,8 @@ AS_IF([test "x$enable_python" != "xno"],
            AC_MSG_RESULT([$PYTHON_PREFIX])
 
            AC_MSG_CHECKING([Python version])
-            PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info.major)"`
-            PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info.minor)"`
+            PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info@<:@0@:>@)"`
+            PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"`
             PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR"
            AC_MSG_RESULT([$PYTHON_VERSION])