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

[libguestfs.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 7a19e33..df9911d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -713,7 +713,9 @@ AS_IF([test "x$enable_python" != "xno"],
            AC_MSG_RESULT([$PYTHON_PREFIX])
 
            AC_MSG_CHECKING([Python version])
-            PYTHON_VERSION=`$PYTHON -c "import sys; print (sys.version[[0:3]])"`
+            PYTHON_VERSION_MAJOR=`$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])
 
             AC_MSG_CHECKING([for Python include path])
@@ -741,9 +743,19 @@ AS_IF([test "x$enable_python" != "xno"],
                 AC_MSG_RESULT([$PYTHON_INSTALLDIR])
             fi
 
+            dnl Look for libpython and some optional symbols in it.
             old_LIBS="$LIBS"
-            LIBS="$LIBS -lpython$PYTHON_VERSION"
-            AC_CHECK_FUNCS([PyCapsule_New])
+            if test "x$PYTHON_VERSION_MAJOR" = "x3"; then
+                dnl libpython3 is called "libpython3.Xmu.so"
+                LIBPYTHON="python${PYTHON_VERSION}mu"
+            else
+                LIBPYTHON="python$PYTHON_VERSION"
+            fi
+            AC_CHECK_LIB([$LIBPYTHON], [PyList_Size], [],
+                         [AC_MSG_FAILURE([$LIBPYTHON is not installed])])
+
+            AC_CHECK_FUNCS([PyCapsule_New \
+                            PyString_AsString])
             LIBS="$old_LIBS"
         fi