python, python3: fix to ensure libpython is stripped

The python and python3 builds mark libpython as read-only which
prevents it from being stripped out correctly for the target.

Signed-off-by: Przemyslaw Wrzos <przemyslaw.wrzos@calyptech.com>
Acked-by: Thomas De Schampheleire <thomas.de_schampheleire@alcatel-lucent.com>
Tested-by: Thomas De Schampheleire <thomas.de_schampheleire@alcatel-lucent.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python/python.mk

@@ -160,6 +160,15 @@ endef
 
 PYTHON_POST_INSTALL_TARGET_HOOKS += PYTHON_REMOVE_USELESS_FILES
 
+#
+# Make sure libpython gets stripped out on target
+#
+define PYTHON_ENSURE_LIBPYTHON_STRIPPED
+	chmod u+w $(TARGET_DIR)/usr/lib/libpython$(PYTHON_VERSION_MAJOR)*.so
+endef
+
+PYTHON_POST_INSTALL_TARGET_HOOKS += PYTHON_ENSURE_LIBPYTHON_STRIPPED
+
 PYTHON_AUTORECONF = YES
 
 # Provided to other packages

package/python3/python3.mk

@@ -131,6 +131,15 @@ endef
 
 PYTHON3_POST_INSTALL_TARGET_HOOKS += PYTHON3_REMOVE_USELESS_FILES
 
+#
+# Make sure libpython gets stripped out on target
+#
+define PYTHON3_ENSURE_LIBPYTHON_STRIPPED
+	chmod u+w $(TARGET_DIR)/usr/lib/libpython$(PYTHON3_VERSION_MAJOR)*.so
+endef
+
+PYTHON3_POST_INSTALL_TARGET_HOOKS += PYTHON3_ENSURE_LIBPYTHON_STRIPPED
+
 PYTHON3_AUTORECONF = YES
 
 define PYTHON3_INSTALL_SYMLINK