makefile: copy default_version_script to version_script if latter one…

… missing

When building kernel with most symbols hidden for the very first time, the
default_version_script is generated correctly however we do miss to copy
it to version_script and the build fails. This patch fixes it by
detecting this case and copying default_version_script to
version_script.

Signed-off-by: Waldemar Kozaczuk <[email protected]>

Makefile

@@ -2067,6 +2067,9 @@ ifneq ($(shell cmp $(out)/version_script $(conf_version_script)),)
 $(shell cp $(conf_version_script) $(out)/version_script)
 endif
 else
+ifeq ($(shell test -e $(out)/version_script || echo -n no),no)
+$(shell cp $(out)/default_version_script $(out)/version_script)
+endif
 ifneq ($(shell cmp $(out)/version_script $(out)/default_version_script),)
 $(shell cp $(out)/default_version_script $(out)/version_script)
 endif