From: Arnd Bergmann <arnd@xxxxxxxx> Starting with make-4.4.1, Kbuild uses the special .NOTINTERMEDIATE target to mark all targets as not intermediate, which slightly changes the behavior compared to older versions of make. This causes a build regression with my change to the system call table scripts now in scripts/Makefile.asm-headers, forcing a rebuild of the generated files with every make invocation and effectively breaking incremental builds. I have narrowed down the change in behavior to the way that the 'FORCE' target is treated: If this is marked as not intermediate, the $(if_changed) macro always evaluates it as a missing prerequisite, but if it is marked as .SECONDARY, it works like before. Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> Cc: linux-kbuild@xxxxxxxxxxxxxxx Fixes: 875ef1a57f32 ("kbuild: use .NOTINTERMEDIATE for future GNU Make versions") Fixes: fbb5c0606fa4 ("kbuild: add syscall table generation to scripts/Makefile.asm-headers") Closes: https://lore.kernel.org/lkml/91b10591-1554-4860-8843-01c6cfd7de13@xxxxxxxxxxxxxxxx/T/#m4c979c42d0c086f616e41b4ca76f2873902b8a25 Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> ---- I'm still a bit confused by the way this works in detail, hopefully Masahiro Yamada can either confirm that this is a correct fix or provide a better one. --- scripts/Kbuild.include | 1 + 1 file changed, 1 insertion(+) diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index faf37bafa3f8..aa1ffaeb8fc0 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -267,6 +267,7 @@ endif # deleted files. ifneq ($(and $(filter notintermediate, $(.FEATURES)),$(filter-out 4.4,$(MAKE_VERSION))),) .NOTINTERMEDIATE: +.SECONDARY: FORCE else .SECONDARY: endif -- 2.39.2