This '+' was added a long time ago:
|commit c23e6bf05f7802e92fd3da69a1ed35e56f9c85bb (HEAD)
|Author: Kai Germaschewski <[email protected]>
|Date: Mon Oct 28 01:16:34 2002 -0600
|
| kbuild: Fix a "make -j<N>" warning
|
|diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
|index 2c843e0380bc..e7c392fd5788 100644
|--- a/scripts/Makefile.clean
|+++ b/scripts/Makefile.clean
|@@ -42,7 +42,7 @@ quiet_cmd_clean = CLEAN $(obj)
|
| __clean: $(subdir-ymn)
| ifneq ($(strip $(__clean-files) $(clean-rule)),)
|- $(call cmd,clean)
|+ +$(call cmd,clean)
| else
| @:
| endif
At that time, cmd_clean contained '$(clean-rule)', which was able to
invoke sub-make. That was why "make -j<N> clean" showed:
warning: jobserver unavailable: using -j1. Add '+' to parent make rule.
It is not the case any more. cmd_clean now just runs the 'rm' command.
The '+' marker is pointless.
Signed-off-by: Masahiro Yamada <[email protected]>
---
scripts/Makefile.clean | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 798e8717c1d9..29281a20cf8e 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -59,7 +59,7 @@ quiet_cmd_clean = CLEAN $(obj)
__clean: $(subdir-ymn)
ifneq ($(strip $(__clean-files)),)
- +$(call cmd,clean)
+ $(call cmd,clean)
endif
@:
--
2.17.1