diff mbox series

[4/5] kbuild: create symlink to vmlinux-gdb.py in scripts_gdb target

Message ID 1550568787-18710-4-git-send-email-yamada.masahiro@socionext.com (mailing list archive)
State New, archived
Headers show
Series [1/5] scripts/gdb: delay generation of gdb constants.py | expand

Commit Message

Masahiro Yamada Feb. 19, 2019, 9:33 a.m. UTC
It is weird to create gdb stuff as a side-effect of vmlinux.

Move it to a more relevant place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 Makefile | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Kieran Bingham Feb. 27, 2019, 11:48 a.m. UTC | #1
Hi Yamada-san,

On 19/02/2019 09:33, Masahiro Yamada wrote:
> It is weird to create gdb stuff as a side-effect of vmlinux.
> 
> Move it to a more relevant place.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
> 
>  Makefile | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index a5762c6..0459260 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1015,9 +1015,6 @@ cmd_link-vmlinux =                                                 \
>  	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
>  
>  vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
> -ifdef CONFIG_GDB_SCRIPTS
> -	$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
> -endif

My initial thought was, doesn't this have a dependency on the vmlinux
... but of course it doesn't. It's not symlinking to the output binary -
it's creating a helper link for GDB to know how to tie in the
scripts-gdb package. It doesn't require vmlinux to exist at all.

So yes, I agree this is fine.


>  	+$(call if_changed,link-vmlinux)
>  
>  targets := vmlinux
> @@ -1519,6 +1516,7 @@ $(DOC_TARGETS): scripts_basic FORCE
>  PHONY += scripts_gdb
>  scripts_gdb: prepare
>  	$(Q)$(MAKE) $(build)=scripts/gdb
> +	$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)

and especially as we now have this convenient location for it.
This looks much better.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

>  
>  ifdef CONFIG_GDB_SCRIPTS
>  all: scripts_gdb
>
diff mbox series

Patch

diff --git a/Makefile b/Makefile
index a5762c6..0459260 100644
--- a/Makefile
+++ b/Makefile
@@ -1015,9 +1015,6 @@  cmd_link-vmlinux =                                                 \
 	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
 
 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
-ifdef CONFIG_GDB_SCRIPTS
-	$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
-endif
 	+$(call if_changed,link-vmlinux)
 
 targets := vmlinux
@@ -1519,6 +1516,7 @@  $(DOC_TARGETS): scripts_basic FORCE
 PHONY += scripts_gdb
 scripts_gdb: prepare
 	$(Q)$(MAKE) $(build)=scripts/gdb
+	$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
 
 ifdef CONFIG_GDB_SCRIPTS
 all: scripts_gdb