Re: [PATCH] tools/power/acpi: Fix the compile error when output directory is specified

[Rafael J. Wysocki]

On Tue, Nov 23, 2021 at 2:24 PM Chen Yu <yu.c.chen@xxxxxxxxx> wrote:
>
> Compiling the tool when output directory parameter is specified would
> trigger the following error:
>
> make O=/data/test/tmp/ -C tools/power/acpi/
>
> make: Entering directory '/data/src/kernel/linux/tools/power/acpi'
>   DESCEND tools/acpidbg
> make[1]: Entering directory '/data/src/kernel/linux/tools/power/acpi/tools/acpidbg'
>   MKDIR    include
>   CP       include
>   CC       tools/acpidbg/acpidbg.o
> Assembler messages:
> Fatal error: can't create /data/test/tmp/tools/power/acpi/tools/acpidbg/acpidbg.o: No such file or directory
> make[1]: *** [../../Makefile.rules:24: /data/test/tmp/tools/power/acpi/tools/acpidbg/acpidbg.o] Error 1
> make[1]: Leaving directory '/data/src/kernel/linux/tools/power/acpi/tools/acpidbg'
> make: *** [Makefile:18: acpidbg] Error 2
> make: Leaving directory '/data/src/kernel/linux/tools/power/acpi'
>
> This is because the output directory has not been created yet. Fix this issue by
> creating the output directory before compiling.
>
> Reported-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
> Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>
> ---
>  tools/power/acpi/Makefile.config | 1 +
>  tools/power/acpi/Makefile.rules  | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/tools/power/acpi/Makefile.config b/tools/power/acpi/Makefile.config
> index 331f6d30f472..cd7106876a5f 100644
> --- a/tools/power/acpi/Makefile.config
> +++ b/tools/power/acpi/Makefile.config
> @@ -69,6 +69,7 @@ KERNEL_INCLUDE := $(OUTPUT)include
>  ACPICA_INCLUDE := $(srctree)/../../../drivers/acpi/acpica
>  CFLAGS += -D_LINUX -I$(KERNEL_INCLUDE) -I$(ACPICA_INCLUDE)
>  CFLAGS += $(WARNINGS)
> +MKDIR = mkdir
>
>  ifeq ($(strip $(V)),false)
>         QUIET=@
> diff --git a/tools/power/acpi/Makefile.rules b/tools/power/acpi/Makefile.rules
> index 2a6c170b57cd..1d7616f5d0ae 100644
> --- a/tools/power/acpi/Makefile.rules
> +++ b/tools/power/acpi/Makefile.rules
> @@ -21,6 +21,7 @@ $(KERNEL_INCLUDE):
>
>  $(objdir)%.o: %.c $(KERNEL_INCLUDE)
>         $(ECHO) "  CC      " $(subst $(OUTPUT),,$@)
> +       $(QUIET) $(MKDIR) -p $(objdir) 2>/dev/null
>         $(QUIET) $(CC) -c $(CFLAGS) -o $@ $<
>
>  all: $(OUTPUT)$(TOOL)
> --

Applied (with some edits in the subject and changelog) as 5.16-rc material.

Thanks!