Re: [Qemu-devel] [PATCH] make: automatically include dependencies in recursive subdir rules (v2)

[Anthony Liguori <aliguori@us.ibm.com>]

On 06/17/2012 07:01 PM, Anthony Liguori wrote:
> I think I understand enough of what's going on in these rules to ensure this is
> right.  But I could certainly use a second or third opinion...
>
> Signed-off-by: Anthony Liguori<aliguori@us.ibm.com>

Applied.

Regards,

Anthony Liguori

> ---
> v1 ->  v2
>   - Remove unnecessary includes (Andreas)
>   - Add a sub makefile for hw/kvm (Andreas)
> ---
>   Makefile              |    4 ++--
>   Makefile.dis          |    2 +-
>   Makefile.target       |    2 +-
>   Makefile.user         |    2 +-
>   hw/i386/Makefile.objs |    2 +-
>   hw/kvm/Makefile.objs  |    1 +
>   rules.mak             |    1 +
>   7 files changed, 8 insertions(+), 6 deletions(-)
>   create mode 100644 hw/kvm/Makefile.objs
>
> diff --git a/Makefile b/Makefile
> index cce45fb..593bd9b 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -405,5 +405,5 @@ tar:
>   Makefile: $(GENERATED_HEADERS)
>
>   # Include automatically generated dependency files
> --include $(wildcard *.d audio/*.d slirp/*.d block/*.d net/*.d ui/*.d qapi/*.d)
> --include $(wildcard qga/*.d hw/*.d hw/usb/*.d qom/*.d)
> +# All subdir dependencies come automatically from our recursive subdir rules
> +-include $(wildcard *.d)
> diff --git a/Makefile.dis b/Makefile.dis
> index 3e1fcaf..09060f0 100644
> --- a/Makefile.dis
> +++ b/Makefile.dis
> @@ -20,4 +20,4 @@ clean:
>   	rm -f *.o *.d *.a *~
>
>   # Include automatically generated dependency files
> --include $(wildcard *.d */*.d)
> +-include $(wildcard *.d)
> diff --git a/Makefile.target b/Makefile.target
> index 2907aad..550d889 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -216,4 +216,4 @@ GENERATED_HEADERS += config-target.h
>   Makefile: $(GENERATED_HEADERS)
>
>   # Include automatically generated dependency files
> --include $(wildcard *.d */*.d)
> +-include $(wildcard *.d)
> diff --git a/Makefile.user b/Makefile.user
> index b717820..0ffefe8 100644
> --- a/Makefile.user
> +++ b/Makefile.user
> @@ -23,4 +23,4 @@ clean:
>   	done
>
>   # Include automatically generated dependency files
> --include $(wildcard *.d */*.d)
> +-include $(wildcard *.d)
> diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
> index d43f1df..eb171b7 100644
> --- a/hw/i386/Makefile.objs
> +++ b/hw/i386/Makefile.objs
> @@ -7,7 +7,7 @@ obj-y += debugcon.o multiboot.o
>   obj-y += pc_piix.o
>   obj-y += pc_sysfw.o
>   obj-$(CONFIG_XEN) += xen_platform.o xen_apic.o
> -obj-$(CONFIG_KVM) += kvm/clock.o kvm/apic.o kvm/i8259.o kvm/ioapic.o kvm/i8254.o
> +obj-y += kvm/
>   obj-$(CONFIG_SPICE) += qxl.o qxl-logger.o qxl-render.o
>
>   obj-y := $(addprefix ../,$(obj-y))
> diff --git a/hw/kvm/Makefile.objs b/hw/kvm/Makefile.objs
> new file mode 100644
> index 0000000..226497a
> --- /dev/null
> +++ b/hw/kvm/Makefile.objs
> @@ -0,0 +1 @@
> +obj-$(CONFIG_KVM) += clock.o apic.o i8259.o ioapic.o i8254.o
> diff --git a/rules.mak b/rules.mak
> index 4bc5e52..60f3e96 100644
> --- a/rules.mak
> +++ b/rules.mak
> @@ -94,6 +94,7 @@ define unnest-dir
>   $(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
>   $(eval obj := $(obj)/$1)
>   $(eval include $(SRC_PATH)/$1/Makefile.objs)
> +$(eval -include $(wildcard $1/*.d))
>   $(eval obj := $(patsubst %/$1,%,$(obj)))
>   $(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
>   endef