[Qemu-devel] [PATCH v2 2/2] make: load only required dependency files.

[Victor Kaplansky]

The old rules.mak loads dependency .d files using include directive
with file glob pattern "*.d". This breaks the build when build tree has
remanent *.d files from another build.

This patch fixes this by
  - loading precise list of .d files made from *.o and *.mo.
  - specifying explicit list of required dependency info files for
     *.hex autogenerated sources.

Note that Makefile still includes some .d in rood directory by including
"*.d".

Signed-off-by: Victor Kaplansky <address@hidden>
---
 hw/i386/Makefile.objs | 2 ++
 rules.mak             | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index bd4f147..311d364 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -10,6 +10,8 @@ obj-y += acpi-build.o
 hw/i386/acpi-build.o: hw/i386/acpi-build.c \
        hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex
 
+-include hw/i386/acpi-dsdt.d hw/i386/q35-acpi-dsdt.d
+
 iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
     ; then echo "$(2)"; else echo "$(3)"; fi ;)
 
diff --git a/rules.mak b/rules.mak
index 6e35c36..4551b9e 100644
--- a/rules.mak
+++ b/rules.mak
@@ -368,6 +368,6 @@ define unnest-vars
                 $(error $o added in $v but $o-objs is not set)))
         $(shell mkdir -p ./ $(sort $(dir $($v))))
         # Include all the .d files
-        $(eval -include $(addsuffix *.d, $(sort $(dir $($v)))))
+        $(eval -include $(patsubst %.o,%.d,$(patsubst %.mo,%.d,$($v))))
         $(eval $v := $(filter-out %/,$($v))))
 endef
-- 
--Victor