make: fix where dependency *.d are stored.
In rules like "bar/%.o: %.c" there is a difference between $(*D) and $(@D). $(*D) expands to '.', while $(@D) expands to 'bar'. It is cleaner to generate *.d in the same directory where appropriate *.o resides. This allows precise including of dependency info from .d files. As a hack, we also touch two sources for generated *.hex files. Without this hack, anyone doing "git pull; make" will not get *.hex rebuilt correctly since the dependency file would be missing. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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			@ -43,7 +43,6 @@ DefinitionBlock (
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#include "acpi-dsdt-hpet.dsl"
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/****************************************************************
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 * PIIX4 PM
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 ****************************************************************/
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			@ -22,6 +22,7 @@
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 * Based on acpi-dsdt.dsl, but heavily modified for q35 chipset.
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 */
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ACPI_EXTRACT_ALL_CODE Q35AcpiDsdtAmlCode
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DefinitionBlock (
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			@ -17,7 +17,7 @@ MAKEFLAGS += -rR
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QEMU_CXXFLAGS = -D__STDC_LIMIT_MACROS $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wold-style-declaration -Wold-style-definition -Wredundant-decls, $(QEMU_CFLAGS))
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# Flags for dependency generation
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QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
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QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
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# Same as -I$(SRC_PATH) -I., but for the nested source/object directories
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QEMU_INCLUDES += -I$(<D) -I$(@D)
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