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Building the aic7xxx driver includes the copy of an .h file from a _shipped file. In a highly parallel build Ingo saw that the build sometimes failed (included distcc usage). It was tracked down to a missing dependency from the .c source file to the generated .h file. We started to build the .c file before the copy (cat) operation of the .h file completed and we then only got half of the definitions from the copied .h file. Add an explicit dependency from the .c files to the generated .h files so make knows all dependencies and finsih the build of the .h files before it starts building the .o files. Ingo tested this fix and reported: good news: hundreds of successful kernel builds and no failures overnight. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
86 lines
2.7 KiB
Makefile
86 lines
2.7 KiB
Makefile
#
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# Makefile for the Linux aic7xxx SCSI driver.
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#
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# $Id: //depot/linux-aic79xx-2.5.0/drivers/scsi/aic7xxx/Makefile#8 $
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#
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# Let kbuild descend into aicasm when cleaning
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subdir- += aicasm
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obj-$(CONFIG_SCSI_AIC7XXX) += aic7xxx.o
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obj-$(CONFIG_SCSI_AIC79XX) += aic79xx.o
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# Core Fast -> U160 files
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aic7xxx-y += aic7xxx_core.o \
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aic7xxx_93cx6.o
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aic7xxx-$(CONFIG_EISA) += aic7770.o
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aic7xxx-$(CONFIG_PCI) += aic7xxx_pci.o
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aic7xxx-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) += aic7xxx_reg_print.o
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# Platform Specific Fast -> U160 Files
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aic7xxx-y += aic7xxx_osm.o \
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aic7xxx_proc.o
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aic7xxx-$(CONFIG_EISA) += aic7770_osm.o
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aic7xxx-$(CONFIG_PCI) += aic7xxx_osm_pci.o
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# Core U320 files
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aic79xx-y += aic79xx_core.o \
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aic79xx_pci.o
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aic79xx-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) += aic79xx_reg_print.o
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# Platform Specific U320 Files
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aic79xx-y += aic79xx_osm.o \
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aic79xx_proc.o \
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aic79xx_osm_pci.o
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ccflags-y += -Idrivers/scsi
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ifdef WARNINGS_BECOME_ERRORS
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ccflags-y += -Werror
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endif
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# Files generated that shall be removed upon make clean
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clean-files := aic7xxx_seq.h aic7xxx_reg.h aic7xxx_reg_print.c
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clean-files += aic79xx_seq.h aic79xx_reg.h aic79xx_reg_print.c
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# Dependencies for generated files need to be listed explicitly
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$(addprefix $(src)/,$(aic7xxx-y:.o=.c)): $(obj)/aic7xxx_seq.h $(obj)/aic7xxx_reg.h
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$(addprefix $(src)/,$(aic79xx-y:.o=.c)): $(obj)/aic79xx_seq.h $(obj)/aic79xx_reg.h
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aic7xxx-gen-$(CONFIG_AIC7XXX_BUILD_FIRMWARE) := $(obj)/aic7xxx_reg.h
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aic7xxx-gen-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) += $(obj)/aic7xxx_reg_print.c
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aicasm-7xxx-opts-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) := \
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-p $(obj)/aic7xxx_reg_print.c -i aic7xxx_osm.h
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ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y)
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$(obj)/aic7xxx_seq.h: $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm
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$(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic7xxx_reg.h \
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$(aicasm-7xxx-opts-y) -o $(obj)/aic7xxx_seq.h \
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$(src)/aic7xxx.seq
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$(aic7xxx-gen-y): $(obj)/aic7xxx_seq.h
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else
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$(obj)/aic7xxx_reg_print.c: $(src)/aic7xxx_reg_print.c_shipped
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endif
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aic79xx-gen-$(CONFIG_AIC79XX_BUILD_FIRMWARE) := $(obj)/aic79xx_reg.h
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aic79xx-gen-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) += $(obj)/aic79xx_reg_print.c
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aicasm-79xx-opts-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) := \
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-p $(obj)/aic79xx_reg_print.c -i aic79xx_osm.h
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ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y)
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$(obj)/aic79xx_seq.h: $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm
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$(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic79xx_reg.h \
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$(aicasm-79xx-opts-y) -o $(obj)/aic79xx_seq.h \
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$(src)/aic79xx.seq
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$(aic79xx-gen-y): $(obj)/aic79xx_seq.h
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else
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$(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped
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endif
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$(obj)/aicasm/aicasm: $(src)/aicasm/*.[chyl]
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$(MAKE) -C $(src)/aicasm
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