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kbuild: avoid race between dtbs and dt/dt.dtb targets 

If the final targets depend on both "dtbs" and "dts/dt.dtb",
and -j option is given to the command line, multiple threads
descend into the dts/ directory, which causes build error.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Andreas Dannenberg <dannenberg@ti.com>
This commit is contained in:
Masahiro Yamada 2016-06-23 13:53:46 +09:00 committed by Tom Rini
parent fba5f93c71
commit 4141e85bcd
1 changed files with 3 additions and 1 deletions
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4
Makefile
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@ -810,7 +810,9 @@ ifeq ($(CONFIG_DM_I2C_COMPAT),y)
endif endif
PHONY += dtbs PHONY += dtbs
dtbs dts/dt.dtb: checkdtc u-boot dtbs: dts/dt.dtb
@:
dts/dt.dtb: checkdtc u-boot
$(Q)$(MAKE) $(build)=dts dtbs $(Q)$(MAKE) $(build)=dts dtbs
quiet_cmd_copy = COPY $@ quiet_cmd_copy = COPY $@