[U-Boot] [PATCH] 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 ---

Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile index d0e7a8a..ad434c7 100644 --- a/Makefile +++ b/Makefile @@ -810,7 +810,9 @@ ifeq ($(CONFIG_DM_I2C_COMPAT),y) endif

PHONY += dtbs -dtbs dts/dt.dtb: checkdtc u-boot +dtbs: dts/dt.dtb + @: +dts/dt.dtb: checkdtc u-boot $(Q)$(MAKE) $(build)=dts dtbs

quiet_cmd_copy = COPY $@