From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Thu, 23 Jun 2016 04:53:46 +0000 (+0900)
Subject: kbuild: avoid race between dtbs and dt/dt.dtb targets
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=4141e85bcd79c0b9b16def710e527f165107b7af;p=u-boot.git

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>
---

diff --git a/Makefile b/Makefile
index 256d4ff38f..0c47bb66c1 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    $@