From 37c8a5fafa3bb7dcdd51774be353be6cb2912b86 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 10 Jan 2018 15:19:37 -0600 Subject: kbuild: consolidate Devicetree dtb build rules There is nothing arch specific about building dtb files other than their location under /arch/*/boot/dts/. Keeping each arch aligned is a pain. The dependencies and supported targets are all slightly different. Also, a cross-compiler for each arch is needed, but really the host compiler preprocessor is perfectly fine for building dtbs. Move the build rules to a common location and remove the arch specific ones. This is done in a single step to avoid warnings about overriding rules. The build dependencies had been a mixture of 'scripts' and/or 'prepare'. These pull in several dependencies some of which need a target compiler (specifically devicetable-offsets.h) and aren't needed to build dtbs. All that is really needed is dtc, so adjust the dependencies to only be dtc. This change enables support 'dtbs_install' on some arches which were missing the target. Acked-by: Will Deacon Acked-by: Paul Burton Acked-by: Ley Foon Tan Acked-by: Masahiro Yamada Cc: Michal Marek Cc: Vineet Gupta Cc: Russell King Cc: Catalin Marinas Cc: Yoshinori Sato Cc: Michal Simek Cc: Ralf Baechle Cc: James Hogan Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Chris Zankel Cc: Max Filippov Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring --- scripts/Makefile | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'scripts/Makefile') diff --git a/scripts/Makefile b/scripts/Makefile index 61affa300d25..ece52ff20171 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -39,8 +39,7 @@ build_unifdef: $(obj)/unifdef subdir-$(CONFIG_MODVERSIONS) += genksyms subdir-y += mod subdir-$(CONFIG_SECURITY_SELINUX) += selinux -subdir-$(CONFIG_DTC) += dtc subdir-$(CONFIG_GDB_SCRIPTS) += gdb # Let clean descend into subdirs -subdir- += basic kconfig package gcc-plugins +subdir- += basic dtc kconfig package gcc-plugins -- cgit v1.2.3