2018-09-06 8:53 GMT+09:00 Rob Herring <r...@kernel.org>: > 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. > > Cc: Masahiro Yamada <yamada.masah...@socionext.com> > Cc: Michal Marek <michal.l...@markovi.net> > Cc: Vineet Gupta <vgu...@synopsys.com> > Cc: Russell King <li...@armlinux.org.uk> > Cc: Catalin Marinas <catalin.mari...@arm.com> > Cc: Will Deacon <will.dea...@arm.com> > Cc: Yoshinori Sato <ys...@users.sourceforge.jp> > Cc: Michal Simek <mon...@monstr.eu> > Cc: Ralf Baechle <r...@linux-mips.org> > Cc: Paul Burton <paul.bur...@mips.com> > Cc: James Hogan <jho...@kernel.org> > Cc: Ley Foon Tan <lf...@altera.com> > Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> > Cc: Paul Mackerras <pau...@samba.org> > Cc: Michael Ellerman <m...@ellerman.id.au> > Cc: Chris Zankel <ch...@zankel.net> > Cc: Max Filippov <jcmvb...@gmail.com> > Cc: linux-kbu...@vger.kernel.org > Cc: linux-snps-...@lists.infradead.org > Cc: linux-arm-ker...@lists.infradead.org > Cc: uclinux-h8-de...@lists.sourceforge.jp > Cc: linux-m...@linux-mips.org > Cc: nios2-...@lists.rocketboards.org > Cc: linuxppc-dev@lists.ozlabs.org > Cc: linux-xte...@linux-xtensa.org > Signed-off-by: Rob Herring <r...@kernel.org> > --- > Please ack so I can take the whole series via the DT tree. > > v2: > - Fix $arch/boot/dts path check for out of tree builds > - Fix dtc dependency for building built-in dtbs > - Fix microblaze built-in dtb building
This breaks parallel building because two threads could descend into scripts/dtc at the same time. 'all' depends on both 'scripts' and 'dtc'. * 'scripts' target -- descends into scripts/, then scripts/dtc * 'dtc' target -- descents into scripts/dtc directly -- Best Regards Masahiro Yamada
