target/linux/ppc44x/patches-3.18/900-bootwrapper-parallel-make-fix.patch

   1 From: Jo-Philipp Wich <jo@mein.io>
   2 Date: Wed, 4 Jan 2017 10:35:00 +0100
   3 Subject: [PATCH] powerpc: boot: fix build with parallel make
   4
   5 The powerpc boot wrapper Makefile is not parallel build safe, causing fixdep
   6 to fail reading dependency files of the addnote, hack-coff and mktree
   7 utilities when concurrently building different image targets.
   8
   9 A typical failure looks like:
  10
  11       Building modules, stage 2.
  12       HOSTCC  arch/powerpc/boot/addnote
  13       HOSTCC  arch/powerpc/boot/hack-coff
  14       DTC     arch/powerpc/boot/taishan.dtb
  15       HOSTCC  arch/powerpc/boot/addnote
  16       HOSTCC  arch/powerpc/boot/hack-coff
  17       MODPOST 800 modules
  18     fixdep: error opening depfile: arch/powerpc/boot/.hack-coff.d: No such file or directory
  19     scripts/Makefile.host:91: recipe for target 'arch/powerpc/boot/hack-coff' failed
  20     make[5]: *** [arch/powerpc/boot/hack-coff] Error 2
  21     make[5]: *** Waiting for unfinished jobs....
  22     fixdep: error opening depfile: arch/powerpc/boot/.addnote.d: No such file or directory
  23     scripts/Makefile.host:91: recipe for target 'arch/powerpc/boot/addnote' failed
  24     make[5]: *** [arch/powerpc/boot/addnote] Error 2
  25     rm arch/powerpc/boot/taishan.dtb
  26     arch/powerpc/Makefile:263: recipe for target 'cuImage.taishan' failed
  27     make[4]: *** [cuImage.taishan] Error 2
  28     make[4]: *** Waiting for unfinished jobs....
  29
  30 Add a GNU make specific .NOTPARALLEL pseudo rule to enforce sequential building
  31 of the addnote, hack-coff and mktree executables.
  32
  33 Signed-off-by: Jo-Philipp Wich <jo@mein.io>
  34
  35 --- a/arch/powerpc/boot/Makefile
  36 +++ b/arch/powerpc/boot/Makefile
  37 @@ -194,6 +194,8 @@ wrapper             :=$(srctree)/$(src)/wrapper
  38  wrapperbits    := $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
  39                         $(wrapper) FORCE
  40
  41 +.NOTPARALLEL: $(addprefix $(obj)/,addnote hack-coff mktree) $(wrapper)
  42 +
  43  #############
  44  # Bits for building various flavours of zImage
  45