Hi Shuah,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.8-rc5 next-20160909]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Shuah-Khan/Move-runnable-code-tests-from-Documentation-to-selftests/20160910-063538
config: i386-tinyconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

quoted

scripts/Makefile.build:44: Documentation/filesystems/Makefile: No such file or directory
make[3]: *** No rule to make target 'Documentation/filesystems/Makefile'.

   make[3]: Failed to remake makefile 'Documentation/filesystems/Makefile'.

vim +44 scripts/Makefile.build

f77bf0142 Sam Ravnborg     2007-10-15  28  ldflags-y  :=
d72e5edbf Sam Ravnborg     2007-05-28  29  
720097d89 Sam Ravnborg     2009-04-19  30  subdir-asflags-y :=
720097d89 Sam Ravnborg     2009-04-19  31  subdir-ccflags-y :=
720097d89 Sam Ravnborg     2009-04-19  32  
3156fd052 Robert P. J. Day 2008-02-18  33  # Read auto.conf if it exists, otherwise ignore
c955ccafc Roman Zippel     2006-06-08  34  -include include/config/auto.conf
^1da177e4 Linus Torvalds   2005-04-16  35  
20a468b51 Sam Ravnborg     2006-01-22  36  include scripts/Kbuild.include
20a468b51 Sam Ravnborg     2006-01-22  37  
3156fd052 Robert P. J. Day 2008-02-18  38  # For backward compatibility check that these variables do not change
0c53c8e6e Sam Ravnborg     2007-10-14  39  save-cflags := $(CFLAGS)
0c53c8e6e Sam Ravnborg     2007-10-14  40  
2a6914703 Sam Ravnborg     2005-07-25  41  # The filename Kbuild has precedence over Makefile
db8c1a7b2 Sam Ravnborg     2005-07-27  42  kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
0c53c8e6e Sam Ravnborg     2007-10-14  43  kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
0c53c8e6e Sam Ravnborg     2007-10-14 @44  include $(kbuild-file)
^1da177e4 Linus Torvalds   2005-04-16  45  
0c53c8e6e Sam Ravnborg     2007-10-14  46  # If the save-* variables changed error out
0c53c8e6e Sam Ravnborg     2007-10-14  47  ifeq ($(KBUILD_NOPEDANTIC),)
0c53c8e6e Sam Ravnborg     2007-10-14  48          ifneq ("$(save-cflags)","$(CFLAGS)")
49c57d254 Arnaud Lacombe   2011-08-15  49                  $(error CFLAGS was changed in "$(kbuild-file)". Fix it to use ccflags-y)
0c53c8e6e Sam Ravnborg     2007-10-14  50          endif
0c53c8e6e Sam Ravnborg     2007-10-14  51  endif
4a5838ad9 Borislav Petkov  2011-03-01  52  

:::::: The code at line 44 was first introduced by commit
:::::: 0c53c8e6eb456cde30f2305421c605713856abc8 kbuild: check for wrong use of CFLAGS

:::::: TO: Sam Ravnborg <sam@neptun.(none)>
:::::: CC: Sam Ravnborg <sam@neptun.(none)>

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