ke@vbox dwm]$ updpkgsums 
==> Retrieving sources...
  -> Found dwm-6.1.tar.gz
  -> Found config.def.h
  -> Found dwm.desktop
  -> Found 01.Setup.makefiles.patch
==> Generating checksums for source files...
[mike@vbox dwm]$ makepkg 
==> Making package: dwm 6.1-2 (Fri Feb  5 21:59:38 PST 2016)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found dwm-6.1.tar.gz
  -> Found config.def.h
  -> Found dwm.desktop
  -> Found 01.Setup.makefiles.patch
==> Validating source files with md5sums...
    dwm-6.1.tar.gz ... Passed
    config.def.h ... Passed
    dwm.desktop ... Passed
    01.Setup.makefiles.patch ... Passed
==> Extracting sources...
  -> Extracting dwm-6.1.tar.gz with bsdtar
==> Removing existing $pkgdir/ directory...
==> Starting build()...
=> 01.Setup.makefiles.patch
patching file config.mk
Hunk #1 FAILED at 4.
1 out of 1 hunk FAILED -- saving rejects to file config.mk.rej
==> ERROR: A failure occurred in build().
    Aborting...