+diff -u -r ../gmime-2.6.23/Makefile.in ./Makefile.in
+--- ../gmime-2.6.23/Makefile.in 2017-01-21 23:27:33.000000000 +0100
++++ ./Makefile.in 2017-04-06 18:58:31.616613454 +0200
+@@ -194,7 +194,7 @@
+ ETAGS = etags
+ CTAGS = ctags
+ CSCOPE = cscope
+-DIST_SUBDIRS = m4 build util gmime mono tests docs examples tools .
++DIST_SUBDIRS = m4 build util gmime mono docs examples tools .
+ am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
+ $(srcdir)/gmime.pc.in $(srcdir)/gmime.spec.in AUTHORS COPYING \
+ ChangeLog NEWS README TODO compile config.guess config.rpath \
+@@ -433,7 +433,7 @@
+ top_build_prefix = @top_build_prefix@
+ top_builddir = @top_builddir@
+ top_srcdir = @top_srcdir@
+-SUBDIRS = m4 build util gmime $(am__append_1) tests docs \
++SUBDIRS = m4 build util gmime $(am__append_1) docs \
+ $(am__append_2) tools .
+
+ # build documentation when doing distcheck