[folks] Allow generated source files to exist after distcleancheck.

[Travis Reitter <treitter src gnome org>]

commit 07ce4077e62b4adbf3191249ddb355512cca5bde
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Thu May 12 22:54:35 2011 -0700

    Allow generated source files to exist after distcleancheck.
    
    It turns out to be nearly impossible to satisfy a standard distcleancheck
    with Vala and its automake support. This is specifically a work-around
    because there doesn't seem to be any obvious way to satisfy these
    requirements:
    
      * the release tarball can be built without gobject-introspection, valac,
        or vapigen
    
      * it's safe to run "make distclean" in the release tarball without
        suddenly requiring the tools listed above (due to generated files
        being removed)
    
      * "make distcheck" doesn't fail its "distcleancheck" phase due to the
        following files remaining after distclean:
    
        - tests/lib/telepathy/contactlist/tp-test-contactlist.gir
        - tests/lib/telepathy/contactlist/tp-test-contactlist.vapi
        - backends/telepathy/lib/tp-lowlevel.gir
        - backends/telepathy/lib/tp-lowlevel.vapi
    
    We've hit this last issue multiple times, and no fix seems to stick. So
    stripping out this check seems to be the best option (until we can
    remove the Vala/GObject-Introspection-free build requirement, when
    they've stabilized more and we don't depend upon the latest versions which
    may not be in all the major distros).

 Makefile.am |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d5de991..a0540d4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -54,6 +54,10 @@ distclean-local:
 		rm -f ChangeLog; \
 	fi
 
+distcleancheck_listfiles = \
+	find . -type f -exec sh -c 'test -f $(srcdir)/$$1 || echo $$1' \
+		sh '{}' ';'
+
 ChangeLog:
 	@echo Creating $@
 	@if test -d "$(srcdir)/.git"; then \