build-sys: avoid harmless error message during install

Different way to fix #411817 by just avoiding to list a directory that
won't contain python files.

diff --git a/pym/Makefile.in b/pym/Makefile.in
index aa903bb42b75cb4d491220f4f6b1733f82bdf86e..ce8fa39206fedaba03e7ca29ff9b304977853838 100644 (file)
--- a/pym/Makefile.in
+++ b/pym/Makefile.in
@@ -17,7 +17,7 @@ INSTALL = @INSTALL@
 INSTALL_subst = ${top_builddir}/subst-install
 
 list_sourcedir_dirs = \
-       ( cd "$(srcdir)" && find . -name '.svn' -prune -o -type d -print )
+       ( cd "$(srcdir)" && find . -name '.git' -prune -o -type d -print | sed 's#^./\?##' )
 
 all: