diff --git a/component/libsigc/buildout.cfg b/component/libsigc/buildout.cfg
index a1081467c9406744d13300e9fc3813d1be94643d..e06bdf9a7000edea88306b2aaf177226751522ab 100644
--- a/component/libsigc/buildout.cfg
+++ b/component/libsigc/buildout.cfg
@@ -1,4 +1,7 @@
 [buildout]
+extends =
+  ../m4/buildout.cfg
+
 parts =
   libsigc
 
@@ -8,3 +11,5 @@ url = http://ftp.gnome.org/pub/GNOME/sources/libsigc++/2.3/libsigc++-2.3.1.tar.x
 md5sum = 06a0569e8ba161d3428e7daa838682f8
 configure-options =
   --disable-documentation
+environment =
+  PATH=${m4:location}/bin:%(PATH)s