+###--------------------------------------------------------------------------
+### Standard configuration substitutions.
+
+## Substitute tags in files.
+confsubst = $(top_srcdir)/config/confsubst
+
+SUBSTITUTIONS = \
+ prefix=$(prefix) exec_prefix=$(exec_prefix) \
+ libdir=$(libdir) includedir=$(includedir) \
+ bindir=$(bindir) sbindir=$(sbindir) \
+ srcdir=$(srcdir) \
+ PACKAGE=$(PACKAGE) VERSION=$(VERSION) ASDF_VERSION=$(ASDF_VERSION)
+
+V_SUBST = $(V_SUBST_@AM_V@)
+V_SUBST_ = $(V_SUBST_@AM_DEFAULT_V@)
+V_SUBST_0 = @echo " SUBST $@";
+SUBST = $(V_SUBST)$(confsubst)
+