diff -rNU3 dist.orig/Makefile.in dist.nbsd/Makefile.in
--- dist.orig/Makefile.in	2013-03-13 16:38:22.000000000 +0100
+++ dist.nbsd/Makefile.in	2013-12-06 20:13:14.174967585 +0100
@@ -337,8 +337,12 @@
 	$(SHELL) ./config.status --recheck
 
 $(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	@echo "NOT REBUILDING $@"
+NetBSD_DISABLED_configure:
 	$(am__cd) $(srcdir) && $(AUTOCONF)
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	@echo "NOT REBUILDING $@"
+NetBSD_DISABLED_aclocal:
 	$(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
 $(am__aclocal_m4_deps):
 
diff -rNU3 dist.orig/PATCHES dist.nbsd/PATCHES
--- dist.orig/PATCHES	2013-03-13 16:37:38.000000000 +0100
+++ dist.nbsd/PATCHES	2013-12-06 20:13:14.171634202 +0100
@@ -0,0 +1,4 @@
+texp-zero
+atan-expo-range
+rec_sqrt-carry
+asin_exprange
diff -rNU3 dist.orig/src/Makefile.in dist.nbsd/src/Makefile.in
--- dist.orig/src/Makefile.in	2013-03-13 16:38:21.000000000 +0100
+++ dist.nbsd/src/Makefile.in	2013-12-06 20:13:14.181634352 +0100
@@ -921,6 +921,8 @@
 # should not be a problem in practice, in particular because "make dist"
 # automatically rebuilds get_patches.c before generating the archives.
 $(srcdir)/get_patches.c: $(top_srcdir)/PATCHES $(top_srcdir)/tools/get_patches.sh
+	@echo "NOT REBUILDING $@"
+NetBSD_DISABLED_get_patches.c:
 	(cd $(top_srcdir) && ./tools/get_patches.sh) > $@ || rm -f $@
 
 # Do not add get_patches.c to CLEANFILES so that this file doesn't