diff --git a/config/libc/uClibc.in b/config/libc/uClibc.in
index 219426a0..e830662c 100644
--- a/config/libc/uClibc.in
+++ b/config/libc/uClibc.in
@@ -35,7 +35,8 @@ choice
     prompt "uClibc Version Name"
 
 config LIBC_UCLIBC_CUSTOM_UCLIBC
-    bool "uClibc"
+    bool "uClibc (OBSOLETE)"
+    depends on OBSOLETE
     select LIBC_UCLIBC_0_9_33_2_or_later
 
 config LIBC_UCLIBC_CUSTOM_UCLIBC_NG
@@ -100,7 +101,8 @@ config LIBC_UCLIBC_NG_V_1_0_20
 
 config LIBC_UCLIBC_V_0_9_33_2
     bool
-    prompt "0.9.33.2"
+    prompt "0.9.33.2 (OBSOLETE)"
+    depends on OBSOLETE
     select LIBC_UCLIBC_0_9_33_2_or_later
 
 endchoice
diff --git a/contrib/uClibc-defconfigs/uClibc-ng.config b/contrib/uClibc-defconfigs/uClibc-ng.config
index c17603db..1f0a8c17 100644
--- a/contrib/uClibc-defconfigs/uClibc-ng.config
+++ b/contrib/uClibc-defconfigs/uClibc-ng.config
@@ -5,7 +5,6 @@ KERNEL_HEADERS="/usr/src/linux/include"
 LDSO_RUNPATH=y
 LDSO_RUNPATH_OF_EXECUTABLE=y
 MALLOC_GLIBC_COMPAT=y
-UCLIBC_HAS_OBSTACK=y
 UCLIBC_HAS_UTMPX=y
 UCLIBC_HAS_UTMP=y
 UCLIBC_SUSV2_LEGACY=y
diff --git a/patches/uClibc/0.9.33.2/999-make-olddefconfig.patch b/patches/uClibc/0.9.33.2/999-make-olddefconfig.patch
new file mode 100644
index 00000000..8bc87ec1
--- /dev/null
+++ b/patches/uClibc/0.9.33.2/999-make-olddefconfig.patch
@@ -0,0 +1,41 @@
+diff -urpN uClibc-0.9.33.2.orig/extra/config/conf.c uClibc-0.9.33.2/extra/config/conf.c
+--- uClibc-0.9.33.2.orig/extra/config/conf.c	2017-02-04 12:57:38.488808014 -0800
++++ uClibc-0.9.33.2/extra/config/conf.c	2017-02-04 20:26:28.613244457 -0800
+@@ -435,6 +435,7 @@ int main(int ac, char **av)
+ 	const char *name;
+ 	const char *configname = conf_get_configname();
+ 	struct stat tmpstat;
++	int olddefconfig = 0;
+ 
+ 	setlocale(LC_ALL, "");
+ 	bindtextdomain(PACKAGE, LOCALEDIR);
+@@ -451,6 +452,7 @@ int main(int ac, char **av)
+ 			break;
+ 		case 'd':
+ 			input_mode = set_default;
++			olddefconfig = 1;
+ 			break;
+ 		case 'D':
+ 			input_mode = set_default;
+@@ -514,7 +516,7 @@ int main(int ac, char **av)
+ 	switch (input_mode) {
+ 	case set_default:
+ 		if (!defconfig_file)
+-			defconfig_file = conf_get_default_confname();
++			defconfig_file = olddefconfig ? NULL : conf_get_default_confname();
+ 		if (conf_read(defconfig_file)) {
+ 			printf(_("***\n"
+ 				"*** Can't find default configuration \"%s\"!\n"
+diff -urpN uClibc-0.9.33.2.orig/Makefile.in uClibc-0.9.33.2/Makefile.in
+--- uClibc-0.9.33.2.orig/Makefile.in	2017-02-04 12:57:38.484807980 -0800
++++ uClibc-0.9.33.2/Makefile.in	2017-02-04 12:59:34.625789324 -0800
+@@ -460,6 +460,9 @@ allyesconfig: $(conf)
+ allnoconfig: $(conf)
+ 	$(Q)$< -n extra/Configs/Config.in
+ 
++olddefconfig: $(conf)
++	$(Q)$< -d extra/Configs/Config.in
++
+ defconfig: $(conf)
+ 	$(Q)$< -D extra/Configs/defconfigs/$(ARCH)/$@ extra/Configs/Config.in
+ 
diff --git a/scripts/build/libc/uClibc.sh b/scripts/build/libc/uClibc.sh
index e58912cb..e87abafa 100644
--- a/scripts/build/libc/uClibc.sh
+++ b/scripts/build/libc/uClibc.sh
@@ -138,7 +138,7 @@ do_libc_backend_once() {
     fi
 
     manage_uClibc_config "${CT_LIBC_UCLIBC_CONFIG_FILE}" .config "${multi_flags}"
-    CT_DoYes | CT_DoExecLog ALL make "${make_args[@]}" oldconfig
+    CT_DoExecLog ALL make "${make_args[@]}" olddefconfig
 
     # Now filter the multilib flags. manage_uClibc_config did the opposite of
     # what Rules.mak in uClibc would do: by the multilib's CFLAGS, it determined
diff --git a/scripts/functions b/scripts/functions
index 9489f186..9f852b39 100644
--- a/scripts/functions
+++ b/scripts/functions
@@ -585,14 +585,6 @@ CT_DoForceRmdir() {
     done
 }
 
-# Echoes the specified string on stdout until the pipe breaks.
-# Doesn't fail
-# $1: string to echo
-# Usage: CT_DoYes "" |make oldconfig
-CT_DoYes() {
-    yes "$1" || true
-}
-
 # Add the specified directory to LD_LIBRARY_PATH, and export it
 # If the specified patch is already present, just export
 # $1: path to add