diff --git a/package/czmq/Config.in b/package/czmq/Config.in
index 29333680f..fbdedd1be 100644
--- a/package/czmq/Config.in
+++ b/package/czmq/Config.in
@@ -1,22 +1,18 @@
 config BR2_PACKAGE_CZMQ
 	bool "czmq"
 	select BR2_PACKAGE_ZEROMQ
+	depends on BR2_USE_MMU # fork()
 	depends on BR2_INSTALL_LIBSTDCPP # zeromq
 	depends on BR2_INET_IPV6 # zeromq
 	depends on BR2_LARGEFILE # util-linux
 	depends on BR2_USE_WCHAR # util-linux
 	depends on BR2_TOOLCHAIN_HAS_THREADS # zeromq
-	# uClibc toolchains provided by ADI don't have AI_ADDRCONFIG
-	# support
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 && \
-		!BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R1
 	help
 	  High-level C Binding for 0MQ
 
 	  http://czmq.zeromq.org/
 
 comment "czmq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 && \
-		!BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R1
+	depends on BR2_USE_MMU
 	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
 		&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)
diff --git a/package/filemq/Config.in b/package/filemq/Config.in
index b7b085d54..1604846c5 100644
--- a/package/filemq/Config.in
+++ b/package/filemq/Config.in
@@ -8,17 +8,13 @@ config BR2_PACKAGE_FILEMQ
 	depends on BR2_LARGEFILE # util-linux
 	depends on BR2_USE_WCHAR # util-linux
 	depends on BR2_TOOLCHAIN_HAS_THREADS # zeromq
-	# uClibc toolchains provided by ADI don't have AI_ADDRCONFIG
-	# support, which is needed by czmq
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 && \
-		!BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R1
+	depends on BR2_USE_MMU # czmq
 	help
 	  FileMQ is a publish-subscribe file service based on 0MQ.
 
 	  http://github.com/zeromq/filemq
 
 comment "filemq needs a toolchain w/ C++, IPv6, largefile, wchar, threads"
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 && \
-		!BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R1
+	depends on BR2_USE_MMU
 	depends on !(BR2_INSTALL_LIBSTDCPP && BR2_INET_IPV6 && BR2_LARGEFILE \
 		&& BR2_USE_WCHAR && BR2_TOOLCHAIN_HAS_THREADS)