diff --git a/package/hidapi/Config.in b/package/hidapi/Config.in
index 1d3c86b677..fa44288917 100644
--- a/package/hidapi/Config.in
+++ b/package/hidapi/Config.in
@@ -3,6 +3,8 @@ config BR2_PACKAGE_HIDAPI
 	depends on BR2_PACKAGE_HAS_UDEV
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libusb
+	depends on BR2_USE_MMU # libgudev
+	depends on BR2_USE_WCHAR # libgudev
 	select BR2_PACKAGE_LIBUSB
 	select BR2_PACKAGE_LIBGUDEV
 	select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
@@ -15,7 +17,9 @@ config BR2_PACKAGE_HIDAPI
 
 	  http://github.com/libusb/hidapi/
 
-comment "hidapi needs udev /dev management and a toolchain w/ NPTL, gcc >= 4.9"
+comment "hidapi needs udev /dev management and a toolchain w/ NPTL, gcc >= 4.9, wchar"
+	depends on BR2_USE_MMU
 	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
 		!BR2_PACKAGE_HAS_UDEV || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
+		!BR2_USE_WCHAR
diff --git a/package/libmanette/Config.in b/package/libmanette/Config.in
index 873f8d8b0b..d4f45e25ad 100644
--- a/package/libmanette/Config.in
+++ b/package/libmanette/Config.in
@@ -1,7 +1,7 @@
 config BR2_PACKAGE_LIBMANETTE
 	bool "libmanette"
-	depends on BR2_USE_MMU # libglib2
-	depends on BR2_USE_WCHAR # libglib2 -> gettext
+	depends on BR2_USE_MMU # libglib2, hidapi
+	depends on BR2_USE_WCHAR # libglib2, hidapi
 	depends on BR2_PACKAGE_HAS_UDEV # hidapi
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # hidapi
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
diff --git a/package/openfpgaloader/Config.in b/package/openfpgaloader/Config.in
index bd83ad415b..80305f1eba 100644
--- a/package/openfpgaloader/Config.in
+++ b/package/openfpgaloader/Config.in
@@ -17,12 +17,17 @@ config BR2_PACKAGE_OPENFPGALOADER_CMSIS
 	depends on BR2_PACKAGE_HAS_UDEV # hidapi
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # hidapi
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # hidapi -> libusb
+	depends on BR2_USE_MMU # hidapi
+	depends on BR2_USE_WCHAR # hidapi
 	select BR2_PACKAGE_HIDAPI
 	help
 	  openfpgaloader CMSIS-DAP support
 
-comment "openfpgaloader CMSIS-DAP needs udev /dev management and a toolchain w/ NPTL threads"
-	depends on !BR2_PACKAGE_HAS_UDEV || !BR2_TOOLCHAIN_HAS_THREADS_NPTL
+comment "openfpgaloader CMSIS-DAP needs udev /dev management and a toolchain w/ NPTL threads, gcc >= 4.9, wchar"
+	depends on BR2_USE_MMU
+	depends on !BR2_PACKAGE_HAS_UDEV || !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
+		!BR2_USE_WCHAR
 
 config BR2_PACKAGE_OPENFPGALOADER_LIBGPIOD
 	bool "libgpiod support"
diff --git a/package/openocd/Config.in b/package/openocd/Config.in
index a7e068f10d..2c2f6fe7aa 100644
--- a/package/openocd/Config.in
+++ b/package/openocd/Config.in
@@ -16,12 +16,21 @@ config BR2_PACKAGE_OPENOCD_CMSIS_DAP
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libusb
 	depends on BR2_PACKAGE_HAS_UDEV # hidapi
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # hidapi
+	depends on BR2_USE_MMU # hidapi
+	depends on BR2_USE_WCHAR # hidapi
 	select BR2_PACKAGE_LIBUSB
 	select BR2_PACKAGE_HIDAPI
 	help
 	  Enable support for CMSIS-DAP compliant debuggers (i.e
 	  Atmel/Microchip EDBG, etc.)
 
+comment "CMSIS-DAP support needs udev, toolchain w/ NPTL, gcc >= 4.9, wchar"
+	depends on BR2_USE_MMU
+	depends on !BR2_PACKAGE_HAS_UDEV || \
+		!BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
+		!BR2_USE_WCHAR || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+
 config BR2_PACKAGE_OPENOCD_FTDI
 	bool "MPSSE mode of FTDI based devices"
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb
diff --git a/package/python-hid/Config.in b/package/python-hid/Config.in
index 3a9e16c9f4..e46a5c2000 100644
--- a/package/python-hid/Config.in
+++ b/package/python-hid/Config.in
@@ -3,13 +3,17 @@ config BR2_PACKAGE_PYTHON_HID
 	depends on BR2_PACKAGE_HAS_UDEV # hidapi
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # hidapi
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # hidapi
+	depends on BR2_USE_MMU # hidapi
+	depends on BR2_USE_WCHAR # hidapi
 	select BR2_PACKAGE_HIDAPI
 	help
 	  ctypes bindings for hidapi.
 
 	  https://github.com/apmorton/pyhidapi
 
-comment "python-hid needs udev /dev management and a toolchain w/ NPTL, gcc >= 4.9"
+comment "python-hid needs udev /dev management and a toolchain w/ NPTL, gcc >= 4.9, wchar"
+	depends on BR2_USE_MMU
 	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
 		!BR2_PACKAGE_HAS_UDEV || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
+		!BR2_USE_WCHAR