package/libmicrohttpd: mark as broken on Nios II, infamous _gp issue

Fixes
http://autobuild.buildroot.net/results/76f/76f838b2b33311897f3c2ce82a65f3b73af2c046/

Propagate reverse dependency to janus-gateway. I did not propagate the
reverse dependency to kodi, ola and systemd because they are not
available for nios.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/janus-gateway/Config.in

@@ -11,6 +11,8 @@ config BR2_PACKAGE_JANUS_GATEWAY
 	depends on BR2_USE_WCHAR # libnice -> libglib2
 	depends on BR2_USE_MMU # libnice
 	depends on !BR2_STATIC_LIBS # dlopen
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305 # libmicrohttpd
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405 # libmicrohttpd
 	help
 	  Janus is an open source, general purpose, WebRTC gateway
 	  designed and developed by Meetecho.
@@ -20,3 +22,5 @@ config BR2_PACKAGE_JANUS_GATEWAY
 comment "janus-gateway needs a toolchain w/ dynamic library, threads, wchar"
 	depends on BR2_USE_MMU
 	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405

package/libmicrohttpd/Config.in

@@ -1,6 +1,9 @@
 config BR2_PACKAGE_LIBMICROHTTPD
 	bool "libmicrohttpd"
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	# Triggers the _gp link issue
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
 	help
 	  GNU libmicrohttpd is a small C library that makes it easy to
 	  run an HTTP server as part of another application.
@@ -24,3 +27,5 @@ endif
 
 comment "libmicrohttpd needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405