diff --git a/package/ffmpeg/Config.in b/package/ffmpeg/Config.in
index 5f86f52c36..7ce0f3ac84 100644
--- a/package/ffmpeg/Config.in
+++ b/package/ffmpeg/Config.in
@@ -1,10 +1,15 @@
 comment "ffmpeg needs a toolchain w/ largefile, IPv6"
 	depends on !(BR2_LARGEFILE && BR2_INET_IPV6)
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
 
 menuconfig BR2_PACKAGE_FFMPEG
 	bool "ffmpeg"
 	depends on BR2_LARGEFILE
 	depends on BR2_INET_IPV6
+	# fenv.h lacks FE_INVALID, FE_OVERFLOW & FE_UNDERFLOW
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
+	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
 	help
 	  FFmpeg is a complete, cross-platform solution to record, convert
 	  and stream audio and video.