make[1]: Entering directory '/var/tmp/portage/sys-apps/iproute2-4.1.0/work/iproute2-4.1.0/tipc' x86_64-pc-linux-gnu-gcc -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wold-style-definition -Wformat=2 -O2 -march=native -pipe -I../include -DRESOLVE_HOSTNAMES -DLIBDIR=\"/lib64\" -DCONFDIR=\"/etc/iproute2\" -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -O2 -march=native -pipe -c -o tipc.o tipc.c In file included from bearer.h:15:0, from tipc.c:17: cmdl.h:15:27: fatal error: libmnl/libmnl.h: No such file or directory #include <libmnl/libmnl.h> ^ compilation terminated. <builtin>: recipe for target 'tipc.o' failed make[1]: *** [tipc.o] Error 1 make[1]: Leaving directory '/var/tmp/portage/sys-apps/iproute2-4.1.0/work/iproute2-4.1.0/tipc' Makefile:49: recipe for target 'all' failed Indeed, net-libs/libmnl was not installed. After emerging it, iproute2-4.1.0 emerged successfully.
same here
also happened to me, installing libmni fixed it
+ 30 Jun 2015; Lars Wendler <polynomial-c@gentoo.org> iproute2-4.1.0.ebuild: + Added net-libs/libmnl to RDEPEND (bug #553624). +