Just creating a bug entry to log this, as I have already found a fix in buildroot. On a system using sys-libs/uclibc-ng up to at least ~1.0.25, iproute2-4.12.0 will fail due to the following undeclared symbol: mips-unknown-linux-uclibc-gcc -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wold-style-definition -Wformat=2 -Os -march=rm7000 -mtune=rm700 0 -pipe -mplt -fomit-frame-pointer -I../include -DRESOLVE_HOSTNAMES -DLIBDIR=\"/lib\" -DCONFDIR=\"/etc/iproute2\" -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_ SOURCE -D_LARGEFILE64_SOURCE -Os -march=rm7000 -mtune=rm7000 -pipe -mplt -fomit-frame-pointer -DHAVE_SETNS -c -o ipxfrm.o ipxfrm.c ipxfrm.c: In function 'xfrm_selector_print': ipxfrm.c:490:7: error: 'IPPROTO_MH' undeclared (first use in this function) case IPPROTO_MH: ^~~~~~~~~~ ipxfrm.c:490:7: note: each undeclared identifier is reported only once for each function it appears in ipxfrm.c: In function 'xfrm_selector_upspec_parse': ipxfrm.c:1356:8: error: 'IPPROTO_MH' undeclared (first use in this function) case IPPROTO_MH: ^~~~~~~~~~ make[1]: *** [<builtin>: ipxfrm.o] Error 1 make[1]: Leaving directory '/usr/obj/portage/sys-apps/iproute2-4.12.0/work/iproute2-4.12.0/ip' make: *** [Makefile:65: all] Error 2 This is caused by uclibc-ng's netinet/in.h lacking a definition for 'IPPROTO_MH'. A compatibility fix is available from the following buildroot patch: https://git.busybox.net/buildroot/commit/?id=c12e01cc2c3133bfb9f53ab0486c6d7bf909d089 I am unable to locate a source or git commit for the commit id cited in that patch, so it might be a private repo or such. Based on the patch notes, this is a temporary workaround until uclibc-ng upstream syncs some header files with glibc. Running a test compile now to make sure this fixes things.
Confirmed that the compile error is resolved. Updated iproute2-4.12.0.ebuild w/o revision, as this is a build-fix only.
