Hi, The latest iproute2 in git fails with the following compile error on Fedora 19 (I know it is very old!):
xfrm_state.c: In function ‘usage’: xfrm_state.c:104:36: error: ‘IPPROTO_MH’ undeclared (first use in this function) fprintf(stderr, "%s", strxf_proto(IPPROTO_MH)); ^ xfrm_state.c:104:36: note: each undeclared identifier is reported only once for each function it appears in make[1]: *** [xfrm_state.o] Error 1 make[1]: *** Waiting for unfinished jobs.... xfrm_policy.c: In function ‘usage’: xfrm_policy.c:77:36: error: ‘IPPROTO_MH’ undeclared (first use in this function) fprintf(stderr, "%s", strxf_proto(IPPROTO_MH)); ^ xfrm_policy.c:77:36: note: each undeclared identifier is reported only once for each function it appears in make[1]: *** [xfrm_policy.o] Error 1 ipxfrm.c: In function ‘xfrm_selector_print’: ipxfrm.c:479:7: error: ‘IPPROTO_MH’ undeclared (first use in this function) case IPPROTO_MH: ^ ipxfrm.c:479:7: note: each undeclared identifier is reported only once for each function it appears in ipxfrm.c: In function ‘xfrm_selector_upspec_parse’: ipxfrm.c:1345:8: error: ‘IPPROTO_MH’ undeclared (first use in this function) case IPPROTO_MH: ^ After fixing it manually by including <xtables.h> in each of these C files, the compilation is okay but now it fails with linking errors: xfrm_state.o: In function `xfrm_state_modify.constprop.3': xfrm_state.c:(.text+0x2337): undefined reference to `strlcpy' ipnetns.o: In function `netns_identify_pid': ipnetns.c:(.text+0x10fd): undefined reference to `strlcpy' ipxfrm.o: In function `xfrm_state_info_print': ipxfrm.c:(.text+0x1a2a): undefined reference to `strlcat' ipxfrm.c:(.text+0x1a3c): undefined reference to `strlcat' ipxfrm.c:(.text+0x1eff): undefined reference to `strlcat' ipxfrm.o: In function `xfrm_policy_info_print': ipxfrm.c:(.text+0x2010): undefined reference to `strlcat' ipxfrm.c:(.text+0x2022): undefined reference to `strlcat' iproute_lwtunnel.o: In function `parse_encap_seg6': iproute_lwtunnel.c:(.text+0xa4f): undefined reference to `strlcpy' ipvrf.o: In function `vrf_switch': ipvrf.c:(.text+0x7be): undefined reference to `strlcpy' ipvrf.o: In function `vrf_identify.constprop.2': ipvrf.c:(.text+0xdbd): undefined reference to `strlcpy' ../lib/libutil.a(bpf.o): In function `bpf_find_mntpt.constprop.10': bpf.c:(.text+0x64e): undefined reference to `strlcpy' ../lib/libutil.a(bpf.o): In function `bpf_get_work_dir': bpf.c:(.text+0x99f): undefined reference to `strlcpy' ../lib/libutil.a(fs.o):fs.c:(.text+0x3df): more undefined references to `strlcpy' follow collect2: error: ld returned 1 exit status make[1]: *** [ip] Error 1 make[1]: Leaving directory `/root/iproute2/ip' make: *** [all] Error 2 This is the GCC on Fedora 19: # gcc -v Using built-in specs. COLLECT_GCC=/bin/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.3/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-isl=/builddir/build/BUILD/gcc-4.8.3-20140911/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.3-20140911/obj-x86_64-redhat-linux/cloog-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.8.3 20140911 (Red Hat 4.8.3-7) (GCC) I don't know if people still care about it. I think iproute2 should compile with older kernels/distros. I can dig this deeper when I have time. Thanks.