netdev - iproute2 compile and linking errors on Fedora 19

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Date:   Tue, 31 Oct 2017 10:58:46 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Phil Sutter <phil@....cc>,
        Stephen Hemminger <stephen@...workplumber.org>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: iproute2 compile and linking errors on Fedora 19

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.