* Package:    net-vpn/vpnc-0.5.3_p550
 * Repository: gentoo
 * Maintainer: mmokrejs@gmail.com proxy-maint@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_musl gnutls kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *     5.5.13-gentoo
 * Checking for suitable kernel configuration options...
 *   CONFIG_TUN:	 is not set when it should be.
 * Please check to make sure these options are set correctly.
 * Failure to do so may cause unexpected problems.
>>> Unpacking source...
>>> Unpacking vpnc-0.5.3_p550.tar.xz to /var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work
>>> Source unpacked in /var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work
>>> Preparing source in /var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work/vpnc-0.5.3_p550 ...
 * Will build with GnuTLS (default) instead of OpenSSL so you may even redistribute binaries.
 * See the Makefile itself and https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440318
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work/vpnc-0.5.3_p550 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work/vpnc-0.5.3_p550 ...
make -j1 
LC_ALL=C perl -w ./enum2debug.pl isakmp.h >vpnc-debug.c 2>vpnc-debug.h
x86_64-gentoo-linux-musl-gcc -MM sysdep.c vpnc-debug.c isakmp-pkt.c tunip.c config.c dh.c math_group.c supp.c decrypt-utils.c crypto.c crypto-gnutls.c vpnc.c cisco-decrypt.c test-crypto.c -O2 -pipe -march=native -W -Wall -Wmissing-declarations -Wwrite-strings   -DCRYPTO_GNUTLS -DVERSION=\"0.5.3\" > .depend
x86_64-gentoo-linux-musl-gcc -O2 -pipe -march=native -W -Wall -Wmissing-declarations -Wwrite-strings   -DCRYPTO_GNUTLS -DVERSION=\"0.5.3\"  -c -o sysdep.o sysdep.c
In file included from sysdep.h:28,
                 from sysdep.c:71:
/usr/include/netinet/if_ether.h:113:8: error: redefinition of ‘struct ethhdr’
  113 | struct ethhdr {
      |        ^~~~~~
In file included from /usr/include/linux/if_tun.h:21,
                 from sysdep.c:62:
/usr/include/linux/if_ether.h:163:8: note: originally defined here
  163 | struct ethhdr {
      |        ^~~~~~
In file included from sysdep.c:71:
sysdep.h:41:10: fatal error: error.h: No such file or directory
   41 | #include <error.h>
      |          ^~~~~~~~~
compilation terminated.
make: *** [<builtin>: sysdep.o] Error 1
 * ERROR: net-vpn/vpnc-0.5.3_p550::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=net-vpn/vpnc-0.5.3_p550::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-vpn/vpnc-0.5.3_p550::gentoo'`.
 * The complete build log is located at '/var/log/portage/net-vpn:vpnc-0.5.3_p550:20200329-133134.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/net-vpn/vpnc-0.5.3_p550/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-vpn/vpnc-0.5.3_p550/temp/environment'.
 * Working directory: '/var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work/vpnc-0.5.3_p550'
 * S: '/var/tmp/portage/net-vpn/vpnc-0.5.3_p550/work/vpnc-0.5.3_p550'