dlenksi/openconnect under openbsd-current

# compiling: https://github.com/dlenski/openconnect
# for: --protocol gp

make  all-recursive
  CC       libopenconnect_la-gpst.lo
In file included from gpst.c:45:
/usr/include/netinet/ip.h:67: error: field 'ip_src' has incomplete type
/usr/include/netinet/ip.h:67: error: field 'ip_dst' has incomplete type
/usr/include/netinet/ip.h:181: error: field 'ipt_addr' has incomplete type
In file included from gpst.c:46:
/usr/include/netinet/ip_icmp.h:71: error: field 'ih_gwaddr' has incomplete type
Error while executing gcc -DHAVE_CONFIG_H -I. -DLOCALEDIR="/usr/local/share/locale" -I/usr/local/include -Wall -Wextra -Wno-missing-field-initializers -Wno-sign-compare -Wno-unused-parameter -Werror=pointer-to-int-cast -Wdeclaration-after-statement -Werror-implicit-function-declaration -Wformat-nonliteral -Wformat-security -Winit-self -Wmissing-declarations -Wmissing-include-dirs -Wnested-externs -Wpointer-arith -Wwrite-strings -I/usr/local/include -I/usr/local/include/p11-kit-1 -I/usr/local/include/libxml2 -I/usr/local/include -I/usr/local/include -I/usr/local/include/p11-kit-1 -I/usr/local/include/pskc -I/usr/local/include -I/usr/local/include/PCSC -pthread -I/usr/local/include -g -O2 -MT libopenconnect_la-gpst.lo -MD -MP -MF .deps/libopenconnect_la-gpst.Tpo -c gpst.c -fPIC -DPIC -o .libs/libopenconnect_la-gpst.o
*** Error 1 in . (Makefile:1132 'libopenconnect_la-gpst.lo': @echo "  CC      " libopenconnect_la-gpst.lo;/usr/bin/libtool --silent --tag=CC...)
*** Error 1 in /src/openconnect (Makefile:715 'all')