AC_CHECK_HEADERS([arpa/inet.h glob.h grp.h netdb.h netinet/in.h \
netinet/in_systm.h netinet/tcp.h pwd.h sched.h \
sys/mman.h sys/resource.h sys/select.h sys/socket.h sys/wait.h \
- syslog.h])
+ syslog.h sys/dl.h dlfcn.h])
AC_CHECK_HEADERS([netinet/ip.h], [], [],
[#include <sys/types.h>
#if HAVE_NETINET_IN_H