# POSIX
AC_CHECK_HEADERS([arpa/inet.h glob.h grp.h netdb.h netinet/in.h \
- netinet/in_systm.h netinet/ip.h netinet/tcp.h pwd.h sched.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])
+AC_CHECK_HEADERS([netinet/ip.h], [], [],
+ [#include <sys/types.h>
+ #if HAVE_NETINET_IN_H
+ # include <netinet/in.h>
+ #endif
+ #if HAVE_NETINET_IN_SYSTM_H
+ # include <netinet/in_systm.h>
+ #endif
+ ])
AC_CHECK_HEADERS([regex.h], [HAVE_REGEX=1], [HAVE_REGEX=0])
AC_CHECK_HEADERS([sys/un.h], [HAVE_AF_UNIX=1], [HAVE_AF_UNIX=0])