bash-2.05b# sh ./configure checking for a BSD-compatible install... ./install-sh -c checking whether build environment is sane... yes checking for awk... awk checking whether make sets $(MAKE)... yes checking for bison... no checking for byacc... no checking for gcc... gcc checking for C compiler default output... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for style of include used by make... GNU checking dependency style of gcc... gcc3 checking for flex... no checking for lex... no checking for yywrap in -lfl... no checking for yywrap in -ll... no checking how to run the C preprocessor... gcc -E checking for egrep... grep -E checking for ANSI C header files... no checking for sys/wait.h that is POSIX.1 compatible... no checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... no checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... no checking for unistd.h... yes checking arpa/inet.h usability... yes checking arpa/inet.h presence... yes checking for arpa/inet.h... yes checking errno.h usability... yes checking errno.h presence... yes checking for errno.h... yes checking malloc.h usability... yes checking malloc.h presence... yes checking for malloc.h... yes checking stddef.h usability... yes checking stddef.h presence... yes checking for stddef.h... yes checking for stdlib.h... (cached) no checking for string.h... (cached) yes checking sys/socket.h usability... yes checking sys/socket.h presence... yes checking for sys/socket.h... yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking syslog.h usability... yes checking syslog.h presence... yes checking for syslog.h... yes checking for unistd.h... (cached) yes checking time.h usability... yes checking time.h presence... yes checking for time.h... yes checking assert.h usability... yes checking assert.h presence... yes checking for assert.h... yes checking sys/poll.h usability... yes checking sys/poll.h presence... yes checking for sys/poll.h... yes checking signal.h usability... no checking signal.h presence... yes configure: WARNING: signal.h: present but cannot be compiled configure: WARNING: signal.h: check for missing prerequisite headers? configure: WARNING: signal.h: proceeding with the preprocessor's result configure: WARNING: ## ------------------------------------ ## configure: WARNING: ## Report this to address@hidden ## configure: WARNING: ## ------------------------------------ ## checking for signal.h... yes checking pwd.h usability... yes checking pwd.h presence... yes checking for pwd.h... yes checking grp.h usability... yes checking grp.h presence... yes checking for grp.h... yes checking stdarg.h usability... yes checking stdarg.h presence... yes checking for stdarg.h... yes checking limits.h usability... yes checking limits.h presence... yes checking for limits.h... yes checking for sys/wait.h... (cached) no checking sched.h usability... no checking sched.h presence... yes configure: WARNING: sched.h: present but cannot be compiled configure: WARNING: sched.h: check for missing prerequisite headers? configure: WARNING: sched.h: proceeding with the preprocessor's result configure: WARNING: ## ------------------------------------ ## configure: WARNING: ## Report this to address@hidden ## configure: WARNING: ## ------------------------------------ ## checking for sched.h... yes checking sys/ioctl.h usability... yes checking sys/ioctl.h presence... yes checking for sys/ioctl.h... yes checking sys/uio.h usability... yes checking sys/uio.h presence... yes checking for sys/uio.h... yes checking whether time.h and sys/time.h may both be included... yes checking linux/types.h usability... no checking linux/types.h presence... no checking for linux/types.h... no checking for sys/types.h... (cached) yes checking for netinet/in_systm.h... yes checking for netinet/in.h... yes checking for netinet/ip.h... yes checking for netinet/ip_icmp.h... yes checking for struct sockaddr_in... yes checking for struct ip.ip_hl... yes checking for struct icmp.icmp_type... yes checking for struct icmp.icmp_code... yes checking for struct icmp.icmp_cksum... yes checking for struct icmp.icmp_seq... yes checking for struct icmp.icmp_id... yes checking for netinet/ip6.h... yes checking for netinet/icmp6.h... yes checking for struct sockaddr_in6... yes checking for struct icmp6_hdr.icmp6_type... yes checking for struct icmp6_hdr.icmp6_code... yes checking for struct icmp6_hdr.icmp6_cksum... yes checking for struct icmp6_hdr.icmp6_seq... yes checking for struct icmp6_hdr.icmp6_id... yes checking for an ANSI C-conforming const... yes checking for pid_t... yes checking for size_t... yes checking whether time.h and sys/time.h may both be included... (cached) yes checking whether struct tm is in sys/time.h or time.h... time.h checking for unistd.h... (cached) yes checking vfork.h usability... no checking vfork.h presence... no checking for vfork.h... no checking for fork... yes checking for vfork... yes checking for working fork... yes checking for working vfork... (cached) yes checking for stdlib.h... (cached) no checking for GNU libc compatible malloc... no checking return type of signal handlers... int checking for strftime... yes checking for gettimeofday... yes checking for inet_ntoa... yes checking for memset... yes checking for socket... yes checking for strdup... yes checking for strerror... yes checking for strpbrk... yes checking for poll... yes checking for vsyslog... no configure: error: some needed function is missing