Got some problems installing eggdrop 1.6.16, thought it was my fbsd that missed out on something (pretty lame when it comes to bsd...) but then I tried 1.6.15 and it worked fine.
Here is what it says:
checking for gcc... gcc
checking for C compiler default output file name... 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 how to run the C preprocessor... gcc -E
checking for egrep... grep -E
checking for AIX... no
checking for library containing strerror... none required
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether the compiler understands -pipe... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether make sets $(MAKE)... yes
checking for ranlib... ranlib
checking whether ln -s works... yes
checking whether head -1 works... yes
checking for gawk... no
checking for mawk... no
checking for nawk... nawk
checking for basename... basename
checking for uname... uname
checking system type... FreeBSD
checking system release... 5.1-RELEASE
checking for socket in -lsocket... no
checking for connect in -lnsl... no
checking for gethostbyname in -ldns... no
checking for dlopen in -ldl... no
checking for tan in -lm... yes
checking for pthread_mutex_init in -lpthread... no
checking for __pthread_mutex_init in -lpthread... no
checking for pthread_mutex_init in -lpthreads... no
checking for pthread_mutex_init... yes
checking for dirent.h that defines DIR... yes
checking for library containing opendir... none required
checking arpa/inet.h usability... yes
checking arpa/inet.h presence... yes
checking for arpa/inet.h... yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking locale.h usability... yes
checking locale.h presence... yes
checking for locale.h... yes
checking netdb.h usability... yes
checking netdb.h presence... yes
checking for netdb.h... yes
checking netinet/in.h usability... yes
checking netinet/in.h presence... yes
checking for netinet/in.h... yes
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking sys/file.h usability... yes
checking sys/file.h presence... yes
checking for sys/file.h... yes
checking sys/param.h usability... yes
checking sys/param.h presence... yes
checking for sys/param.h... yes
checking sys/rusage.h usability... no
checking sys/rusage.h presence... no
checking for sys/rusage.h... no
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... 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 for unistd.h... (cached) yes
checking wchar.h usability... yes
checking wchar.h presence... yes
checking for wchar.h... yes
checking whether time.h and sys/time.h may both be included... yes
checking for an ANSI C-conforming const... yes
checking whether byte ordering is bigendian... no
checking for inline... inline
checking for pid_t... yes
checking for size_t... yes
checking for working volatile... yes
checking for long... yes
checking size of long... 4
checking for int... yes
checking size of int... 4
checking for clock... yes
checking for dlopen... yes
checking for dprintf... no
checking for fsync... yes
checking for getdtablesize... yes
checking for getrusage... yes
checking for inet_aton... yes
checking for isascii... yes
checking for memcpy... yes
checking for memset... yes
checking for random... yes
checking for rename... yes
checking for setpgid... yes
checking for sigaction... yes
checking for sigemptyset... yes
checking for snprintf... yes
checking for srandom... yes
checking for strcasecmp... yes
checking for strncasecmp... yes
checking for uname... yes
checking for vsnprintf... yes
checking for sys/select.h... (cached) yes
checking for sys/socket.h... (cached) yes
checking types of arguments for select... int,fd_set *,struct timeval *
checking for vprintf... yes
checking for _doprnt... no
checking for strftime... yes
checking for broken libsafe sscanf... no
checking for Tcl library... found /usr/local/lib/libtcl80.so
checking for Tcl header... found /usr/local/include/tcl8.0/tcl.h
checking whether the Tcl system has changed... yes
checking for Tcl version... 8.0
checking for Tcl patch level... 8.0.5
checking for Tcl_Free in -ltcl80... yes
checking for TclpFinalizeThreadData in -ltcl80... no
configure: creating ./config.status
config.status: creating Makefile
config.status: creating doc/Makefile
config.status: creating scripts/Makefile
config.status: creating src/Makefile
config.status: creating src/compat/Makefile
config.status: creating src/md5/Makefile
config.status: creating src/mod/Makefile
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing replace-if-changed commands
lush.h is unchanged
config.status: executing catch-make-rebuild commands
Building ./src/mod/Makefile... done.
---
Checking for removed modules.................... done.
Detecting modules.................... done.
Calculating dependencies................... done.
Building ./src/mod/Makefile... done.
Configuring module 'compress'.
Running in eggdrop mode.
loading cache ../../../config.cache
checking for gcc... (cached) gcc
checking whether the C compiler (gcc ) works... yes
checking whether the C compiler (gcc ) is a cross-compiler... no
checking whether we are using GNU C... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gzopen in -lz... (cached) yes
checking how to run the C preprocessor... (cached) gcc -E
checking for zlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for getpagesize... (cached) yes
checking for working mmap... (cached) yes
updating cache ../../../config.cache
creating ./config.status
creating Makefile
creating compress_config.h
compress_config.h is unchanged
Configuring module 'dns'.
Running in eggdrop mode.
loading cache ../../../config.cache
checking for gcc... (cached) gcc
checking whether the C compiler (gcc ) works... yes
checking whether the C compiler (gcc ) is a cross-compiler... no
checking whether we are using GNU C... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for Cygwin environment... (cached) no
checking for res_init... (cached) yes
checking for res_mkquery... (cached) yes
updating cache ../../../config.cache
creating ./config.status
creating Makefile
Building ./src/mod/Makefile... done.
---
This may take a while. Go get some runts.
gcc -pipe -g -O2 -I.. -I.. -DHAVE_CONFIG_H -c ./botmsg.c
botmsg.c: In function `tandout_but':
botmsg.c:53: syntax error before "char"
botmsg.c: In function `simple_sprintf':
botmsg.c:147: syntax error before "char"
botmsg.c:154: syntax error before "char"
botmsg.c:159: syntax error before "int"
botmsg.c:164: syntax error before "int"
botmsg.c:169: syntax error before "unsigned"
botmsg.c:177: syntax error before "int"
botmsg.c: In function `botnet_send_priv':
botmsg.c:300: syntax error before "char"
botmsg.c:301: syntax error before "char"
botmsg.c:302: syntax error before "char"
botmsg.c:303: syntax error before "char"
*** Error code 1
Stop in /usr/home/floddy/eggdrop1.6.16/src.
*** Error code 1
Stop in /usr/home/floddy/eggdrop1.6.16.
rgds, Floddy