--- projects/cms/source/ihost/configure.in	2002/05/30 12:14:59	1.4
+++ projects/cms/source/ihost/configure.in	2002/05/31 09:42:42	1.5
@@ -1,31 +1,33 @@
+dnl configure.in for i-scream ihost
+dnl $Id: configure.in,v 1.5 2002/05/31 09:42:42 tdb Exp $
+
+dnl Change these to change the package name and version
 AC_INIT(ihost.c)
 AM_INIT_AUTOMAKE(ihost, 1.0rc1)
-dnl AC_CONFIG_SRCDIR([ihost.c])
+
+dnl The file we use to pass #define's to the source
 AM_CONFIG_HEADER([config.h])
 
+dnl We need a CC, install, and ranlib
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_RANLIB
 
-dnl AC_HEADER_DIRENT
+dnl And we probably need the standard C bits
 AC_HEADER_STDC
-dnl AC_CHECK_HEADERS([arpa/inet.h fcntl.h limits.h memory.h mntent.h netdb.h netinet/in.h stddef.h stdlib.h string.h sys/mount.h sys/param.h sys/socket.h sys/statvfs.h sys/time.h sys/vfs.h syslog.h unistd.h utmp.h])
 
-dnl AC_C_CONST
-dnl AC_TYPE_UID_T
-dnl AC_TYPE_PID_T
-dnl AC_TYPE_SIZE_T
-dnl AC_HEADER_TIME
-
-dnl AC_FUNC_FORK
+dnl The program needs to know whether it can use getloadavg
 AC_FUNC_GETLOADAVG
-dnl AC_FUNC_MALLOC
-dnl AC_CHECK_FUNCS([gethostbyname getmntent getmntinfo getpagesize inet_ntoa memmove memset socket strchr strdup strncasecmp strrchr strtol uname])
 
+dnl Figure out details about the host - we need the OS
 AC_CANONICAL_HOST
 
+dnl Default needing setgid kmem to false
 AM_CONDITIONAL([SETGIDKMEM], [false])
 
+dnl Set things up for different OS's
+dnl We define the name of the OS so the code can act accordingly
+dnl We also need to add the right LDFLAGS
 case $host_os in
 solaris2.*)
 	AC_DEFINE(SOLARIS, , [Building on Solaris 2.x])
@@ -34,6 +36,7 @@ solaris2.*)
 freebsd4.*)
 	AC_DEFINE(FREEBSD, , [Building on FreeBSD 4.x])
 	LDFLAGS="$LDFLAGS -lkvm"
+	dnl FreeBSD needs ihost to be setgid kmem
 	AM_CONDITIONAL([SETGIDKMEM], [true])
 	;;
 linux-gnu)
@@ -44,14 +47,20 @@ linux-gnu)
 	;;
 esac
 
+dnl Check for the --with-pid-file option
+dnl define accordingly for the code, and subst for the scripts
 AC_ARG_WITH([pid-file], AC_HELP_STRING([--with-pid-file=FILE],[location of PID file (default: /var/tmp/.ihost.pid)]), [pidfile=$withval], [pidfile=[/var/tmp/.ihost.pid]])
 AC_DEFINE_UNQUOTED([PID_FILE], ["$pidfile"], [Location of PID file])
 AC_SUBST([pidfile], [$pidfile])
 
+dnl Check for the --with-max-udp-size option
+dnl define accordingly for the code
 AC_ARG_WITH([max-udp-size], AC_HELP_STRING([--with-max-udp-size=SIZE],[maximum size of UDP packets in kilobytes (default: 8192kb)]), [max_udp_size=$withval], [max_udp_size=[8192]])
 AC_DEFINE_UNQUOTED([UDP_MAX_PACKET_SIZE], [$max_udp_size], [Maximum size of UDP packets in kilobytes])
 
+dnl Finally the files we'll want to change
 AC_CONFIG_FILES([Makefile libstatgrab/Makefile libukcprog/Makefile])
 AC_CONFIG_FILES([ihostchk.sh], [chmod ugo+x ihostchk.sh])
 
+dnl And finish :)
 AC_OUTPUT