First, you should look at the file analhead.h. These are all user-settable options, but most of them you can override later. However, you do need to check the first few options in the file.
When you have done that, you need to compile the program. How to do that depends on which operating system you're using.
maketo compile the program. On most systems, that will be sufficient. If it fails to compile, have a look in the Makefile to see if there's anything that you need to change to suit your configuration, and try again. It says in that file what to do. In particular, Solaris 2 (SunOS 5) users need to change the LIBS= line (and may need to change the DEFS= line -- see below).
If you haven't got gcc, you will need to change the compiler - try acc or cc instead. If it still doesn't compile, try DEFS=-DNODNS to ignore the DNS lookup code.
There is a known problem with HP-UX 10 and some versions of gcc. If it complains about an error in the <sys/stat.h> library, you need to upgrade to gcc version 2.7.2.3 or later, or use HP's cc compiler. HP's compiler is not an ANSI C compiler by default, so you need to specify -Ae in the CFLAGS to tell the compiler to use ANSI C.
SunOS 4's cc and gcc don't have the necessary header files for ANSI C. If you have the ANSI C compiler acc, use that. Otherwise use the DEFS given in the Makefile.
SunOS 5 users need to change the LIBS= line in the Makefile. Also, this OS sometimes seems to have a broken strcmp() function. If you get an "illegal instruction" error when running analog, compile it with the -DNEED_STRCMP in the DEFS= line.
Compiling under VMS. First edit analhead.h as described above. Then type
MMSto compile analog. Under VMS 7.0 & 7.1, there is a VMS bug that stops analog compiling. The fix is to add "/define=(_VMS_V6_SOURCE)" to the cflags definitions at the top of the file descrip.mms.
Compiling under Acorn RiscOS. The Makefile is called Make.Risc, and you will have to rename it to Makefile before running make. Also you have to make directories called C, H and O, and move the sources files into the appropriate directories: e.g., alias.c must be renamed C.alias. And you will find that there are some filenames in the header file analhead.h that you want to change to fit into the RiscOS directory structure.
Compiling under OS/2. Although there is a precompiled version of analog for OS/2, if you want to compile your own you will need the EMX package. You should edit the Makefile to have OS=OS2 and LIBS=-lsocket. Then after editing analhead.h and running Make, you need to run the command
EMXBIND -b ANALOGto generate the analog.exe executable.
analogto run the program. (Or ./analog if for some reason . isn't in your $PATH.)
You can configure analog by putting commands in the configuration file, which is called analog.cfg by default. Two commands you will need straight away are
LOGFILE logfilename # to set where your logfile lives OUTFILE outputfile.html # to send the output to a file instead of the screenThe logfile must be stored locally -- analog won't use FTP or HTTP to fetch it from the internet. There's a sample logfile supplied with the program.
There's a list of basic commands later in the Readme. Also there are a few to get you started in the configuration file already, but there are lots of others available. You can read about all the commands in the section on customising analog. For help in interpreting the output, see What the results mean.
There is one other way to give options to analog, via command line arguments, given on the command line after the program name. These are just shortcuts for configuration file commands.