2000-03-29 16:38:44 +04:00
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<HTML><HEAD><TITLE>
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Building and Installing the Distribution
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</TITLE></HEAD><BODY><H3>
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Building and Installing the Distribution
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</H3>
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<H4>Building and Installing the Distribution</H4>
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As a practical matter, every computer architecture and operating system
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version seems to be different than any other. The device drivers may be
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different, the input/output system may bew idiosyncratic and the
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libraries may have different semantics. It is not possible in a software
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distribution such as this one to support every individual sysdtem with a
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common set of binaries, even with the same system but different
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versions. Therefore, it is necessary to configure each system
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individually for each system and version, both at compile time and at
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run time. In almost all cases, these procedures are completely automatic
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and all the newbie user need do is type "make" and the autoconfigure
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system does the rest. There are some exceptions, as noted below.
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<p>The autoconfigure system inspects the hardware and software
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environment and tests for the presence of system header files and the
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contents of these files to determine if certain features are available.
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When one or more of these features are present, the code is compiled to
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use them; if not, no special code is compiled. However, even if the code
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is compiled to use these features, the code does a special test at run
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time to see if one or more are actually present and avoids using them if
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not present. In such cases a warning message is sent to the system log,
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but the daemon should still work properly.
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Some programs included in this distribution use cryptographic algorithms
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to verify server authenticity and credentials. As required by the
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International Trade in Arms Regulations (ITAR), now called the Defense
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Trade Regulations (DTR), certain cryptographic products and media,
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including the Data Encryption Standard (DES), cannot be exported without
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per-instance license. For this reason, the DES encryption routine has
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been removed from the the current version, even though it is used only
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to compute a message digest. Current DTR regulations allow export of the
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the MD5 message digest routine, which is in fact the preferred
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algorithm, and this is included in the current
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version.
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<P>The NTP authentication routines conform to the interface used by RSA
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Laboratories in the <TT>rsaref20.zip</TT> package, which is downloadable
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from <TT>ftp.rsa.com</TT> or via the web at <TT>www.rsa.com</TT>.
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Outside the U.S. and Canada, the functionally identical
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<TT>rsaeuro.zip</TT> package is available from J.S.A. Kapp and other
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sources. The recommended way to integrate the DES routines in either
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package with the NTP build procedures is to copy the <TT>desc.c</TT>
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file from the <TT>./source</TT> directory in the package to the
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<TT>./libntp</TT> directory in the distribution. Then copy the header
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files <TT>rsaref.h</TT>, <TT>des.h</TT> and <TT>md2.h</TT> in the
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<TT>./source</TT> directory to the <TT>./include</TT> directory. Do not
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copy the <TT>global.h</TT> header file; the one in the distribution has
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been modified. These steps must be completed before the configuration
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process described below.
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<H4>Building and Installing under Unix</H4>
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Make sure that you have all necessary tools for building executables.
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These tools include <TT>cc/gcc, make, awk, sed, tr, sh, grep, egrep</TT>
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and a few others. Not all of these tools exist in the standard
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distribution of modern Unix versions (compilers are likely to be an
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add-on product - consider using the GNU tools and <TT>gcc</TT>
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compiler in this case). For a successful build, all of these tools
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should be accessible via the current path.
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<H4>Configuration</H4>
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Use the <TT>./configure</TT> command to perform an automatic
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configuration procedure. This procedure normally includes the debugging
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code, which can be useful in diagnosing problems found in initial test,
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and all reference clock drivers known to work with each machine and
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operating system. Unless memory space is at a premium, this is a
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sensible strategy and saves lots of messy fiddling. If you need to
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delete either the debugging code or one or more or all reference clock
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drivers to save space, see the <A HREF="config.htm">Configuration
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Options</A> page.
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<P>If your site supports multiple architectures and uses NFS to share
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files, you can use a single source tree to compile executables for all
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architectures. While running on a target architecture machine and with
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the distribution base directory active, create a subdirectory using a
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command like <TT>mkdir A.`config.guess`</TT>, which will create an
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architecture-specific directory with name peculiar to the architecture
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and operating system. Then change to this directory and configure with
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the <TT>../configure</TT> command. The remaining steps are the same
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whether building in the base directory or in the subdirectory.
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<H4>Compilation</H4>
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Peruse the operating-system-specific information for your architecture
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under <A HREF="hints.htm">Hints and Kinks</A>.
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<P>Use the <TT>make</TT> command to compile all source modules,
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construct the libraries and link the distribution. Expect few or no
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warnings using <TT>cc</TT> and a moderate level of warnings using
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<TT>gcc</TT>. Note: On some Unix platforms the use of <TT>gcc</TT> can
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result in quite a few complaints about system header files and type
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inconsistencies, especially about pointer variables. This is usually the
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case when the system header files are not up to ANSI standards or
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<TT>gcc</TT>-isms, when gcc is not installed properly, or when operating
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system updates and patches are applied and gcc is not reinstalled. While
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the autoconfigure process is quite thorough, the Unix programming
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cultures of the various workstation makers still remain idiosyncratic.
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<H4>Installation</H4>
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As root, use the <TT>make install</TT> command to install the binaries
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in the destination directory. You must of course have write permission
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on the install destination directory. This includes the programs <TT><A
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HREF="ntpd.htm">ntpd</A></TT> (the daemon), <TT><A
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HREF="ntpdc.htm">ntpdc</A></TT> (an <TT>ntpd</TT>-dependent query
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program), <TT><A HREF="ntpq.htm">ntpq</A></TT> (a standard query
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program), <TT><A HREF="ntpdate.htm">ntpdate</A></TT> (an <TT>rdate</TT>
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replacement for boot time date setting and sloppy time keeping) and
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<TT><A HREF="ntptrace.htm">ntptrace</A></TT> (a utility useful to find
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the primary (stratum-1) servers). In some systems, the <TT><A
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HREF="tickadj.htm">tickadj</A></TT> (a utility useful to adjust kernel
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variables) is installed. If the precision time kernel modifications are
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present, the <TT><A HREF="ntptime.htm">ntptime</A></TT> (a utility
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useful to debug kernel time functions) is installed.
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<P>You are now ready to configure the daemon and start it. You will need
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to create a NTP configuration file <TT>ntp.conf</TT> and possibly a
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cryptographic key file <TT>ntp.keys</TT>. Directions for doing that are
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in the <A HREF="notes.htm">Notes on Configuring NTP and Setting up a NTP
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Subnet</A>. The behavior when the daemon starts for the first time can
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be counterintuitive. To reduce the level of angst, see the <a
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href=quick.htm>Quick Start</a> page. A tutorial on debugging technique
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is in <A HREF="debug.htm">NTP Debugging Technique</A>.
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<P>If problems peculiar to the particular hardware and software
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environment (e.g. operating system -specific issues) are suspected,
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browse the <A HREF="hints.htm">Hints and Kinks</A> page.
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<P>Bug reports of a general nature can be sent to David Mills <A
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HREF="mailto: mills@udel.edu"><mills@udel.edu></A>. Bug reports of a
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specific nature on features implemented by the programmer corps
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mentioned in the <A HREF="copyright.htm">Copyright</A> page should be
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sent directly to the implementor listed in that page, with copy to
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mills@udel.edu.
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<P><B>Please include the version of the source distribution (e.g., ntp-
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4.0.70a) in your bug report.</B>
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<P><B>Please include the <B>output</B> of <TT>config.guess</TT> in your
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bug report.</B>
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<P><B>It will look something like: <TT>pdp11-dec-fuzzos3.4</TT></B>
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<P>Additional <TT>make</TT> commands
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<DL>
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<DT><TT>make clean</TT></DT>
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<DD>Cleans out object files, programs and temporary files.</DD>
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<DT><TT>make distclean</TT></DT>
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<DD>Does the work of <TT>clean</TT>, but cleans out all directories in
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preparation for a new distribution release.</DD>
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<DT><TT>make dist</TT></DT>
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<DD>
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Does the work of <TT>make distclean</TT>, but constructs compressed tar
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files for distribution. You must have GNU automake to perform this
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function.</DD>
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</DL>
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<H4>Building and Installing under Windows NT</H4>
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See <tt><a href="hints/winnt.htm">hints/winnt.htm</a> </tt>for directions
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to compile the sources and install the executables.
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2000-04-22 20:46:49 +04:00
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<hr><a href=index.htm>Home<address><a href="mailto:mills@udel.edu"> David L.
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2000-03-29 16:38:44 +04:00
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Mills <mills@udel.edu></a>
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</address></body></html>
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