TABLE OF CONTENTS ================= Table Of Contents Quick Instructions * Net-SNMP Specific Information Long (but you should read these) Instructions Installing the Perl/SNMP Module * Compilers and Options Compiling For Multiple Architectures Installation Names Optional Features Sharing Defaults Operation Controls * = required reading QUICK INSTRUCTIONS ================== 1) Run ./configure (type "./configure --help" for a quick usage summary.) (--prefix=PATH will change the default /usr/local installation path.) (see "Compilers and Options" on changing the compiler to use) 2) Optionally edit include/net-snmp/net-snmp-config.h (due to prompting done by the configure script, this is very rarely necessary.) 3) make 4) Run the next command as root: 5) make install 6) configure the agent (either using 'snmpconf' or by crafting an snmpd.conf file manually. The file 'EXAMPLE.conf' may be a suitable starting point) Note: By default, everything will be installed in /usr/local. (see below for more instructions) Net-SNMP Specific Information ============================= As of UCD-SNMP V3.3.1 the configuration files are now looked for in $(prefix)/share/snmp, where ($prefix) is defined as the value passed to the --prefix argument of the configure script, or /usr/local if undefined. In version 3.0.3 till 3.3, the files were kept in $(prefix)/lib/snmp Optional features to pass to configure for Net-SNMP can be obtained by running configure --help. LONG (but you should read these) INSTRUCTIONS ============================================= The `configure' shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile' in each directory of the package. It may also create one or more `.h' files containing system-dependent definitions. Finally, it creates a shell script `config.status' that you can run in the future to recreate the current configuration, a file `config.cache' that saves the results of its tests to speed up reconfiguring, a file `config.log' containing compiler output (useful mainly for debugging `configure') and a file `configure-summary' containing the summary displayed at the end of the `configure' run. The file `include/net-snmp/net-snmp-config.h' is also generated at this time. It contains IMPORTANT information such as the location of log and configuration files. In some special cases you may need to modify this file but it is prefererable to work out a way of getting `configure' to set things up for your particular environment. As the `configure' invocation often gets lengthy and difficult to type or if you have several different ways you want to configure a system, you may want to create a shell script containing your invocation. If you need to do unusual things to compile the package, please try to figure out how `configure' could check whether to do them, and mail diffs or instructions to the address given in the `README' so they can be considered for the next release. If at some point `config.cache' contains results you don't want to keep, you may remove or edit it. The file `configure.in' is used to create `configure' by a program called `autoconf'. You only need `configure.in' if you want to change it or regenerate `configure' using a newer version of `autoconf'. The simplest way to compile this package is: 1. `cd' to the directory containing the package's source code and type `./configure' to configure the package for your system. If you're using `csh' on an old version of System V, you might need to type `sh ./configure' instead to prevent `csh' from trying to execute `configure' itself. Running `configure' takes awhile. While running, it prints some messages telling which features it is checking for. When it completes it prints a short message (also available in configure-summary) indicating what functionality will be available when compiled. 2. If necessary, edit include/net-snmp/net-snmp-config.h (see above). 3. Type `make' to compile the package. 4. Type `make test' which runs a variety of tests to see what functionality has been incorporated and if it works. 5. Type `make install' to install the programs and any data files and documentation. 6. You can remove the program binaries and object files from the source code directory by typing `make clean'. To also remove the files that `configure' created (so you can compile the package for a different kind of computer), type `make distclean'. 7. You can remove the application by typing `make uninstall'. There may be additional installation issues discussed in the README's for various platforms such as README.solaris. Installing the Perl/SNMP Module =============================== The Perl/SNMP Module is now bundled with the net-snmp package (which includes other Net-SNMP specific modules as well), all of which are located in the net-snmp/perl directory. The Perl package provides a high level abstract interface to the functionality found in the Net-SNMP libraries and demon applications. It is recommended you install the perl modules as you build the Net-SNMP package. The configure script can be run as follows to automatically find perl and use it to install the perl modules: ./configure --with-perl-modules If you wish to use the embedded perl support available in the Net-SNMP agent (and starting in Net-SNMP 5.2, the trap receiver), then use the following option instead: ./configure --enable-embedded-perl --enable-shared Starting with Net-SNMP 5.4, configure enables embedded Perl and the Perl modules by default when possible unless explicitly disabled. If you wish to build the perl modules by hand, *install Net-SNMP first* and then change directories to the perl subdirectory and: Run: cd perl perl Makefile.PL make make test make install (as root) Compilers and Options ===================== Some systems require unusual options for compilation or linking that the `configure' script does not know about. You can give `configure' initial values for variables by setting them in the environment. Using a Bourne-compatible shell, you can do that on the command line like this: CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure Or on systems that have the `env' program, you can do it like this: env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure Compiling For Multiple Architectures ==================================== You can compile the package for more than one kind of computer at the same time, by placing the object files for each architecture in their own directory. To do this, you must use a version of `make' that supports the `VPATH' variable, such as GNU `make'. `cd' to the directory where you want the object files and executables to go and run the `configure' script. `configure' automatically checks for the source code in the directory that `configure' is in and in `..'. If you have to use a `make' that does not supports the `VPATH' variable, there is a `maketarget' script that will generate a symlink'ed shadow-directory for the object files. Do a `sh maketarget', then `cd' into targets/`config.guess` and do the configuration and installation. Installation Names ================== By default, `make install' will install the package's files in `/usr/local/bin', `/usr/local/man', etc. You can specify an installation prefix other than `/usr/local' by giving `configure' the option `--prefix=PATH'. You can specify separate installation prefixes for architecture-specific files and architecture-independent files. If you give `configure' the option `--exec-prefix=PATH', the package will use PATH as the prefix for installing programs and libraries. Documentation and other data files will still use the regular prefix. If the package supports it, you can cause programs to be installed with an extra prefix or suffix on their names by giving `configure' the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. Optional Features ================= Some packages pay attention to `--enable-FEATURE' options to `configure', where FEATURE indicates an optional part of the package. They may also pay attention to `--with-PACKAGE' options, where PACKAGE is something like `gnu-as' or `x' (for the X Window System). The `README' should mention any `--enable-' and `--with-' options that the package recognizes. For packages that use the X Window System, `configure' can usually find the X include and library files automatically, but if it doesn't, you can use the `configure' options `--x-includes=DIR' and `--x-libraries=DIR' to specify their locations. Specifying the System Type ========================== There may be some features `configure' can not figure out automatically, but needs to determine by the type of host the package will run on. Usually `configure' can figure that out, but if it prints a message saying it can not guess the host type, give it the `--host=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name with three fields: CPU-COMPANY-SYSTEM See the file `config.sub' for the possible values of each field. If `config.sub' isn't included in this package, then this package doesn't need to know the host type. If you are building compiler tools for cross-compiling, you can also use the `--target=TYPE' option to select the type of system they will produce code for and the `--build=TYPE' option to select the type of system on which you are compiling the package. Sharing Defaults ================ If you want to set default values for `configure' scripts to share, you can create a site shell script called `config.site' that gives default values for variables like `CC', `cache_file', and `prefix'. `configure' looks for `PREFIX/share/config.site' if it exists, then `PREFIX/etc/config.site' if it exists. Or, you can set the `CONFIG_SITE' environment variable to the location of the site script. A warning: not all `configure' scripts look for a site script. Operation Controls ================== `configure' recognizes the following options to control how it operates. `--cache-file=FILE' Use and save the results of the tests in FILE instead of `./config.cache'. Set FILE to `/dev/null' to disable caching, for debugging `configure'. `--help' Print a summary of the options to `configure', and exit. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. `--srcdir=DIR' Look for the package's source code in directory DIR. Usually `configure' can determine that directory automatically. `--version' Print the version of Autoconf used to generate the `configure' script, and exit. `configure' also accepts some other, not widely useful, options.
Last modified: Thursday, 26-May-2011 23:21:31 UTC
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