exec plugin: Use `setgroups' to set the list of supplementary group IDs.

[collectd.git] / README

diff --git a/README b/README
index f1d7860..37eee3e 100644 (file)
--- a/README
+++ b/README
@@ -218,8 +218,8 @@ Operation
   * When the `csv' or `rrdtool' plugins are loaded they'll write the values to
     files. The usual place for these files is beneath `/var/lib/collectd'.
 
-  * When using some of the plugins, collectd needs to run as user root, since only
-    root can do certain things, such as craft ICMP packages needed to ping
+  * When using some of the plugins, collectd needs to run as user root, since
+    only root can do certain things, such as craft ICMP packages needed to ping
     other hosts. collectd should NOT be installed setuid root since it can be
     used to overwrite valuable files!
 
@@ -306,23 +306,46 @@ Prerequisites
     particular.
 
 
+Configuring / Compiling / Installing
+------------------------------------
+
+  To configure, build and install collectd with the default settings, run
+  `./configure && make && make install'.  For detailed, generic instructions
+  see INSTALL. For a complete list of configure options and their description,
+  run `./configure --help'.
+  
+  By default, the configure script will check for all build dependencies and
+  disable all plugins whose requirements cannot be fulfilled (any other plugin
+  will be enabled). To enable a plugin, install missing dependencies (see
+  section `Prerequisites' above) and rerun `configure'. If you specify the
+  `--enable-<plugin>' configure option, you can force the plugin to be built.
+  This will most likely fail though unless you're working in a very unusual
+  setup and you really know what you're doing.
+
+  By default, collectd will be installed into `/opt/collectd'. You can adjust
+  this setting by specifying the `--prefix' configure option - see INSTALL for
+  details. If you pass DESTDIR=<path> to `make install', <path> will be
+  prefixed to all installation directories. This might be useful when creating
+  packages for collectd.
+
+
 Crosscompiling
 --------------
 
-    To compile correctly collectd needs to be able to initialize static
-    variables to NAN (Not A Number). Some C libraries, especially the GNU
-    libc, have a problem with that.
+  To compile correctly collectd needs to be able to initialize static
+  variables to NAN (Not A Number). Some C libraries, especially the GNU
+  libc, have a problem with that.
 
-    Luckily, with GCC it's possible to work around that problem: One can define
-    NAN as being (0.0 / 0.0) and `isnan' as `f != f'. However, to test this
-    ``implementation'' the configure script needs to compile and run a short
-    test program. Obviously running a test program when doing a cross-
-    compilation is, well, challenging.
+  Luckily, with GCC it's possible to work around that problem: One can define
+  NAN as being (0.0 / 0.0) and `isnan' as `f != f'. However, to test this
+  ``implementation'' the configure script needs to compile and run a short
+  test program. Obviously running a test program when doing a cross-
+  compilation is, well, challenging.
 
-    If you run into this problem, you can use the `--with-nan-emulation'
-    configure option to force the use of this implementation. We can't promise
-    that the compiled binary actually behaves as it should, but since NANs
-    are likely never passed to the libm you have a good chance to be lucky.
+  If you run into this problem, you can use the `--with-nan-emulation'
+  configure option to force the use of this implementation. We can't promise
+  that the compiled binary actually behaves as it should, but since NANs
+  are likely never passed to the libm you have a good chance to be lucky.
 
 
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