X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=INSTALL;h=001d3cbea6760420d4c0867d65703ea1b7347f4d;hb=6d7d2ace1494936d11b8cabcec26c7e4d0fdda68;hp=5589fe7dd7203308bbec27a562cb9899d218577a;hpb=bbb8dee92d639331e8bd81823638267dcc895396;p=sliver-openvswitch.git

diff --git a/INSTALL b/INSTALL
index 5589fe7dd..001d3cbea 100644
--- a/INSTALL
+++ b/INSTALL
@@ -9,6 +9,7 @@ on a specific platform, please see one of these files:
     - INSTALL.Fedora
     - INSTALL.RHEL
     - INSTALL.XenServer
+    - INSTALL.NetBSD
 
 Build Requirements
 ------------------
@@ -18,8 +19,13 @@ you will need the following software:
 
     - GNU make.
 
-    - The GNU C compiler.  We generally test with version 4.1, 4.2, or
-      4.3.
+    - A C compiler, such as:
+
+        * GCC 4.x.
+
+        * Clang.  Clang 3.4 and later provide useful static semantic
+          analysis and thread-safety checks.  For Ubuntu, there are
+          nightly built packages available on clang's website.
 
     - libssl, from OpenSSL, is optional but recommended if you plan to
       connect the Open vSwitch to an OpenFlow controller.  libssl is
@@ -28,6 +34,8 @@ you will need the following software:
       libssl is installed, then Open vSwitch will automatically build
       with support for it.
 
+    - Python 2.x, for x >= 4.
+
 To compile the kernel module on Linux, you must also install the
 following.  If you cannot build or install the kernel module, you may
 use the userspace-only implementation, at a cost in performance.  The
@@ -76,21 +84,15 @@ or the database schema, you will also need the following software:
 
     - Automake version 1.10 or later.
 
-    - Python 2.x, for x >= 4.
-
-If you modify the ovsdbmonitor tool, then you will also need the
-following:
-
-    - pyuic4 from PyQt4 (http://www.riverbankcomputing.co.uk).
+    - libtool version 2.4 or later.  (Older versions might work too.)
 
 To run the unit tests, you also need:
 
     - Perl.  Version 5.10.1 is known to work.  Earlier versions should
       also work.
 
-If you modify the vswitchd database schema, then the E-R diagram in
-the ovs-vswitchd.conf.db(5) manpage will be updated properly only if
-you have the following:
+The ovs-vswitchd.conf.db(5) manpage will include an E-R diagram, in
+formats other than plain text, only if you have the following:
 
     - "dot" from graphviz (http://www.graphviz.org/).
 
@@ -107,6 +109,8 @@ installing the following to obtain better warnings:
 
     - GNU make.
 
+    - clang, version 3.4 or later
+
 Also, you may find the ovs-dev script found in utilities/ovs-dev.py useful.
 
 Installation Requirements
@@ -129,22 +133,6 @@ following software:
 On Linux you should ensure that /dev/urandom exists.  To support TAP
 devices, you must also ensure that /dev/net/tun exists.
 
-To run the ovsdbmonitor tool, the machine must also have the following
-software:
-
-    - Python 2.x, for x >= 4.
-
-    - Python Twisted Conch.
-
-    - Python JSON.
-
-    - PySide or PyQt4.
-
-    - Python Zope interface module.
-
-(On Debian "lenny" the above can be installed with "apt-get install
-python-json python-qt4 python-zopeinterface python-twisted-conch".)
-
 Building and Installing Open vSwitch for Linux, FreeBSD or NetBSD
 =================================================================
 
@@ -173,6 +161,10 @@ Prerequisites section, follow the procedure below to build.
 
       % ./configure CC=gcc-4.2
 
+   To use 'clang' compiler:
+
+      % ./configure CC=clang
+
    To build the Linux kernel module, so that you can run the
    kernel-based switch, pass the location of the kernel build
    directory on --with-linux.  For example, to build for a running
@@ -188,6 +180,11 @@ Prerequisites section, follow the procedure below to build.
 
       % ./configure --with-linux=/path/to/linux KARCH=mips
 
+   If you plan to do much Open vSwitch development, you might want to
+   add --enable-Werror, which adds the -Werror option to the compiler
+   command line, turning warnings into errors.  That makes it
+   impossible to miss warnings generated by the build.
+
    The configure script accepts a number of other options and honors
    additional environment variables.  For a full list, invoke
    configure with the --help option.