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Merge branch 'mainstream'
[sliver-openvswitch.git]
/
INSTALL
diff --git
a/INSTALL
b/INSTALL
index
4749e30
..
4c54b59
100644
(file)
--- a/
INSTALL
+++ b/
INSTALL
@@
-18,8
+18,13
@@
you will need the following software:
- GNU make.
- 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
- libssl, from OpenSSL, is optional but recommended if you plan to
connect the Open vSwitch to an OpenFlow controller. libssl is
@@
-107,6
+112,10
@@
installing the following to obtain better warnings:
- GNU make.
- 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
-------------------------
Installation Requirements
-------------------------
@@
-171,6
+180,10
@@
Prerequisites section, follow the procedure below to build.
% ./configure CC=gcc-4.2
% ./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
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
@@
-209,15
+222,15
@@
Prerequisites section, follow the procedure below to build.
6. Run "make install" to install the executables and manpages into the
running system, by default under /usr/local.
6. Run "make install" to install the executables and manpages into the
running system, by default under /usr/local.
-7. If you built kernel modules, you may
load them with "insmod"
, e.g.:
+7. If you built kernel modules, you may
install and load them
, e.g.:
- % insmod datapath/linux/openvswitch.ko
+ % make modules_install
+ % /sbin/modprobe openvswitch
- You may need to specify a full path to insmod, e.g. /sbin/insmod.
To verify that the modules have been loaded, run "/sbin/lsmod" and
check that openvswitch is listed.
To verify that the modules have been loaded, run "/sbin/lsmod" and
check that openvswitch is listed.
- If the "
insmod
" operation fails, look at the last few kernel log
+ If the "
modprobe
" operation fails, look at the last few kernel log
messages (e.g. with "dmesg | tail"):
- The message "openvswitch: exports duplicate symbol
messages (e.g. with "dmesg | tail"):
- The message "openvswitch: exports duplicate symbol
@@
-264,11
+277,6
@@
Prerequisites section, follow the procedure below to build.
you do not understand what this means or do not know if your driver
will work, do not set this.
you do not understand what this means or do not know if your driver
will work, do not set this.
- Once you verify that the kernel modules load properly, you should
- install them:
-
- % make modules_install
-
8. Initialize the configuration database using ovsdb-tool, e.g.:
% mkdir -p /usr/local/etc/openvswitch
8. Initialize the configuration database using ovsdb-tool, e.g.:
% mkdir -p /usr/local/etc/openvswitch