X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=INSTALL.Linux;h=652911865a22e6103163967fdae3a3e172866871;hb=b89d8339252cd330daca7341bbd76c7316080127;hp=38b0269a1cbc5d08ae9fd4ed45a7436fa81876f3;hpb=3fbe1d307e27ed99528d83cf866c7df497e58b77;p=openvswitch

diff --git a/INSTALL.Linux b/INSTALL.Linux
index 38b0269a..65291186 100644
--- a/INSTALL.Linux
+++ b/INSTALL.Linux
@@ -27,8 +27,15 @@ you will need the following software:
       connections from an Open vSwitch to an OpenFlow controller.  To
       enable, configure with --enable-ssl=yes.
 
-To compile the kernel module (which is required for operation), you
-must also install the following:
+    - libpcre, the Perl Compatible Regular Expression library, is
+      optional but recommended.  Without it, OVSDB will not be able to
+      validate regular-expression based contraints.
+
+To compile the kernel module, 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
+userspace implementation may also lack some features.  Refer to
+INSTALL.userspace for more information.
 
     - A supported Linux kernel version.  Please refer to README for a
       list of supported versions.
@@ -58,12 +65,14 @@ If you are working from a Git tree or snapshot (instead of from a
 distribution tarball), or if you modify the Open vSwitch build system,
 you will also need the following software:
 
-    - Autoconf version 2.60 or later.
+    - Autoconf version 2.63 or later.
 
     - Automake version 1.10 or later.
 
     - pkg-config.  We test with version 0.22.
 
+    - Python 2.x, for x >= 4.
+
 Installation Requirements
 -------------------------
 
@@ -75,6 +84,9 @@ following software:
     - libssl compatible with the libssl used for build, if OpenSSL was
       used for the build.
 
+    - libpcre compatible with the libpcre used for build, if PCRE was
+      used for the build.
+
     - The Linux kernel version configured as part of the build.
 
     - For optional support of ingress policing, the "tc" program from
@@ -92,7 +104,12 @@ Building and Installing Open vSwitch for Linux
 Once you have installed all the prerequisites listed above in the Base
 Prerequisites section, follow the procedure below to build.
 
-1. In the top source directory, configure the package by running the
+1. If you pulled the sources directly from an Open vSwitch Git tree, 
+   run boot.sh in the top source directory:
+
+      % ./boot.sh
+
+2. In the top source directory, configure the package by running the
    configure script.  You can usually invoke configure without any
    arguments:
 
@@ -128,16 +145,16 @@ Prerequisites section, follow the procedure below to build.
    additional environment variables.  For a full list, invoke
    configure with the --help option.
 
-2. Run make in the top source directory: 
+3. Run make in the top source directory: 
 
       % make
 
-3. Become root by running "su" or another program.
+4. Become root by running "su" or another program.
 
-4. Run "make install" to install the executables and manpages into the
+5. Run "make install" to install the executables and manpages into the
    running system, by default under /usr/local.
 
-5. If you built kernel modules, you may load them with "insmod", e.g.:
+6. If you built kernel modules, you may load them with "insmod", e.g.:
 
       % insmod datapath/linux-2.6/openvswitch_mod.ko