mempool: fix slow allocation of large mempools

[dpdk.git] / doc / build-sdk-meson.txt

diff --git a/doc/build-sdk-meson.txt b/doc/build-sdk-meson.txt
index b5573f7..fc7fe37 100644 (file)
--- a/doc/build-sdk-meson.txt
+++ b/doc/build-sdk-meson.txt
@@ -1,11 +1,6 @@
 INSTALLING DPDK USING THE MESON BUILD SYSTEM
 ---------------------------------------------
 
-NOTE: Compiling and installing DPDK using ``meson`` and ``ninja``, rather
-than using ``make`` (GNU make) is EXPERIMENTAL. Official builds of DPDK
-should always be done using ``make``, as described in the ``Getting Started
-Guide`` documentation, and at "http://dpdk.org/doc/quick-start".
-
 Summary
 --------
 For many platforms, compiling and installing DPDK should work using the
@@ -37,8 +32,8 @@ The ``meson`` tool is used to configure a DPDK build. On most Linux
 distributions this can be got using the local package management system,
 e.g. ``dnf install meson`` or ``apt-get install meson``. If meson is not
 available as a suitable package, it can also be installed using the Python
-3 ``pip`` tool, e.g. ``pip3 install meson``. Version 0.42 of meson is
-recommended - if the version packaged is too old, the latest version is
+3 ``pip`` tool, e.g. ``pip3 install meson``. Version 0.47.1 of meson is
+required - if the version packaged is too old, the latest version is
 generally available from "pip".
 
 The other dependency for building is the ``ninja`` tool, which acts similar
@@ -85,6 +80,10 @@ Project-specific options are passed used -Doption=value::
 
        meson -Dmax_lcores=8 smallbuild  # scale build for smaller systems
 
+       meson -Denable_docs=true fullbuild  # build and install docs
+
+       meson -Dmachine=default  # use builder-independent baseline -march
+
 Examples of setting the same options using meson configure::
 
        meson configure -Dwerror=true
@@ -101,6 +100,9 @@ should be used to change the build settings within the directory, and when
 ``ninja`` is called to do the build itself, it will trigger the necessary
 re-scan from meson.
 
+NOTE: machine=default uses a config that works on all supported architectures
+regardless of the capabilities of the machine where the build is happening.
+
 As well as those settings taken from ``meson configure``, other options
 such as the compiler to use can be passed via environment variables. For
 example::
@@ -130,7 +132,7 @@ Installing the Compiled Files
 
 Use ``ninja install`` to install the required DPDK files onto the system.
 The install prefix defaults to ``/usr/local`` but can be used as with other
-options above. The environment variable ``DEST_DIR`` can be used to adjust
+options above. The environment variable ``DESTDIR`` can be used to adjust
 the root directory for the install, for example when packaging.
 
 With the base install directory, the individual directories for libraries
@@ -150,6 +152,22 @@ driver install path, so dynamically-linked applications can be run without
 having to pass in ``-d /path/to/driver`` options for standard drivers.
 
 
+Cross Compiling DPDK
+--------------------
+
+To cross-compile DPDK on a desired target machine we can use the following
+command::
+
+       meson cross-build --cross-file <target_machine_configuration>
+
+For example if the target machine is arm64 we can use the following
+command::
+       meson arm-build --cross-file config/arm/arm64_armv8_linux_gcc
+
+where config/arm/arm64_armv8_linux_gcc contains settings for the compilers
+and other build tools to be used, as well as characteristics of the target
+machine.
+
 Using the DPDK within an Application
 -------------------------------------