[dpdk-dev] [PATCH v3 01/17] build: add initial infrastructure for meson & ninja builds

[Bruce Richardson <bruce.richardson@intel.com>]

To build with meson and ninja, we need some initial infrastructure in
place. The build files for meson always need to be called "meson.build",
and options get placed in meson_options.txt

This commit adds a top-level meson.build file, which sets up the global
variables for tracking drivers, libraries, etc., and then includes other
build files, before finishing by writing the global build configuration
header file and a DPDK pkgconfig file at the end, using some of those same
globals.

>From the top level build file, the only include file thus far is for the
config folder, which does some other setup of global configuration
parameters, including pulling in architecture specific parameters from an
architectural subdirectory. A number of configuration build options are
provided for the project to tune a number of global variables which will be
used later e.g. max numa nodes, max cores, etc. These settings all make
their way to the global build config header "rte_build_config.h". There is
also a file "rte_config.h", which includes "rte_build_config.h", and this
file is meant to hold other build-time values which are present in our
current static build configuration but are not normally meant for
user-configuration. Ideally, over time, the values placed here should be
moved to the individual libraries or drivers which want those values.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 config/meson.build     | 72 +++++++++++++++++++++++++++++++++++++++++++
 config/rte_config.h    | 50 ++++++++++++++++++++++++++++++
 config/x86/meson.build | 70 ++++++++++++++++++++++++++++++++++++++++++
 meson.build            | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
 meson_options.txt      |  6 ++++
 5 files changed, 281 insertions(+)
 create mode 100644 config/meson.build
 create mode 100644 config/rte_config.h
 create mode 100644 config/x86/meson.build
 create mode 100644 meson.build
 create mode 100644 meson_options.txt

diff --git a/config/meson.build b/config/meson.build
new file mode 100644
index 000000000..b57a7e64b
--- /dev/null
+++ b/config/meson.build
@@ -0,0 +1,72 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2017 Intel Corporation.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# set the machine type and cflags for it
+machine = get_option('machine')
+dpdk_conf.set('RTE_MACHINE', machine)
+add_project_arguments('-march=@0@'.format(machine), language: 'c')
+# some libs depend on maths lib
+add_project_link_arguments('-lm', language: 'c')
+
+# add -include rte_config to cflags
+add_project_arguments('-include', 'rte_config.h', language: 'c')
+
+# enable extra warnings and disable any unwanted warnings
+warning_flags = [
+	'-Wsign-compare',
+	'-Wcast-qual',
+	'-Wno-address-of-packed-member',
+	'-Wno-format-truncation'
+]
+foreach arg: warning_flags
+	if cc.has_argument(arg)
+		add_project_arguments(arg, language: 'c')
+	endif
+endforeach
+
+compile_time_cpuflags = []
+if host_machine.cpu_family().startswith('x86')
+	arch_subdir = 'x86'
+	subdir(arch_subdir)
+endif
+dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
+
+# set the install path for the drivers
+dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', join_paths(
+		get_option('prefix'), driver_install_path))
+
+# set other values pulled from the build options
+dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores'))
+dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes'))
+dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
+dpdk_conf.set('RTE_EAL_ALLOW_INV_SOCKET_ID', get_option('allow_invalid_socket_id'))
+
+install_headers('rte_config.h')
diff --git a/config/rte_config.h b/config/rte_config.h
new file mode 100644
index 000000000..813c3a67d
--- /dev/null
+++ b/config/rte_config.h
@@ -0,0 +1,50 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 Intel Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file Header file containing DPDK compilation parameters
+ *
+ * Header file containing DPDK compilation parameters. Also include the
+ * meson-generated header file containing the detected parameters that
+ * are variable across builds or build environments.
+ *
+ * NOTE: This file is only used for meson+ninja builds. For builds done
+ * using make/gmake, the rte_config.h file is autogenerated from the
+ * defconfig_* files in the config directory.
+ */
+#ifndef _RTE_CONFIG_H_
+#define _RTE_CONFIG_H_
+
+#include <rte_build_config.h>
+
+#endif /* _RTE_CONFIG_H_ */
diff --git a/config/x86/meson.build b/config/x86/meson.build
new file mode 100644
index 000000000..0d1a532ad
--- /dev/null
+++ b/config/x86/meson.build
@@ -0,0 +1,70 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2017 Intel Corporation.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# for checking defines we need to use the correct compiler flags
+march_opt = '-march=@0@'.format(machine)
+
+# we require SSE4.2 for DPDK
+sse_errormsg = '''SSE4.2 instruction set is required for DPDK.
+Please set the machine type to "nehalem" or "corei7" or higher value'''
+
+if cc.get_define('__SSE4_2__', args: march_opt) == ''
+	error(sse_errormsg)
+endif
+
+dpdk_conf.set('RTE_ARCH_X86', 1)
+if (host_machine.cpu_family() == 'x86_64')
+	dpdk_conf.set('RTE_ARCH_X86_64', 1)
+	dpdk_conf.set('RTE_ARCH', 'x86_64')
+	dpdk_conf.set('RTE_ARCH_64', 1)
+else
+	dpdk_conf.set('RTE_ARCH_I686', 1)
+	dpdk_conf.set('RTE_ARCH', 'i686')
+endif
+
+if cc.get_define('__AES__', args: march_opt) != ''
+	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AES', 1)
+	compile_time_cpuflags += ['RTE_CPUFLAG_AES']
+endif
+if cc.get_define('__PCLMUL__', args: march_opt) != ''
+	dpdk_conf.set('RTE_MACHINE_CPUFLAG_PCLMULQDQ', 1)
+	compile_time_cpuflags += ['RTE_CPUFLAG_PCLMULQDQ']
+endif
+if cc.get_define('__AVX__', args: march_opt) != ''
+	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AVX', 1)
+	compile_time_cpuflags += ['RTE_CPUFLAG_AVX']
+endif
+if cc.get_define('__AVX2__', args: march_opt) != ''
+	dpdk_conf.set('RTE_MACHINE_CPUFLAG_AVX2', 1)
+	compile_time_cpuflags += ['RTE_CPUFLAG_AVX2']
+endif
+
+dpdk_conf.set('RTE_CACHE_LINE_SIZE', 64)
diff --git a/meson.build b/meson.build
new file mode 100644
index 000000000..972ef9701
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,83 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2017 Intel Corporation.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+project('DPDK', 'C',
+	version: '17.08.0',
+	license: 'BSD',
+	default_options: ['buildtype=release'],
+	meson_version: '>= 0.41'
+)
+
+# set up some global vars for compiler, platform, configuration, etc.
+cc = meson.get_compiler('c')
+dpdk_conf = configuration_data()
+dpdk_libraries = []
+dpdk_drivers = []
+dpdk_extra_ldflags = []
+
+# for static libs, treat the drivers as regular libraries, otherwise
+# for shared libs, put them in a driver folder
+if get_option('default_library') == 'static'
+	driver_install_path = get_option('libdir')
+else
+	driver_install_path = join_paths(get_option('datadir'), 'dpdk/drivers')
+endif
+
+# configure the build, and make sure configs here and in config folder are
+# able to be included in any file. We also store a global array of include dirs
+# for passing to pmdinfogen scripts
+global_inc = include_directories('.', 'config')
+subdir('config')
+
+# TODO build libs and drivers
+
+# TODO build binaries and installable tools
+
+# write the build config
+build_cfg = 'rte_build_config.h'
+configure_file(output: build_cfg,
+		configuration: dpdk_conf,
+		install_dir: get_option('includedir'))
+
+# for static builds, include the drivers as libs, and also any
+# other dependent libs that DPDK needs to link against
+if get_option('default_library') == 'static'
+	dpdk_drivers = ['-Wl,--whole-archive'] + dpdk_drivers + ['-Wl,--no-whole-archive']
+	dpdk_libraries = dpdk_drivers + dpdk_libraries + dpdk_extra_ldflags
+endif
+
+pkg = import('pkgconfig')
+pkg.generate(name: meson.project_name(),
+	version: meson.project_version(),
+	libraries: dpdk_libraries,
+	description: 'The Data Plane Development Kit (DPDK)',
+	extra_cflags: '-include "rte_config.h"'
+)
diff --git a/meson_options.txt b/meson_options.txt
new file mode 100644
index 000000000..c03b79fbd
--- /dev/null
+++ b/meson_options.txt
@@ -0,0 +1,6 @@
+option('machine', type: 'string', value: 'native', description: 'set the target machine type')
+option('max_lcores', type: 'string', value: '128', description: 'maximum number of cores/threads supported by EAL')
+option('max_numa_nodes', type: 'string', value: '4', description: 'maximum number of NUMA nodes supported by EAL')
+option('use_hpet', type: 'boolean', value: false, description: 'use HPET timer in EAL')
+option('allow_invalid_socket_id', type: 'boolean', value: false,
+	description: 'allow out-of-range NUMA socket id\'s for platforms that don\'t report the value correctly')
-- 
2.13.5