Add support for building Prox with Meson

DPDK has deprecated the use of the make system in versions 20.11 and
beyond. Following the deprecation it is non-trivial to keep using make
to build projects that depend on DPDK. A cleaner solution is to adopt
Meson as a building framework. This commit adds support for Meson in
Prox. The meson.build file mirrors the functionality that is available
in the current Makefile. The make build system will exit if it detects
that DPDK was built using meson (testing for the RTE_TARGET directory)

Signed-off-by: Heinrich Kuhn <heinrich.kuhn@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Change-Id: I6ebffa2199993fd6eb46c2f31961fe7dc38e727c

1 files changed, 190 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/meson.build b/VNFs/DPPD-PROX/meson.build
new file mode 100644
index 00000000..41cf6553
--- /dev/null
+++ b/VNFs/DPPD-PROX/meson.build
@@ -0,0 +1,190 @@
+##
+## Copyright (c) 2021 Heinrich Kuhn <heinrich.kuhn@corigine.com>
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+##	   http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+##
+
+project('dppd-prox', 'C',
+	version:
+	run_command(['git', 'describe',
+		     '--abbrev=8', '--dirty', '--always']).stdout().strip(),
+	license: 'Apache',
+	default_options: ['buildtype=release', 'c_std=gnu99'],
+	meson_version: '>= 0.47'
+)
+
+cc = meson.get_compiler('c')
+
+# Configure options for prox
+if get_option('bng_qinq').enabled()
+	add_project_arguments('-DUSE_QINQ', language: 'c')
+endif
+
+if get_option('mpls_routing').enabled()
+	add_project_arguments('-DMPLS_ROUTING',  language: 'c')
+endif
+
+if get_option('prox_stats').enabled()
+	add_project_arguments('-DPROX_STATS',  language: 'c')
+endif
+
+if get_option('hw_direct_stats').enabled()
+	add_project_arguments('-DPROX_HW_DIRECT_STATS',  language: 'c')
+endif
+
+if get_option('dbg')
+	add_project_arguments('-ggdb',	language: 'c')
+endif
+
+if get_option('log')
+	add_project_arguments('-DPROX_MAX_LOG_LVL=2',  language: 'c')
+endif
+
+if get_option('gen_decap_ipv6_to_ipv4_cksum').enabled()
+	add_project_arguments('-DGEN_DECAP_IPV6_TO_IPV4_CKSUM',  language: 'c')
+endif
+
+if get_option('crc') == 'soft'
+	add_project_arguments('-DSOFT_CRC',  language: 'c')
+endif
+
+cflags = [
+	'-DPROGRAM_NAME="prox"',
+	'-fno-stack-protector',
+	'-DPROX_PREFETCH_OFFSET=2',
+	'-DLATENCY_PER_PACKET',
+	'-DLATENCY_HISTOGRAM',
+	'-DGRE_TP',
+	'-D_GNU_SOURCE']	# for PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+
+# Add configured cflags to arguments
+foreach arg: cflags
+	add_project_arguments(arg, language: 'c')
+endforeach
+
+# enable warning flags if they are supported by the compiler
+warning_flags = [
+	'-Wno-unused',
+	'-Wno-unused-parameter',
+	'-Wno-unused-result',
+	'-Wno-deprecated-declarations']
+
+foreach arg: warning_flags
+	if cc.has_argument(arg)
+		add_project_arguments(arg, language: 'c')
+	endif
+endforeach
+
+# Attempt to find a suitable lua and add to deps
+lua_versions = ['lua', 'lua5.2', 'lua5.3']
+foreach i:lua_versions
+	lua_dep = dependency(i, required: false)
+	if not lua_dep.found()
+	lua_dep = cc.find_library(i, required: false)
+	endif
+	if lua_dep.found()
+	break
+	endif
+endforeach
+if not lua_dep.found()
+	error('Suitable lua version not found')
+endif
+
+# All other dependencies
+dpdk_dep = dependency('libdpdk', required: true)
+tinfo_dep = dependency('tinfo', required: false)
+threads_dep = dependency('threads', required: true)
+pcap_dep = dependency('pcap', required: true)
+ncurses_dep = dependency('ncurses', required: true)
+ncursesw_dep = dependency('ncursesw', required: true)
+libedit_dep = dependency('libedit', required: true)
+math_dep = cc.find_library('m', required : false)
+
+deps = [dpdk_dep,
+	tinfo_dep,
+	threads_dep,
+	pcap_dep,
+	ncurses_dep,
+	ncursesw_dep,
+	libedit_dep,
+	math_dep,
+	lua_dep]
+
+# Grab the DPDK version here "manually" as it is not available in the dpdk_dep
+# object
+dpdk_version = run_command('pkg-config', '--modversion', 'libdpdk').stdout()
+
+# Explicitly add these to the dependency list
+deps += [cc.find_library('rte_bus_vdev', required: true)]
+
+if dpdk_version.version_compare('<20.11.0')
+deps += [cc.find_library('rte_pmd_ring', required: true)]
+else
+deps += [cc.find_library('rte_net_ring', required: true)]
+endif
+
+sources = files(
+	'task_init.c', 'handle_aggregator.c', 'handle_nop.c', 'handle_irq.c',
+	'handle_arp.c', 'handle_impair.c', 'handle_lat.c', 'handle_qos.c',
+	'handle_qinq_decap4.c', 'handle_routing.c', 'handle_untag.c',
+	'handle_mplstag.c', 'handle_qinq_decap6.c', 'rw_reg.c',
+	'handle_lb_qinq.c', 'handle_lb_pos.c', 'handle_lb_net.c',
+	'handle_qinq_encap4.c', 'handle_qinq_encap6.c', 'handle_classify.c',
+	'handle_l2fwd.c', 'handle_swap.c', 'handle_police.c', 'handle_acl.c',
+	'handle_gen.c', 'handle_master.c', 'packet_utils.c', 'handle_mirror.c',
+	'handle_genl4.c', 'handle_ipv6_tunnel.c', 'handle_read.c',
+	'handle_cgnat.c', 'handle_nat.c', 'handle_dump.c', 'handle_tsc.c',
+	'handle_fm.c', 'handle_lb_5tuple.c', 'handle_blockudp.c', 'toeplitz.c',
+	'thread_nop.c', 'thread_generic.c', 'prox_args.c', 'prox_cfg.c',
+	'prox_cksum.c', 'prox_port_cfg.c', 'cfgfile.c', 'clock.c',
+	'commands.c', 'cqm.c', 'msr.c', 'defaults.c', 'display.c',
+	'display_latency.c', 'display_latency_distr.c', 'display_mempools.c',
+	'display_ports.c', 'display_rings.c', 'display_priority.c',
+	'display_pkt_len.c', 'display_l4gen.c', 'display_tasks.c',
+	'display_irq.c', 'log.c', 'hash_utils.c', 'main.c', 'parse_utils.c',
+	'file_utils.c', 'run.c', 'input_conn.c', 'input_curses.c', 'rx_pkt.c',
+	'lconf.c', 'tx_pkt.c', 'expire_cpe.c', 'ip_subnet.c', 'stats_port.c',
+	'stats_mempool.c', 'stats_ring.c', 'stats_l4gen.c', 'stats_latency.c',
+	'stats_global.c', 'stats_core.c', 'stats_task.c', 'stats_prio.c',
+	'stats_irq.c', 'cmd_parser.c', 'input.c', 'prox_shared.c',
+	'prox_lua_types.c', 'genl4_bundle.c', 'heap.c', 'genl4_stream_tcp.c',
+	'genl4_stream_udp.c', 'cdf.c', 'stats.c', 'stats_cons_log.c',
+	'stats_cons_cli.c', 'stats_parser.c', 'hash_set.c', 'prox_lua.c',
+	'prox_malloc.c', 'prox_ipv6.c', 'prox_compat.c', 'handle_nsh.c')
+
+# Include a couple of source files depending on DPDK support
+if cc.find_library('rte_pmd_aesni', required: false).found()
+	sources += files('handle_esp.c')
+else
+	warning('Building w/o IPSEC support')
+endif
+
+if cc.find_library('rte_pipeline', required: false).found()
+	sources += files('handle_pf_acl.c', 'thread_pipeline.c')
+endif
+
+# Generate the git_version.c file and add to sources
+git_version = configuration_data()
+git_version.set('GIT_VERSION', '@0@'.format(meson.project_version()))
+git_version_c = configure_file(input: 'git_version.c.in',
+	output: 'git_version.c',
+	configuration: git_version)
+
+git_version_file = join_paths(meson.current_build_dir(), 'git_version.c')
+sources += files(git_version_file)
+
+executable('prox',
+	sources,
+	c_args: cflags,
+	dependencies: deps,
+	install: true)