dep: add grpc as build dependency

detect re2, protoc, grpc_cpp_plugin, protobuf library
and add grpc build dependencies

Individual lib or app can use GRPC as follows

for library use: lib_deps += DAO_EXT_DEPS_GRPC
for application use: app_deps += DAO_EXT_DEPS_GRPC

Signed-off-by: Nitin Saxena <nsaxena@marvell.com>
Change-Id: I5cabd877461000d8a8ed1dcce8a39a27bf3bd8f0
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/dataplane/dpu-offload/+/141618
Reviewed-by: Ashwin Sekhar T K <asekhar@marvell.com>
Tested-by: sa_ip-toolkits-Jenkins <sa_ip-toolkits-jenkins@marvell.com>

ci/build/config/arm64_cn10k_linux_gcc

@@ -1,6 +1,6 @@
 [binaries]
 c = ['ccache', 'aarch64-marvell-linux-gnu-gcc']
-cpp = ['ccache', 'aarch64-marvell-linux-gnu-cpp']
+cpp = ['ccache', 'aarch64-marvell-linux-gnu-g++']
 ar = 'aarch64-marvell-linux-gnu-gcc-ar'
 strip = 'aarch64-marvell-linux-gnu-strip'
 pkgconfig = 'pkg-config'

config/arm64_cn10k_linux_gcc

@@ -1,6 +1,6 @@
 [binaries]
 c = ['ccache', 'aarch64-marvell-linux-gnu-gcc']
-cpp = ['ccache', 'aarch64-marvell-linux-gnu-cpp']
+cpp = ['ccache', 'aarch64-marvell-linux-gnu-g++']
 ar = 'aarch64-marvell-linux-gnu-gcc-ar'
 strip = 'aarch64-marvell-linux-gnu-strip'
 pkgconfig = 'pkg-config'

dep/grpc/meson.build

@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: Marvell-MIT
+# Copyright (c) 2025 Marvell.
+
+protoc = find_program('protoc', required:false)
+grpc_cpp_plugin = find_program('grpc_cpp_plugin', required:false)
+re2_dep = dependency('re2', method : 'pkg-config', version: '>=11.0.0', required:false)
+grpcplus_dep = dependency('grpc++', method : 'pkg-config', version: '>=1.65.0', required:false)
+protobuf_dep = dependency('protobuf', method : 'pkg-config', version:'>=27.2.0', required:false)
+
+if not protoc.found()
+	message('protobuf compiler (protoc) not found')
+	subdir_done()
+endif
+
+if not grpc_cpp_plugin.found()
+	message('grpc_cpp_plugin not found')
+	subdir_done()
+endif
+
+if not re2_dep.found()
+	message('re2 not found')
+	subdir_done()
+endif
+
+if not protobuf_dep.found()
+	message('protobuf pkgconfig not exported')
+	subdir_done()
+endif
+
+if not grpcplus_dep.found()
+	message('grpcplus pkgconfig not exported')
+	subdir_done()
+endif
+
+DAO_BUILD_CONF.set('DAO_GRPC_DEP', '1')
+DAO_EXT_DEPS_GRPC += grpcplus_dep
+DAO_EXT_DEPS_GRPC += protobuf_dep

dep/meson.build

@@ -3,3 +3,4 @@
 
 subdir('dpdk')
 subdir('libnl')
+subdir('grpc')

meson.build

@@ -3,11 +3,11 @@
 
 project(
 	'Data Accelerator Offload',
-	'C',
+	'C', 'CPP',
 	meson_version: '>= 0.61.0',
 	version: run_command(find_program('cat', 'more'),
 							files('VERSION'), check: true).stdout().strip(),
-	default_options: ['warning_level=2', 'werror=true', 'buildtype=release']
+	default_options: ['warning_level=2', 'werror=true', 'buildtype=release','cpp_std=c++17']
 )
 
 # Build Configuration Data
@@ -21,6 +21,8 @@ DAO_INCLUDES = []
 DAO_EXT_DEPS_LIBDPDK = []
 # LIBNL
 DAO_EXT_DEPS_LIBNL = []
+# GRPC
+DAO_EXT_DEPS_GRPC = []
 # DAO static libraries
 DAO_STATIC_LIBS = []
 # Enabled/disabled static dao applicaitons/libraries/tests