add support for QNX 7.1/8.0

[pkleymonov-qnx]

This PR provides changes for QNX 7.1/8.0 running on aarch64le/x86_64
issue: #314

NOTE: QNX cross-compilation are only supported from a Linux(x86_64) build machine.
For QNX, we have to explicitly build all dependencies
IMPORTANT: we cannot use option "--build=missing" for QNX build,
since conan will try to use recepies from conan default server:
- https://conan.io/center
which has no QNX ports for gtest/spdlog/fmt libs.

Pre-requisite:

• Install QNX license and SDP installation (~/.qnx and ~/qnx800 by default)

  • https://www.qnx.com/products/everywhere/ (Non-Commercial Use)

• Before building up-cpp we need to build all dependencies from up-conan-recipes

Build all dependencies from up-conan-recipes

Checkout up-conan-recipes

# clone up-conan-recipes
git clone https://github.com/qnx-ports/up-conan-recipes.git

or you can use fix from PR:
eclipse-uprotocol/up-conan-recipes#36

Build dependencies

cd up-conan-recipes

# source QNX SDP
source <QNX_SDP>/qnxsdp-env.sh

# build protobuf for Linux build machine
conan create --version=3.21.12 --build=missing protobuf

# IMPORTANT
# update conan settings for QNX8.0 support
conan config install tools/qnx-8.0-extension/settings_user.yml

# build protobuf for QNX host
#
# <profile-name> could be one of: nto-7.1-aarch64-le, nto-7.1-x86_64, nto-8.0-aarch64-le, nto-8.0-x86_64
#
conan create -pr:h=tools/profiles/<profile-name> --version=3.21.12 protobuf

# build up-core-api
conan create -pr:h=tools/profiles/<profile-name> --version 1.6.0-alpha2 up-core-api/release/

# build all dependencies for up-cpp
conan create -pr:h=tools/profiles/<profile-name> --version=10.2.1 fmt/all
conan create -pr:h=tools/profiles/<profile-name> --version=1.13.0 spdlog/all
conan create -pr:h=tools/profiles/<profile-name> --version=1.13.0 gtest

Build up-cpp lib and tests

cd ..

#clone up-cpp from this PR

cd up-cpp

# setup cmake generator and preset for up-cpp
conan install -pr:h=../up-conan-recipes/tools/profiles/<profile-name> --version 1.0.1 .

# setup cmake configuration
cmake --preset conan-release

# build up-cpp libary and tests
cmake --build build/Release -- -j

# all tests you can find under build/Release/bin/
# copy test binaries to your QNX target

closes #314

[github-actions]

Code coverage report is ready! 📈

• Code Coverage Percentage: 92.60%
• Code Coverage Report: View Coverage Report

[PLeVasseur]

Thanks @pkleymonov-qnx for the contribution!

Could you open an issue for adding tests for building for QNX in CI as well?

[github-actions]

Code coverage report is ready! 📈

• Code Coverage Percentage: 92.60%
• Code Coverage Report: View Coverage Report