* Recommend boost >= 1.65.1 and gcc >= 7.4.0
* Require clang >= 4.0, or Xcode >= 9.0 on macOS
* Silence an ABI-related diagnostic message from gcc on armv7
* Update waf to version 2.0.21
* Make graphviz optional for building documentation
* Sync sphinx configuration
Change-Id: Ib271da841cd12e7595ae83d75bd0fc681f8c231f
Also in this commit:
* Sync CI scripts with other projects
* Modernize docs/conf.py
* Replace redmine_issue extension with sphinx.ext.extlinks
* Minor updates to docs/doxygen.conf.in
* Cleanup README.md and INSTALL.rst
Refs: #5095
Change-Id: I614e876e6aed73659f4f4cea01813f4604599263
This commit aims only at correcting building system and adding unit-test framework.
Existing test cases (ChronoSync) are disabled temporarily and will be fixed later.
Minimum changes are made, so that the code can be built successfully.
Compiling warnings will be resolved in a later commit.
Refs: #1495
Change-Id: Ibf7119bbd77b6307cb58bbee47b61d7a7312df98