dependencies management

[phirg]

example for appveyor:

• ps: Start-FileDownload https://mapbox.s3.amazonaws.com/windows-builds/windows-build-deps/cmake-3.1.0-win32-x86.7z -FileName cm.7z
• ps: Start-FileDownload https://mapbox.s3.amazonaws.com/windows-builds/windows-build-deps/libosmium-deps-win-14.0-x64.7z -FileName lodeps.7z
• 7z x cm.7z | %windir%\system32\find "ing archive"
• 7z x lodeps.7z | %windir%\system32\find "ing archive"

Amazon S3 for free up to 5Gb?

[phirg]

another possibility is to use git submodules for dependencies like poco or opencv that are on github... and then if they are cmake-able, use cmake to build the requested components. The disavantage then, is that it requires some long time, and we can reach a timeout on the build servers.

• With travis, we should use the packages when available (always?).
• With Appveyor, we should pack dev sets with headers, lib and dll (and then, see previous comment). We should take care of what compiler is used, and provide a simple (reproducible) script to build the dev pack.

Note: get the last git release with something like latestTag=$(git describe --abbrev=0 --tags) git checkout $latestTag