Stephan Guilloux 2b2fb9c708
Problem: Android NDK 22 download broken since support of NDK 23. (#4444)
* Problem: Android NDK 22 download broken since support of NDK 23.

Due to the PR to support NDK 23.

With NDK 23, the archive file name has changed.
This change is handled by the PR to support NDK23, but now, only 23 and after
are supported.

Also, NDK 23 support introduced a 2nd occurence of the variable
HOST_PLATFORM, with another value. One occurence being exported,
this may confuse next developpers (and it actually confused me).

Solution: Code review

1st occurence is simply dropped, and the algorithm around is changed so that
there is no need of a 'host_platform' kind of stuff.

2nd occurrence is renamed to ANDROID_BUILD_PLATFORM.

Note that 'HOST' is replaced by 'BUILD', as this is the common naming
when talking about the build/compilation machine, when cross compiling.

A dedicated function is created in the helpers, to actually download
the NDK. As this function is made 'public', more checks are performed.

Note:

    To be reported in CZMQ & ZYRE, via ZPROJECT, where NDK is downloaded
    in 2 different files.
2022-10-21 17:36:38 +01:00
..
2022-02-11 00:45:06 +02:00
2021-04-28 11:41:36 +03:00
2016-12-22 14:25:00 +08:00
2022-02-11 00:45:06 +02:00
2019-05-07 10:37:47 -04:00
2022-02-11 00:45:06 +02:00

This directory holds build tools, i.e. tools we use to build the current
code tree. Packaging tools (which take released tarballs or github code
repos) should go into /packaging.

Note: 'deprecated-msvc' contains deprecated prepared Visual Studio Solution 
files for various Visual Studio versions. These are no longer maintained, 
and may or may not work. Please use cmake instead to build with Visual
Studio. Rationale: The solution and project files are hard to maintain,
since there are different variants for each Visual Studio version.
The tests have never been included there for this reason, so they were
never usable for actual development of libzmq. If you encounter that 
something that worked before does not work with CMake, please open as 
issue at https://github.com/zeromq/libzmq/issues.