[Tarantool-patches] [PATCH v2 0/2] build: link curl with c-ares

[Serge Petrenko]

The first commit adds c-ares as a submodule and starts using it when building
libcurl. This allows to eliminate some problems the curl's default threaded
resolver has when DNS server doesn't respond for a long time.

The second commit adds curl and c-ares version output to `tarantool --version`
and also to `require "tarantool"` table in Lua. This may be useful for debugging
purposes.

Since the first commit is intended as a bugfix, it should be pushed to all
branches, starting from 1.10.
However, the second one looks more like a feature so I suggest it be pushed only
to master.

Changes in v2:
  - use CMake when building ares instead of configure
  - minor fixes as per review from @Totktonada

https://github.com/tarantool/tarantool/tree/sp/gh-4591-link-curl-with-c-ares-full-ci
https://github.com/tarantool/tarantool/issues/4591

Serge Petrenko (2):
  build: link bundled libcurl with c-ares
  build: add bundled curl and c-ares to version output

 .gitmodules               |  3 ++
 CMakeLists.txt            |  6 ++++
 cmake/BuildAres.cmake     | 71 +++++++++++++++++++++++++++++++++++++++
 cmake/BuildLibCURL.cmake  | 41 ++++++++++++++++++++--
 src/CMakeLists.txt        |  3 +-
 src/lua/init.c            | 14 ++++++++
 src/main.cc               |  6 ++++
 src/trivia/config.h.cmake |  4 +++
 test/box-py/args.result   |  8 +++++
 test/box-py/args.test.py  |  5 ++-
 third_party/c-ares        |  1 +
 11 files changed, 158 insertions(+), 4 deletions(-)
 create mode 100644 cmake/BuildAres.cmake
 create mode 160000 third_party/c-ares

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2.21.0 (Apple Git-122)