Mirko Bonadei 54875d05f1 Add missing RTC_EXPORT for the Chromium Windows build.
After fixing the issue with crbug.com/1018579, lld-link complained
that some symbols need to be exported, see [1].

[1] - https://ci.chromium.org/p/chromium/builders/try/win_chromium_compile_dbg_ng/432025

Bug: webrtc:9419
Change-Id: I9107a9c76361f4c66463a9af2e81a3991ae14df5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/159007
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29721}
2019-11-07 09:32:24 +00:00
..
2019-10-31 15:43:59 +00:00
2019-06-03 08:15:09 +00:00
2019-11-05 09:40:03 +00:00
2019-02-01 13:24:47 +00:00

How to write code in the api/ directory

Mostly, just follow the regular style guide, but:

  • Note that api/ code is not exempt from the “.h and .cc files come in pairs” rule, so if you declare something in api/path/to/foo.h, it should be defined in api/path/to/foo.cc.
  • Headers in api/ should, if possible, not #include headers outside api/. Its not always possible to avoid this, but be aware that it adds to a small mountain of technical debt that were trying to shrink.
  • .cc files in api/, on the other hand, are free to #include headers outside api/.

That is, the preferred way for api/ code to access non-api/ code is to call it from a .cc file, so that users of our API headers wont transitively #include non-public headers.

For headers in api/ that need to refer to non-public types, forward declarations are often a lesser evil than including non-public header files. The usual rules still apply, though.

.cc files in api/ should preferably be kept reasonably small. If a substantial implementation is needed, consider putting it with our non-public code, and just call it from the api/ .cc file.