* Keep BUILD_TESTING, but only run tests compatible with API (for
packaging)
* Add BUILD_TESTING_INTERNAL for all tests including internal function
tests that modify API to be run on our CI
Building client channels out of tree does not work reliable as the
dependencies can not be easily split. (exceptions may be simple ones
as echo channel)
It does complicate the build system and code though, so remove this
for maintainability reasons.
- fixed invalid, missing or additional arguments
- removed all type casts from arguments
- added missing (void*) typecasts for %p arguments
- use inttypes defines where appropriate
As building with -Wl,--no-undefined might cause issues when
combined with other linker flags (e.g. with -fsanitize=address see #3289)
it is now disabled per default but can be re-enabled with
-DWITH_NO_UNDEFINED=ON.
It is enabled for ci builds on linux to find undefined symbols.
