RemoteServer and PluginManager side would need complete redesign to be
data race free and concurrent. But as that would be unlikely to be
required from DFHack I decided simpler solution that is fixing data
ownership to a thread and all ServerConnection share a single lock which
allows access to PluginManager and Core.
The initial run_dfhack_init loads shared state information that is used
by EventManager when state changes. There is a small risk that
EventManager can handle events while run_dfhack_init is still running.
This partially reverts f02466de8a, but behavior
should be the same under MSVC, which that commit attempted to fix. From
https://cmake.org/cmake/help/v3.14/command/add_custom_command.html:
> The `BYPRODUCTS` option is ignored on non-Ninja generators except to mark
> byproducts `GENERATED`.
Since `$GENERATED_HDRS` are already marked generated, this change should have
no effect on non-Ninja generators.
Also modified Core/Console a bit to get this to actually produce output on
Travis (DFHACK_DISABLE_CONSOLE now allows console output, just not input)
Squashed merge from lethosor/tests
The change allows correct and optimized incremental builds with VC and
ninja but unix makefile backend will rebuild everything if anything
changes in structures.
ninja has a single build file which avoided issues if multiple targets
depend on same files. But Unix Makefiles generator user recursive make
which requires each ADD_CUSTOM_COMMAND to have only one target depending
on them.
Then makefile generator also has stupid rule that it touches all
secundary output files if primary file has been updated.
It was surprising hard to find a version that actually works correctly
for both issues. Solution is using BYPRODUCTS and refactoring command
and target dependencies.
As a bonus this change now allows build to work from source tarball if
the tarball includes git-describe.h.
Using add_custom_command allows cmake to track dependency from command
to git-describe.h that is implicit dependency of DFHackVersion.cpp.
The change also fixes issues if there is multiple build directories and
git-describe.h missing but git-dsecribe.h.tmp is present.