Pass linker option to compress debug sections. Only enable this for
Travis, as spending additional cycles on it in development would not be
desirable.
This uses GCC's pass-through to linker instead of what should really be
`-gz` because of Ubuntu's outdated versions.
This (partially) addresses
https://github.com/OpenRCT2/OpenRCT2/issues/6232.
This moves setting of compilation flags to common file to be used by all
subprojects and explicitly enables only C++ support, skipping whole C
support in CMake.
While looking at
https://github.com/OpenRCT2/OpenRCT2/issues/7176#issuecomment-365399194
I got a crash with stacktrace:
#0 0x7f9e81fa2e30 in object_entry_get_entry(int, unsigned long) ../src/openrct2/object/ObjectList.cpp:181
#1 0x7f9e81fa24ae in get_loaded_object_entry(unsigned long) ../src/openrct2/object/ObjectList.cpp:142
#2 0x7f9e8215d64f in S6Exporter::Export() ../src/openrct2/rct2/S6Exporter.cpp:169
#3 0x7f9e8216de71 in scenario_save(char const*, int) ../src/openrct2/rct2/S6Exporter.cpp:757
#4 0x7f9e81c932b0 in game_autosave() ../src/openrct2/Game.cpp:1590
#5 0x7f9e828625b6 in scenario_autosave_check() ../src/openrct2/scenario/Scenario.cpp:297
#6 0x7f9e81c8a958 in game_update() ../src/openrct2/Game.cpp:439
#7 0x7f9e81c6731f in OpenRCT2::Context::Update() (/home/janisozaur/workspace/OpenRCT2/build/libopenrct2.so+0x10f331f)
#8 0x7f9e81c6674c in OpenRCT2::Context::RunVariableFrame() (/home/janisozaur/workspace/OpenRCT2/build/libopenrct2.so+0x10f274c)
#9 0x7f9e81c6402d in OpenRCT2::Context::RunFrame() (/home/janisozaur/workspace/OpenRCT2/build/libopenrct2.so+0x10f002d)
#10 0x7f9e81c638f4 in OpenRCT2::Context::RunGameLoop() (/home/janisozaur/workspace/OpenRCT2/build/libopenrct2.so+0x10ef8f4)
#11 0x7f9e81c627bf in OpenRCT2::Context::Launch() (/home/janisozaur/workspace/OpenRCT2/build/libopenrct2.so+0x10ee7bf)
#12 0x7f9e81c5b08a in OpenRCT2::Context::RunOpenRCT2(int, char const**) ../src/openrct2/Context.cpp:170
#13 0x56323695b95e in main ../src/openrct2-ui/Ui.cpp:60
Sadly I cannot reproduce it anymore
