add support for clang compiler (#592)

* hacks to align strings for clang... wow just wow

* start work to getting built with clang

* fix issues with struct constructors, all builds, doesn't link still

* fix some narrowing issues that clang complains about

* fix compliation of zapd

* fix null deref in VersionInfo

* builds with clang

* make stringbuilding use StringHelper instead of addition

* fix linking

* add CLANG SHIP overlay on clang built versions

* doesn't need to be volatile

* mark unknown strings as extern

* rename some stuff

* can't align extern

* hopefully fix compilation for everythign

* expandtab

* allow setting LD

* Revert "allow setting LD"

This reverts commit 711aba6db2.

maybe to use lld it should be a LDFLAG?

* -Wno-deprecated-declarations is required for newer versions of clang

on macOS 13 beta sdk, the version of apple clang requires this

* Add jenkins support for clang

* Forward CXX flags to stormlib compilation

* Move GCC only flags to check

* use exports to set multiarch setup

* Fix Jenkins forever

* use make instead of cmake --build

add some flags to build with clang-11 as well

* address review coments

- rework extraction to allow multi thread
- misc readability cleanup

* update makefile to add WARN on linux+clang

Co-authored-by: David Chavez <david@dcvz.io>

soh/src/code/game.c

@@ -1,3 +1,4 @@
+#include <string.h>
 #include "global.h"
 #include "vt.h"
 
@@ -9,6 +10,9 @@ ViMode sViMode;
 FaultClient sGameFaultClient;
 u16 sLastButtonPressed;
 
+// Forward declared, because this in a C++ header.
+int gfx_create_framebuffer(uint32_t width, uint32_t height);
+
 void GameState_FaultPrint(void) {
     static char sBtnChars[] = "ABZSuldr*+LRudlr";
     s32 i;