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>

Jenkinsfile

@@ -137,8 +137,8 @@ pipeline {
                             sh '''
                             cp ../../ZELOOTD.z64 OTRExporter/baserom_non_mq.z64
                             cd soh
-                            make setup -j4 DEBUG=0 OPTFLAGS=-O2 CC=gcc-12 CXX=g++-12
-                            make -j4 DEBUG=0 OPTFLAGS=-O2 CC=gcc-12 CXX=g++-12
+                            export CC="clang -arch arm64 -arch x86_64"; export CXX="clang++ -arch arm64 -arch x86_64"; make setup -j4 OPTFLAGS=-O2 DEBUG=0 LD="ld"
+                            export CC="clang -arch arm64 -arch x86_64"; export CXX="clang++ -arch arm64 -arch x86_64"; make -j4 DEBUG=0 OPTFLAGS=-O2 LD="ld"
                             make -j4 appbundle
                             mv ../README.md readme.txt
                             7z a soh-mac.7z soh.app readme.txt