[Local GC] Implement loader protocol for a standalone GC (#14663)

* First cut of the load protocol

* Implement for non-standalone GC

* Initial working implementation

* First steps towards not using GetProcAddress when not using a standalone GC

* Factor out loading routines into standalone and non-standalone cases

* Remove the FEATURE_STANDALONE_GC_ONLY build

* Code cleanup and comments

* Comments for the version numbers

* Use more appropriate type for config string

* add GC_LOAD_STATUS_BEFORE_START to disambiguate failures before the start of the load and failures at the beginning of the load

* FEATURE_STANDALONE_GC on by default

* Implement YieldProcessor and MemoryBarrier for arm and arm64

* Remove missed FEATURE_STANDALONE_GC feature check

1 files changed, 0 insertions, 4 deletions

diff --git a/build.sh b/build.sh
index a098d5e9ad..865f0feebf 100755
--- a/build.sh
+++ b/build.sh
@@ -50,7 +50,6 @@ usage()
     echo "-ignorewarnings - do not treat warnings as errors"
     echo "-cmakeargs - user-settable additional arguments passed to CMake."
     echo "-bindir - output directory (defaults to $__ProjectRoot/bin)"
-    echo "-buildstandalonegc - builds the GC in a standalone mode. Can't be used with \"cmakeargs\"."
     echo "-msbuildonunsupportedplatform - build managed binaries even if distro is not officially supported."
     echo "-numproc - set the number of build processes."
     exit 1
@@ -859,9 +858,6 @@ while :; do
                 exit 1
             fi
             ;;
-        buildstandalonegc|-buildstandalonegc)
-            __cmakeargs="$__cmakeargs -DFEATURE_STANDALONE_GC=1 -DFEATURE_STANDALONE_GC_ONLY=1"
-            ;;
         msbuildonunsupportedplatform|-msbuildonunsupportedplatform)
             __msbuildonunsupportedplatform=1
             ;;