Add a top-level --with-system-libs arg to build.sh (#42120)

Author: omajid

src/SourceBuild/content/build.sh

@@ -14,6 +14,7 @@ usage()
   echo "  --configuration <value>         Build configuration: 'Debug' or 'Release' (short: -c)"
   echo "  --rid, --target-rid <value>     Overrides the rid that is produced by the build. e.g. alpine.3.18-arm64, fedora.37-x64, freebsd.13-arm64, ubuntu.19.10-x64"
   echo "  --verbosity <value>             Msbuild verbosity: q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic] (short: -v)"
+  echo "  --with-system-libs <libs>       Use system versions of these libraries. Combine with a plus. eg brotli+libunwind+rapidjson+zlib"
   echo ""
 
   echo "Actions:"
@@ -89,6 +90,7 @@ exclude_ci_binary_log=false
 prepare_machine=false
 use_dev_versioning=false
 target_rid=
+system_libs=
 
 properties=()
 while [[ $# > 0 ]]; do
@@ -106,6 +108,10 @@ while [[ $# > 0 ]]; do
       target_rid=$2
       shift
       ;;
+    -with-system-libs)
+      system_libs=$2
+      shift
+      ;;
     -verbosity|-v)
       verbosity=$2
       shift
@@ -291,6 +297,9 @@ initDistroRidGlobal "$os" "$arch" ""
 if [[ -n "$target_rid" ]]; then
   properties+=( "/p:TargetRid=$target_rid" )
 fi
+if [[ -n "$system_libs" ]]; then
+  properties+=( "/p:UseSystemLibs=$system_libs" )
+fi
 
 # Source-only settings
 if [[ "$sourceOnly" == "true" ]]; then