try fixing macos gcc builds 10

_build.sh

@@ -736,11 +736,7 @@ build_single_target() {
         fi
       fi
     elif [ "${_OS}" = 'mac' ]; then
-      if [ "${_CC}" = 'gcc' ] && [ "${_machine}" = 'aarch64' ]; then
-        _TRIPLET="arm64-apple-darwin"
-      else
-        _TRIPLET="${_machine}-apple-darwin"
-      fi
+      _TRIPLET="${_machine}-apple-darwin"
 
       _RUN_BIN='echo'
       if [ "${_HOST}" = 'mac' ]; then
@@ -1252,8 +1248,10 @@ build_single_target() {
     fi
   fi
 
-  _CMAKE_GLOBAL+=" -DCMAKE_C_COMPILER_TARGET=${_TRIPLET}"
-  _CMAKE_CXX_GLOBAL+=" -DCMAKE_CXX_COMPILER_TARGET=${_TRIPLET}"
+  if [ "${_OS}" != 'mac' ] || [ "${_CC}" != 'gcc' ]; then  # skip for mac-gcc
+    _CMAKE_GLOBAL+=" -DCMAKE_C_COMPILER_TARGET=${_TRIPLET}"
+    _CMAKE_CXX_GLOBAL+=" -DCMAKE_CXX_COMPILER_TARGET=${_TRIPLET}"
+  fi
 
   # Needed to exclude compiler info from objects, but for our Windows COFF
   # outputs this seems to be a no-op as of llvm/clang 13.x/14.x.