Merge branch 'exclude-morello-embedded-from-llvm-build' into 'master'

Exclude embedded-morello when building with GNAT-LLVM

See merge request eng/toolchain/bb-runtimes!51

aarch64/__init__.py

@@ -1,4 +1,5 @@
 # BSP support for ARM64
+from support import Compiler, target_compiler
 from support.bsp_sources.archsupport import ArchSupport
 from support.bsp_sources.target import DFBBTarget
 
@@ -100,12 +101,18 @@ def compiler_switches(self):
 
     @property
     def system_ads(self):
-        return {
+        result = {
             'light': 'system-xi-arm.ads',
             'light-tasking': 'system-xi-arm-gic-sfp.ads',
-            'embedded': 'system-xi-arm-gic-full.ads'
         }
 
+        # GNAT-LLVM can't build the embedded Morello runtime yet, so we exclude it for
+        # the time being.
+        if target_compiler() != Compiler.gnat_llvm:
+            result['embedded'] = 'system-xi-arm-gic-full.ads'
+
+        return result
+
 
 class ZynqMP(Aarch64Target):
     @property