Pass toolchain archive to make in pipeline template (#6640)

.pipelines/templates/PackageBuild.yml

@@ -150,6 +150,7 @@ steps:
             echo "ERROR: toolchain archive not found!" >&2
             exit 1
           fi
+          echo "##vso[task.setvariable variable=toolchainArchive]$toolchain_archive"
 
           sudo make -C "${{ parameters.buildRepoRoot }}/toolkit" toolchain TOOLCHAIN_ARCHIVE="$toolchain_archive"
         displayName: "Populate toolchain"
@@ -196,6 +197,10 @@ steps:
         use_ccache_arg="USE_CCACHE=n"
       fi
 
+      if [[ -n "${{ parameters.customToolchainArtifactName }}" ]]; then
+        toolchain_archive_arg="TOOLCHAIN_ARCHIVE=$(toolchainArchive)"
+      fi
+
       sudo make -C "${{ parameters.buildRepoRoot }}/toolkit" build-packages -j$(nproc) \
         CONCURRENT_PACKAGE_BUILDS=${{ parameters.concurrentPackageBuilds }} \
         CONFIG_FILE="" \
@@ -209,6 +214,7 @@ steps:
         $delta_fetch_arg \
         $quick_rebuild_packages_arg \
         $run_check_arg \
+        $toolchain_archive_arg \
         $use_ccache_arg
     displayName: "Build packages"