Don't archive preexisting archives if commandline is too long

legacy/builder/phases/linker.go

@@ -78,6 +78,10 @@ func link(ctx *types.Context, objectFiles paths.PathList, coreDotARelPath *paths
 		properties := buildProperties.Clone()
 		archives := paths.NewPathList()
 		for _, object := range objectFiles {
+			if object.HasSuffix(".a") {
+				archives.Add(object)
+				continue
+			}
 			archive := object.Parent().Join("objs.a")
 			if !archives.Contains(archive) {
 				archives.Add(archive)

test/test_compile.py

@@ -594,3 +594,25 @@ def test_compile_with_custom_libraries(run_command, copy_sketch):
     # This compile command has been taken from this issue:
     # https://github.com/arduino/arduino-cli/issues/973
     assert run_command(f"compile --libraries {first_lib},{second_lib} -b {fqbn} {sketch_path}")
+
+
+def test_compile_with_archives_and_long_paths(run_command):
+    # Creates config with additional URL to install necessary core
+    url = "http://arduino.esp8266.com/stable/package_esp8266com_index.json"
+    assert run_command(f"config init --dest-dir . --additional-urls {url}")
+
+    # Init the environment explicitly
+    assert run_command("update")
+
+    # Install core to compile
+    assert run_command("core install esp8266:esp8266")
+
+    # Install test library
+    assert run_command("lib install ArduinoIoTCloud")
+
+    result = run_command("lib examples ArduinoIoTCloud --format json")
+    assert result.ok
+    lib_output = json.loads(result.stdout)
+    sketch_path = Path(lib_output[0]["library"]["install_dir"], "examples", "ArduinoIoTCloud-Advanced")
+
+    assert run_command(f"compile -b esp8266:esp8266:huzzah {sketch_path}")