Merge pull request #2515 from ciband:feat/support_esp8266

PiperOrigin-RevId: 276333426

googlemock/src/gmock_main.cc

@@ -32,7 +32,10 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
-#ifdef ARDUINO
+#if GTEST_OS_ESP8266 || GTEST_OS_ESP32
+#if GTEST_OS_ESP8266
+extern "C" {
+#endif
 void setup() {
   // Since Google Mock depends on Google Test, InitGoogleMock() is
   // also responsible for initializing Google Test.  Therefore there's
@@ -40,6 +43,10 @@ void setup() {
   testing::InitGoogleMock();
 }
 void loop() { RUN_ALL_TESTS(); }
+#if GTEST_OS_ESP8266
+}
+#endif
+
 #else
 
 // MS C++ compiler/linker has a bug on Windows (not on Windows CE), which