feat: Add ESP8266 support

* Added support for ESP8266
* Removed previous Arduino defines in favor
  of GTEST_OS_* syntax
* Improved PlatformIO library file to be more
  stable when consumed in client applications.

3 files changed, 15 insertions, 3 deletions

diff --git a/googletest/src/gtest-filepath.cc b/googletest/src/gtest-filepath.cc
index bd7b99f..7e03e81 100644
--- a/googletest/src/gtest-filepath.cc
+++ b/googletest/src/gtest-filepath.cc
@@ -93,7 +93,7 @@ static bool IsPathSeparator(char c) {
 // Returns the current working directory, or "" if unsuccessful.
 FilePath FilePath::GetCurrentDir() {
 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || \
-    GTEST_OS_WINDOWS_RT || ARDUINO || defined(ESP_PLATFORM)
+    GTEST_OS_WINDOWS_RT || GTEST_OS_ESP8266 || GTEST_OS_ESP32
   // These platforms do not have a current directory, so we just return
   // something reasonable.
   return FilePath(kCurrentDirectoryString);
@@ -236,7 +236,7 @@ bool FilePath::DirectoryExists() const {
     result = true;
   }
 #else
-  posix::StatStruct file_stat;
+  posix::StatStruct file_stat = {};
   result = posix::Stat(path.c_str(), &file_stat) == 0 &&
       posix::IsDir(file_stat);
 #endif  // GTEST_OS_WINDOWS_MOBILE
@@ -323,6 +323,9 @@ bool FilePath::CreateFolder() const {
   delete [] unicode;
 #elif GTEST_OS_WINDOWS
   int result = _mkdir(pathname_.c_str());
+#elif GTEST_OS_ESP8266
+  // do nothing
+  int result = 0;
 #else
   int result = mkdir(pathname_.c_str(), 0777);
 #endif  // GTEST_OS_WINDOWS_MOBILE
diff --git a/googletest/src/gtest.cc b/googletest/src/gtest.cc
index a5b4e5a..a11ce18 100644
--- a/googletest/src/gtest.cc
+++ b/googletest/src/gtest.cc
@@ -4508,6 +4508,7 @@ class ScopedPrematureExitFile {
   }
 
   ~ScopedPrematureExitFile() {
+    #if !defined GTEST_OS_ESP8266
     if (!premature_exit_filepath_.empty()) {
       int retval = remove(premature_exit_filepath_.c_str());
       if (retval) {
@@ -4516,6 +4517,7 @@ class ScopedPrematureExitFile {
                           << retval;
       }
     }
+    #endif
   }
 
  private:
diff --git a/googletest/src/gtest_main.cc b/googletest/src/gtest_main.cc
index f6e1dd9..3747925 100644
--- a/googletest/src/gtest_main.cc
+++ b/googletest/src/gtest_main.cc
@@ -30,13 +30,20 @@
 #include <cstdio>
 #include "gtest/gtest.h"
 
-#ifdef ARDUINO
+#if GTEST_OS_ESP8266 || GTEST_OS_ESP32
+# if GTEST_OS_ESP8266
+extern "C" {
+# endif
 void setup() {
   testing::InitGoogleTest();
 }
 
 void loop() { RUN_ALL_TESTS(); }
 
+# if GTEST_OS_ESP8266
+}
+# endif
+
 #else
 
 GTEST_API_ int main(int argc, char **argv) {