diff --git a/src/file.cpp b/src/file.cpp
index 5668757..6889304 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -361,10 +361,14 @@ namespace bx
 
 	bool stat(const FilePath& _filePath, FileInfo& _outFileInfo)
 	{
+#if BX_CRT_NONE
+		BX_UNUSED(_filePath, _outFileInfo);
+		return false;
+#else
 		_outFileInfo.m_size = 0;
 		_outFileInfo.m_type = FileInfo::Count;
 
-#if BX_COMPILER_MSVC
+#	if BX_COMPILER_MSVC
 		struct ::_stat64 st;
 		int32_t result = ::_stat64(_filePath.get(), &st);
 
@@ -381,7 +385,7 @@ namespace bx
 		{
 			_outFileInfo.m_type = FileInfo::Directory;
 		}
-#else
+#	else
 		struct ::stat st;
 		int32_t result = ::stat(_filePath.get(), &st);
 		if (0 != result)
@@ -397,11 +401,12 @@ namespace bx
 		{
 			_outFileInfo.m_type = FileInfo::Directory;
 		}
-#endif // BX_COMPILER_MSVC
+#	endif // BX_COMPILER_MSVC
 
 		_outFileInfo.m_size = st.st_size;
 
 		return true;
+#endif // BX_CRT_NONE
 	}
 
 } // namespace bx
diff --git a/src/os.cpp b/src/os.cpp
index 7846ecb..0000f89 100644
--- a/src/os.cpp
+++ b/src/os.cpp
@@ -70,7 +70,8 @@ namespace bx
 #if BX_PLATFORM_WINDOWS
 		::Sleep(_ms);
 #elif  BX_PLATFORM_XBOXONE \
-	|| BX_PLATFORM_WINRT
+	|| BX_PLATFORM_WINRT   \
+	|| BX_CRT_NONE
 		BX_UNUSED(_ms);
 		debugOutput("sleep is not implemented"); debugBreak();
 #else
@@ -85,7 +86,8 @@ namespace bx
 #if BX_PLATFORM_WINDOWS
 		::SwitchToThread();
 #elif  BX_PLATFORM_XBOXONE \
-	|| BX_PLATFORM_WINRT
+	|| BX_PLATFORM_WINRT   \
+	|| BX_CRT_NONE
 		debugOutput("yield is not implemented"); debugBreak();
 #else
 		::sched_yield();
@@ -224,7 +226,8 @@ namespace bx
 		return result;
 #elif  BX_PLATFORM_PS4     \
 	|| BX_PLATFORM_XBOXONE \
-	|| BX_PLATFORM_WINRT
+	|| BX_PLATFORM_WINRT   \
+	|| BX_CRT_NONE
 		BX_UNUSED(_name, _out, _inOutSize);
 		return false;
 #else
@@ -253,7 +256,8 @@ namespace bx
 		::SetEnvironmentVariableA(_name, _value);
 #elif  BX_PLATFORM_PS4     \
 	|| BX_PLATFORM_XBOXONE \
-	|| BX_PLATFORM_WINRT
+	|| BX_PLATFORM_WINRT   \
+	|| BX_CRT_NONE
 		BX_UNUSED(_name, _value);
 #else
 		::setenv(_name, _value, 1);
@@ -266,7 +270,8 @@ namespace bx
 		::SetEnvironmentVariableA(_name, NULL);
 #elif  BX_PLATFORM_PS4     \
 	|| BX_PLATFORM_XBOXONE \
-	|| BX_PLATFORM_WINRT
+	|| BX_PLATFORM_WINRT   \
+	|| BX_CRT_NONE
 		BX_UNUSED(_name);
 #else
 		::unsetenv(_name);
@@ -277,7 +282,8 @@ namespace bx
 	{
 #if BX_PLATFORM_PS4     \
  || BX_PLATFORM_XBOXONE \
- || BX_PLATFORM_WINRT
+ || BX_PLATFORM_WINRT   \
+ || BX_CRT_NONE
 		BX_UNUSED(_path);
 		return -1;
 #elif BX_CRT_MSVC