From e1fc85d6101988f1a79102936923c8841fad9828 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Fri, 30 Apr 2021 01:24:42 +0300
Subject: [PATCH] Print warnings about unsupported OS/compiler only once.

---
 tdutils/CMakeLists.txt             |  1 +
 tdutils/td/utils/port/platform.cpp | 23 +++++++++++++++++++++++
 tdutils/td/utils/port/platform.h   | 10 +++++-----
 3 files changed, 29 insertions(+), 5 deletions(-)
 create mode 100644 tdutils/td/utils/port/platform.cpp

diff --git a/tdutils/CMakeLists.txt b/tdutils/CMakeLists.txt
index 2fb587663..7fe0d9340 100644
--- a/tdutils/CMakeLists.txt
+++ b/tdutils/CMakeLists.txt
@@ -51,6 +51,7 @@ set(TDUTILS_SOURCE
   td/utils/port/IPAddress.cpp
   td/utils/port/MemoryMapping.cpp
   td/utils/port/path.cpp
+  td/utils/port/platform.cpp
   td/utils/port/PollFlags.cpp
   td/utils/port/rlimit.cpp
   td/utils/port/ServerSocketFd.cpp
diff --git a/tdutils/td/utils/port/platform.cpp b/tdutils/td/utils/port/platform.cpp
new file mode 100644
index 000000000..615cc8b65
--- /dev/null
+++ b/tdutils/td/utils/port/platform.cpp
@@ -0,0 +1,23 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/utils/port/platform.h"
+
+#if !TD_MSVC
+
+#if TD_DARWIN_UNKNOWN
+#warning "Probably unsupported Apple operating system. Feel free to try to compile"
+#endif
+
+#if TD_UNIX_UNKNOWN
+#warning "Probably unsupported Unix operating system. Feel free to try to compile"
+#endif
+
+#if TD_COMPILER_UNKNOWN
+#warning "Probably unsupported compiler. Feel free to try to compile"
+#endif
+
+#endif
\ No newline at end of file
diff --git a/tdutils/td/utils/port/platform.h b/tdutils/td/utils/port/platform.h
index 1a596c3ed..fb881f134 100644
--- a/tdutils/td/utils/port/platform.h
+++ b/tdutils/td/utils/port/platform.h
@@ -20,7 +20,7 @@
 #elif defined(__APPLE__)
   #include "TargetConditionals.h"
   #if TARGET_OS_IPHONE
-    // iOS/watchOS/tvOS
+    // iOS/iPadOS/watchOS/tvOS
     #if TARGET_OS_IOS
       #define TD_DARWIN_IOS 1
     #elif TARGET_OS_TV
@@ -28,13 +28,13 @@
     #elif TARGET_OS_WATCH
       #define TD_DARWIN_WATCH_OS 1
     #else
-      #warning "Probably unsupported Apple iPhone platform. Feel free to try to compile"
+      #define TD_DARWIN_UNKNOWN 1
     #endif
   #elif TARGET_OS_MAC
     // Other kinds of macOS
     #define TD_DARWIN_MAC 1
   #else
-    #warning "Probably unsupported Apple platform. Feel free to try to compile"
+    #define TD_DARWIN_UNKNOWN 1
   #endif
   #define TD_DARWIN 1
 #elif defined(ANDROID) || defined(__ANDROID__)
@@ -55,7 +55,7 @@
   #define TD_EMSCRIPTEN 1
 #elif defined(TD_ILLUMOS)
 #elif defined(__unix__)  // all unices not caught above
-  #warning "Probably unsupported Unix platform. Feel free to try to compile"
+  #define TD_UNIX_UNKNOWN 1
   #define TD_CYGWIN 1
 #else
   #error "Probably unsupported platform. Feel free to remove the error and try to recompile"
@@ -70,7 +70,7 @@
 #elif defined(_MSC_VER)
   #define TD_MSVC 1
 #else
-  #warning "Probably unsupported compiler. Feel free to try to compile"
+  #define TD_COMPILER_UNKNOWN 1
 #endif
 
 #if TD_GCC || TD_CLANG || TD_INTEL