From 22f8a465d7de84b246f6d5ec0e05984b5610122f Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Fri, 9 Jun 2017 16:28:32 -0400
Subject: Android: Do not pass sysroot include for standalone toolchain

The change in commit v3.8.0-rc1~60^2 (Android: Pass sysroot include
directory explicitly, 2017-01-20) does not make sense when compiling
with a standalone toolchain which is tied to a single API version.
Drop the explicit include directory so that the compiler uses its
default system include order.

Fixes: #16954
---
 Modules/Platform/Android-Common.cmake | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Modules/Platform/Android-Common.cmake b/Modules/Platform/Android-Common.cmake
index cf2785a..78938dc 100644
--- a/Modules/Platform/Android-Common.cmake
+++ b/Modules/Platform/Android-Common.cmake
@@ -156,6 +156,11 @@ macro(__android_compiler_common lang)
   # necessary so that Android API-version-specific headers are preferred
   # over those in the toolchain's `include-fixed` directory (which cannot
   # possibly match all versions).
-  list(APPEND CMAKE_${lang}_STANDARD_INCLUDE_DIRECTORIES "${CMAKE_SYSROOT}/usr/include")
-  list(REMOVE_ITEM CMAKE_${lang}_IMPLICIT_INCLUDE_DIRECTORIES "/usr/include")
+  #
+  # Do not do this for a standalone toolchain because it is already
+  # tied to a specific API version.
+  if(CMAKE_ANDROID_NDK)
+    list(APPEND CMAKE_${lang}_STANDARD_INCLUDE_DIRECTORIES "${CMAKE_SYSROOT}/usr/include")
+    list(REMOVE_ITEM CMAKE_${lang}_IMPLICIT_INCLUDE_DIRECTORIES "/usr/include")
+  endif()
 endmacro()
-- 
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