From 2faa3f6c55d2288316419f3efb8a483904a295f2 Mon Sep 17 00:00:00 2001
From: Marc Chevrier <marc.chevrier@gmail.com>
Date: Mon, 4 May 2020 23:22:02 +0200
Subject: Refactoring: Third-parties public headers are under cm3p prefix

Fixes: #20666
---
 CMakeLists.txt | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32a483db13..166b6648e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -376,10 +376,13 @@ macro (CMAKE_BUILD_UTILITIES)
     include_directories(SYSTEM "${CMake_SOURCE_DIR}/Utilities/std")
   endif()
 
-  include_directories(
-    ${CMake_BINARY_DIR}/Utilities
-    ${CMake_SOURCE_DIR}/Utilities
-    )
+  include_directories("${CMake_BINARY_DIR}/Utilities")
+  if ((CMAKE_SYSTEM_NAME STREQUAL "AIX" OR CMAKE_SYSTEM_NAME STREQUAL "OS400") AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    # using -isystem option generate error "template with C linkage"
+    include_directories("${CMake_SOURCE_DIR}/Utilities")
+  else()
+    include_directories(SYSTEM "${CMake_SOURCE_DIR}/Utilities")
+  endif()
 
   #---------------------------------------------------------------------
   # Build CMake std library for CMake and CTest.
-- 
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