CMake: Use -isystem for third party headers

diff --git a/cmake/macros/macro_deal_ii_setup_target.cmake b/cmake/macros/macro_deal_ii_setup_target.cmake
index cd1601e1633b1133aad6bd0321d9d31cac71b1f4..597f4360af2b85926060deac6ff9d63addf796e4 100644 (file)
--- a/cmake/macros/macro_deal_ii_setup_target.cmake
+++ b/cmake/macros/macro_deal_ii_setup_target.cmake
@@ -103,9 +103,8 @@ MACRO(DEAL_II_SETUP_TARGET _target)
     SET(_build "RELEASE")
   ENDIF()
 
-  SET_PROPERTY(TARGET ${_target} APPEND PROPERTY
-    INCLUDE_DIRECTORIES "${DEAL_II_INCLUDE_DIRS}"
-    )
+  TARGET_INCLUDE_DIRECTORIES(${_target} SYSTEM PRIVATE ${DEAL_II_INCLUDE_DIRS})
+
   SET_PROPERTY(TARGET ${_target} APPEND_STRING PROPERTY
     LINK_FLAGS " ${DEAL_II_LINKER_FLAGS} ${DEAL_II_LINKER_FLAGS_${_build}}"
     )

diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 14c2e42fd1a9ecb19a239160e8049d69d8edd03b..cb8317746623b4ead8a07b4e88d70e1ac9827ffe 100644 (file)
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -23,6 +23,7 @@ INCLUDE_DIRECTORIES(
   ${CMAKE_BINARY_DIR}/include/
   ${CMAKE_SOURCE_DIR}/include/
   ${DEAL_II_BUNDLED_INCLUDE_DIRS}
+  SYSTEM
   ${DEAL_II_INCLUDE_DIRS}
   )