Mark system include paths correctly

This makes sure the compiler doesn't complain about problems in those
files.

common/rdr/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(${CMAKE_SOURCE_DIR}/common)
-include_directories(${ZLIB_INCLUDE_DIRS})
+include_directories(SYSTEM ${ZLIB_INCLUDE_DIRS})
 
 add_library(rdr STATIC
   AESInStream.cxx
@@ -22,11 +22,11 @@ add_library(rdr STATIC
 target_link_libraries(rdr ${ZLIB_LIBRARIES} os)
 
 if(GNUTLS_FOUND)
-  include_directories(${GNUTLS_INCLUDE_DIR})
+  include_directories(SYSTEM ${GNUTLS_INCLUDE_DIR})
   target_link_libraries(rdr ${GNUTLS_LIBRARIES})
 endif()
 if (NETTLE_FOUND)
-  include_directories(${NETTLE_INCLUDE_DIRS})
+  include_directories(SYSTEM ${NETTLE_INCLUDE_DIRS})
   target_link_libraries(rdr ${NETTLE_LIBRARIES})
   target_link_directories(rdr PUBLIC ${NETTLE_LIBRARY_DIRS})
 endif()

common/rfb/CMakeLists.txt

@@ -1,6 +1,6 @@
 include_directories(${CMAKE_SOURCE_DIR}/common)
-include_directories(${JPEG_INCLUDE_DIR})
-include_directories(${PIXMAN_INCLUDE_DIRS})
+include_directories(SYSTEM ${JPEG_INCLUDE_DIR})
+include_directories(SYSTEM ${PIXMAN_INCLUDE_DIRS})
 
 add_library(rfb STATIC
   Blacklist.cxx
@@ -77,7 +77,7 @@ if(ENABLE_H264 AND NOT H264_LIBS STREQUAL "NONE")
   elseif(H264_LIBS STREQUAL "WIN")
     target_sources(rfb PRIVATE H264WinDecoderContext.cxx)
   endif()
-  include_directories(${H264_INCLUDE_DIRS})
+  include_directories(SYSTEM ${H264_INCLUDE_DIRS})
   target_link_libraries(rfb ${H264_LIBRARIES})
   target_link_directories(rfb PUBLIC ${H264_LIBRARY_DIRS})
 endif()
@@ -98,14 +98,14 @@ endif()
 
 if(GNUTLS_FOUND)
   target_sources(rfb PRIVATE CSecurityTLS.cxx SSecurityTLS.cxx)
-  include_directories(${GNUTLS_INCLUDE_DIR})
+  include_directories(SYSTEM ${GNUTLS_INCLUDE_DIR})
   target_link_libraries(rfb ${GNUTLS_LIBRARIES})
 endif()
 
 if (NETTLE_FOUND)
   target_sources(rfb PRIVATE CSecurityDH.cxx CSecurityMSLogonII.cxx
                  CSecurityRSAAES.cxx SSecurityRSAAES.cxx)
-  include_directories(${NETTLE_INCLUDE_DIRS} ${GMP_INCLUDE_DIRS})
+  include_directories(SYSTEM ${NETTLE_INCLUDE_DIRS} ${GMP_INCLUDE_DIRS})
   target_link_libraries(rfb ${HOGWEED_LIBRARIES}
                         ${NETTLE_LIBRARIES} ${GMP_LIBRARIES})
   target_link_directories(rfb PUBLIC ${HOGWEED_LIBRARY_DIRS}

tests/perf/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(${CMAKE_SOURCE_DIR}/common)
-include_directories(${GETTEXT_INCLUDE_DIR})
+include_directories(SYSTEM ${GETTEXT_INCLUDE_DIR})
 
 add_library(test_util STATIC util.cxx)
 
@@ -13,7 +13,7 @@ add_executable(encperf encperf.cxx)
 target_link_libraries(encperf test_util rfb)
 
 if (BUILD_VIEWER)
-  include_directories(${FLTK_INCLUDE_DIR})
+  include_directories(SYSTEM ${FLTK_INCLUDE_DIR})
   add_executable(fbperf
     fbperf.cxx
     ${CMAKE_SOURCE_DIR}/vncviewer/PlatformPixelBuffer.cxx

tests/unit/CMakeLists.txt

@@ -1,6 +1,6 @@
 include_directories(${CMAKE_SOURCE_DIR}/common)
 include_directories(${CMAKE_SOURCE_DIR}/vncviewer)
-include_directories(${GETTEXT_INCLUDE_DIR})
+include_directories(SYSTEM ${GETTEXT_INCLUDE_DIR})
 
 add_executable(conv conv.cxx)
 target_link_libraries(conv rfb)

unix/tx/CMakeLists.txt

@@ -1,4 +1,4 @@
-include_directories(${X11_INCLUDE_DIR})
+include_directories(SYSTEM ${X11_INCLUDE_DIR})
 
 include_directories(${CMAKE_SOURCE_DIR}/common)
 include_directories(${CMAKE_SOURCE_DIR}/common/rfb)

unix/vncconfig/CMakeLists.txt

@@ -1,4 +1,4 @@
-include_directories(${X11_INCLUDE_DIR})
+include_directories(SYSTEM ${X11_INCLUDE_DIR})
 
 include_directories(${CMAKE_SOURCE_DIR}/common)
 include_directories(${CMAKE_SOURCE_DIR}/unix/tx)

unix/x0vncserver/CMakeLists.txt

@@ -1,4 +1,4 @@
-include_directories(${X11_INCLUDE_DIR})
+include_directories(SYSTEM ${X11_INCLUDE_DIR})
 include_directories(${CMAKE_SOURCE_DIR}/unix/common)
 include_directories(${CMAKE_SOURCE_DIR}/unix/tx)
 include_directories(${CMAKE_SOURCE_DIR}/unix)

vncviewer/CMakeLists.txt

@@ -1,5 +1,5 @@
-include_directories(${FLTK_INCLUDE_DIR})
-include_directories(${GETTEXT_INCLUDE_DIR})
+include_directories(SYSTEM ${FLTK_INCLUDE_DIR})
+include_directories(SYSTEM ${GETTEXT_INCLUDE_DIR})
 
 include_directories(${CMAKE_SOURCE_DIR}/common)