gentoo-overlay/games-simulation/flightgear/files/0002-flightgear-3.4.0-cmake.patch

From 14405fe2e397b9a6ab9b004cb8c7459eeb41ec59 Mon Sep 17 00:00:00 2001
From: "Rebecca N. Palmer" <rebecca_palmer@zoho.com>
Date: Fri, 3 Apr 2015 19:15:52 +0100
Subject: [PATCH] Fix compile with CMake 3.2.1, by Kevin Seroux

Explicitly link X11, as this no longer comes with OpenGL
---
 CMakeLists.txt                | 1 +
 src/Main/CMakeLists.txt       | 4 +++-
 utils/fgviewer/CMakeLists.txt | 4 ++++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c881c32..c443f58 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -110,6 +110,7 @@ IF(APPLE)
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR
 	${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
     find_package(Threads REQUIRED)
+    find_package(X11 REQUIRED)
     
     set(USE_DBUS_DEFAULT 1)
 
diff --git a/src/Main/CMakeLists.txt b/src/Main/CMakeLists.txt
index 949b379..4b6926e 100644
--- a/src/Main/CMakeLists.txt
+++ b/src/Main/CMakeLists.txt
@@ -130,7 +130,9 @@ endif()
 if (CRASHRPT_FOUND)
 	target_link_libraries(fgfs ${CRASHRPT_LIBRARY})
 endif()
-
+if(X11_FOUND)
+    target_link_libraries(fgfs ${X11_LIBRARIES})
+endif()
 target_link_libraries(fgfs
 	${SQLITE3_LIBRARY}
 	${SIMGEAR_LIBRARIES}
diff --git a/utils/fgviewer/CMakeLists.txt b/utils/fgviewer/CMakeLists.txt
index 165be74..bfc52ad 100644
--- a/utils/fgviewer/CMakeLists.txt
+++ b/utils/fgviewer/CMakeLists.txt
@@ -42,6 +42,10 @@ else()
 endif()
 
 add_executable(fgviewer ${FGVIEWER_SOURCES} ${FGVIEWER_RTI_SOURCES})
+if(X11_FOUND)
+    target_link_libraries(fgviewer ${X11_LIBRARIES})
+endif()
+
 target_link_libraries(fgviewer
 	${SIMGEAR_LIBRARIES}
 	${OPENSCENEGRAPH_LIBRARIES}