Clean up CMake library specification

The X11 libraries don't need to be specified when doing dynamic linking

CMakeLists.txt

@@ -6,6 +6,7 @@ project(citra)
 
 if (NOT MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-attributes")
+    add_definitions(-pthread)
 else()
     # Silence deprecation warnings
     add_definitions(/D_CRT_SECURE_NO_WARNINGS)
@@ -75,10 +76,6 @@ if (ENABLE_GLFW)
 
         set(GLFW_LIBRARIES glfw3)
     else()
-        if (NOT APPLE)
-            find_package(X11 REQUIRED)
-        endif()
-
         find_package(PkgConfig REQUIRED)
         pkg_search_module(GLFW REQUIRED glfw3)
     endif()

src/citra/CMakeLists.txt

@@ -12,22 +12,20 @@ set(HEADERS
 
 create_directory_groups(${SRCS} ${HEADERS})
 
-# NOTE: This is a workaround for CMake bug 0006976 (missing X11_xf86vmode_LIB variable)
-if (NOT X11_xf86vmode_LIB)
-    set(X11_xv86vmode_LIB Xxf86vm)
-endif()
-
 add_executable(citra ${SRCS} ${HEADERS})
 target_link_libraries(citra core common video_core)
 target_link_libraries(citra ${OPENGL_gl_LIBRARY} ${GLFW_LIBRARIES} inih)
 
+if (UNIX)
+    target_link_libraries(citra -pthread)
+endif()
+
 if (APPLE)
-    target_link_libraries(citra iconv pthread ${COREFOUNDATION_LIBRARY})
+    target_link_libraries(citra iconv ${COREFOUNDATION_LIBRARY})
 elseif (WIN32)
     target_link_libraries(citra winmm)
 else() # Unix
-    target_link_libraries(citra pthread rt)
-    target_link_libraries(citra ${X11_X11_LIB} ${X11_Xi_LIB} ${X11_Xcursor_LIB} ${X11_Xrandr_LIB} ${X11_xv86vmode_LIB})
+    target_link_libraries(citra rt)
 endif()
 
 #install(TARGETS citra RUNTIME DESTINATION ${bindir})

src/citra_qt/CMakeLists.txt

@@ -60,6 +60,10 @@ add_executable(citra-qt ${SRCS} ${HEADERS} ${UI_HDRS})
 target_link_libraries(citra-qt core common video_core qhexedit)
 target_link_libraries(citra-qt ${OPENGL_gl_LIBRARY} ${CITRA_QT_LIBS})
 
+if (UNIX)
+    target_link_libraries(citra-qt -pthread)
+endif()
+
 if (APPLE)
     target_link_libraries(citra-qt iconv ${COREFOUNDATION_LIBRARY})
 elseif (WIN32)