diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bedf8bc..4d0a07b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,6 +25,9 @@ add_definitions( -DSIM_VERTICALSYNC )
 
 if( UNIX )
     add_definitions( -D_LINUX_ )
+    if( APPLE )
+        add_definitions( -D_APPLE_ )
+    endif()
 elseif( WIN32 )
     add_definitions( -DWIN32 )
     add_definitions( -D_WINDOWS )
@@ -61,7 +64,13 @@ if( WIN32 )
 endif()
 
 if( UNIX )
-    find_package( Qt5 COMPONENTS Core Widgets OpenGL Svg X11Extras Xml REQUIRED )
+    set( qt5_components Core Widgets OpenGL Svg Xml )
+    if( NOT( APPLE ) )
+        set( qt5_components ${qt5_components} X11Extras )
+    endif()
+
+    find_package( Qt5 COMPONENTS ${qt5_components} REQUIRED )
+    unset( qt5_components )
 endif()
 
 ################################################################################
@@ -173,10 +182,7 @@ endif()
 
 ################################################################################
 
-target_link_libraries( ${PROJECT_NAME}
-
-    -Wl,--start-group
-
+set( LOCAL_LIBS
     cgi
     fdm
     fdm_aw101
@@ -193,8 +199,22 @@ target_link_libraries( ${PROJECT_NAME}
     hid
     nav
     sfx
+)
 
-    ${LIBS}
+if( APPLE )
+    target_link_libraries( ${PROJECT_NAME}
+        ${LOCAL_LIBS}
 
-    -Wl,--end-group
-)
+        ${LIBS}
+    )
+else()
+    target_link_libraries( ${PROJECT_NAME}
+        -Wl,--start-group
+
+        ${LOCAL_LIBS}
+
+        ${LIBS}
+
+        -Wl,--end-group
+    )
+endif()
diff --git a/src/fdm/auto/fdm_Autopilot.cpp b/src/fdm/auto/fdm_Autopilot.cpp
index 784b115..5e13bb2 100644
--- a/src/fdm/auto/fdm_Autopilot.cpp
+++ b/src/fdm/auto/fdm_Autopilot.cpp
@@ -20,6 +20,9 @@
  * IN THE SOFTWARE.
  ******************************************************************************/
 
+#include <cmath>
+#include <cfloat>
+
 #include <fdm/auto/fdm_Autopilot.h>
 
 #include <fdm/utils/fdm_Misc.h>
diff --git a/src/fdm/fdm_Manager.cpp b/src/fdm/fdm_Manager.cpp
index af0707e..46c5d87 100644
--- a/src/fdm/fdm_Manager.cpp
+++ b/src/fdm/fdm_Manager.cpp
@@ -22,6 +22,8 @@
 
 #include <fdm/fdm_Manager.h>
 
+#include <cmath>
+#include <cfloat>
 #include <cstring>
 
 #include <fdm/fdm_Log.h>
diff --git a/src/fdm/fdm_Path.h b/src/fdm/fdm_Path.h
index 53d8868..97c3f08 100644
--- a/src/fdm/fdm_Path.h
+++ b/src/fdm/fdm_Path.h
@@ -59,7 +59,9 @@ class FDMEXPORT Path
         return "../data/" + path;
 #       else
 
-#       ifdef _LINUX_
+#       if defined(_APPLE_)
+        return "mscsim-data/data/" + path;
+#       elif defined(_LINUX_)
         return "/usr/share/mscsim/data/" + path;
 #       endif
 
diff --git a/src/fdm/models/fdm_MainRotor.cpp b/src/fdm/models/fdm_MainRotor.cpp
index 356cdf8..7deba05 100644
--- a/src/fdm/models/fdm_MainRotor.cpp
+++ b/src/fdm/models/fdm_MainRotor.cpp
@@ -20,6 +20,9 @@
  * IN THE SOFTWARE.
  ******************************************************************************/
 
+#include <cmath>
+#include <cfloat>
+
 #include <fdm/models/fdm_MainRotor.h>
 #include <fdm/main/fdm_Aerodynamics.h>
 
diff --git a/src/fdm/models/fdm_TailRotor.cpp b/src/fdm/models/fdm_TailRotor.cpp
index 2aa011d..02899a4 100644
--- a/src/fdm/models/fdm_TailRotor.cpp
+++ b/src/fdm/models/fdm_TailRotor.cpp
@@ -20,6 +20,9 @@
  * IN THE SOFTWARE.
  ******************************************************************************/
 
+#include <cmath>
+#include <cfloat>
+
 #include <fdm/models/fdm_TailRotor.h>
 #include <fdm/main/fdm_Aerodynamics.h>
 
diff --git a/src/fdm_c172/c172_KFC325_FD.cpp b/src/fdm_c172/c172_KFC325_FD.cpp
index d1e51ca..7926f0f 100644
--- a/src/fdm_c172/c172_KFC325_FD.cpp
+++ b/src/fdm_c172/c172_KFC325_FD.cpp
@@ -20,6 +20,9 @@
  * IN THE SOFTWARE.
  ******************************************************************************/
 
+#include <cmath>
+#include <cfloat>
+
 #include <fdm_c172/c172_KFC325_FD.h>
 
 #include <fdm/fdm_Log.h>
diff --git a/src/g1000/g1000_Path.h b/src/g1000/g1000_Path.h
index 7f580f4..959d66c 100644
--- a/src/g1000/g1000_Path.h
+++ b/src/g1000/g1000_Path.h
@@ -57,7 +57,9 @@ class Path
         return "../" + path;
 #       else
 
-#       ifdef _LINUX_
+#       if defined(_APPLE_)
+        return "mscsim-data/" + path;
+#       elif defined(_LINUX_)
         return "/usr/share/mscsim/" + path;
 #       endif
 
diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
index 84a55e0..36c9ad5 100644
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -120,5 +120,11 @@ if( WIN32 )
 endif()
 
 if( UNIX )
-    qt5_use_modules( ${MODULE_NAME} Widgets OpenGL Svg X11Extras Xml )
+    set( qt5_modules Widgets OpenGL Svg Xml)
+    if( NOT( APPLE ) )
+        set( qt5_modules ${qt5_modules} X11Extras )
+    endif()
+
+    qt5_use_modules( ${MODULE_NAME} ${qt5_modules} )
+    unset( qt5_modules )
 endif()
diff --git a/src/gui/ScreenSaver.cpp b/src/gui/ScreenSaver.cpp
index a39a2d4..cd29c39 100644
--- a/src/gui/ScreenSaver.cpp
+++ b/src/gui/ScreenSaver.cpp
@@ -26,7 +26,7 @@
 #   include <windows.h>
 #endif
 
-#ifdef _LINUX_
+#if defined(_LINUX_) && !defined(_APPLE_)
 #   include <QX11Info>
 #   include <X11/extensions/scrnsaver.h>
 #   include <X11/Xlib.h>
@@ -40,7 +40,7 @@ void ScreenSaver::disable()
     SetThreadExecutionState( ES_CONTINUOUS | ES_DISPLAY_REQUIRED | ES_SYSTEM_REQUIRED );
 #   endif
 
-#   ifdef _LINUX_
+#   if defined(_LINUX_) && !defined(_APPLE_)
     XScreenSaverSuspend( QX11Info::display(), True );
 #   endif
 }
@@ -53,7 +53,7 @@ void ScreenSaver::enable()
     SetThreadExecutionState( ES_CONTINUOUS );
 #   endif
 
-#   ifdef _LINUX_
+#   if defined(_LINUX_) && !defined(_APPLE_)
     XScreenSaverSuspend( QX11Info::display(), False );
 #   endif
 }
@@ -62,7 +62,7 @@ void ScreenSaver::enable()
 
 void ScreenSaver::reset()
 {
-#   ifdef _LINUX_
+#   if defined(_LINUX_) && !defined(_APPLE_)
     XResetScreenSaver( QX11Info::display() );
 #   endif
 }
diff --git a/src/hid/hid_Joysticks.cpp b/src/hid/hid_Joysticks.cpp
index 4e48a68..3eb8fd6 100644
--- a/src/hid/hid_Joysticks.cpp
+++ b/src/hid/hid_Joysticks.cpp
@@ -64,6 +64,7 @@ const std::string Joysticks::_axisNames[] = { "X", "Y", "Z",
 Joysticks::Joysticks() :
     _count ( 0 )
 {
+#ifndef _APPLE_
 #   ifdef HID_WINMM_JOYSTICK
     _buttons[  0 ] = JOY_BUTTON1;
     _buttons[  1 ] = JOY_BUTTON2;
@@ -132,6 +133,7 @@ Joysticks::Joysticks() :
         _data[ i ].hasPOV = false;
 #       endif
     }
+#endif
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -142,6 +144,7 @@ Joysticks::~Joysticks() {}
 
 void Joysticks::init()
 {
+#ifndef _APPLE_
 #   ifdef HID_LINUX_JOYSTICK
     for ( int i = 0; i < HID_MAX_JOYS; i++ )
     {
@@ -382,12 +385,14 @@ void Joysticks::init()
         if ( joyIdTemp == JOYSTICKID1 ) joyIdTemp = JOYSTICKID2;
     }
 #   endif
+#endif
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void Joysticks::update()
 {
+#ifndef _APPLE_
 #   ifdef HID_LINUX_JOYSTICK
     for( short i = 0; i < _count && i < HID_MAX_JOYS; i++ )
     {
@@ -515,12 +520,16 @@ void Joysticks::update()
         if ( joyIdTemp == JOYSTICKID1 ) joyIdTemp = JOYSTICKID2;
     }
 #   endif
+#endif
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 Joysticks::Data Joysticks::getData( short joyNum ) const
 {
+#ifdef _APPLE_
+    return Joysticks::Data();
+#else
     if ( joyNum < 0 && joyNum >= HID_MAX_JOYS )
     {
         Log::e() << "Wrong joystick index number." << std::endl;
@@ -531,4 +540,5 @@ Joysticks::Data Joysticks::getData( short joyNum ) const
     }
 
     return _data[ joyNum ];
+#endif
 }
diff --git a/src/hid/hid_Joysticks.h b/src/hid/hid_Joysticks.h
index c030141..ab9d809 100644
--- a/src/hid/hid_Joysticks.h
+++ b/src/hid/hid_Joysticks.h
@@ -36,7 +36,7 @@
 
 #include <string>
 
-#ifdef HID_LINUX_JOYSTICK
+#if defined(HID_LINUX_JOYSTICK) && !defined(_APPLE_)
 #   include <fcntl.h>
 #   include <unistd.h>
 #   include <linux/joystick.h>
@@ -193,7 +193,7 @@ class Joysticks : public Singleton< Joysticks >
 
     Joysticks::Data _data[ HID_MAX_JOYS ];      ///< joysticks data
 
-#   ifdef HID_LINUX_JOYSTICK
+#   if defined(HID_LINUX_JOYSTICK) && !defined(_APPLE_)
     int _fd[ HID_MAX_JOYS ];                    ///<
     js_event _event;                            ///< joystick event
 #   endif
diff --git a/src/sfx/sfx_Manager.h b/src/sfx/sfx_Manager.h
index 438c90b..39c000c 100644
--- a/src/sfx/sfx_Manager.h
+++ b/src/sfx/sfx_Manager.h
@@ -24,8 +24,13 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
-#include <AL/al.h>
-#include <AL/alc.h>
+#ifdef _APPLE_
+    #include <OpenAL/al.h>
+    #include <OpenAL/alc.h>
+#else
+    #include <AL/al.h>
+    #include <AL/alc.h>
+#endif
 
 #include <Data.h>
 #include <Defines.h>
diff --git a/src/sfx/sfx_Sample.cpp b/src/sfx/sfx_Sample.cpp
index ae1cafb..3e29abd 100644
--- a/src/sfx/sfx_Sample.cpp
+++ b/src/sfx/sfx_Sample.cpp
@@ -203,31 +203,12 @@ bool Sample::checkForErrors()
 
 bool Sample::loadFile( const char *file )
 {
-    bool error = false;
-
-    // loading audio stream to buffer
-    ALenum format = 0;
-    ALsizei size = 0;
-    ALsizei freq = 0;
-
-    ALvoid *data = NULLPTR;
-    ALboolean loop = AL_FALSE;
-
     const size_t size_max = 4096;
     ALbyte file_temp[ size_max ];
     size_t size_str = ( strlen( file ) < size_max ) ? ( strlen( file ) + 1 ) : size_max;
     memcpy( file_temp, file, size_str );
 
-    alutLoadWAVFile( file_temp, &format, &data, &size, &freq, &loop );
-
-    error = checkForErrors();
-
-    // loading the raw audio stream into our buffer:
-    if ( !error )
-    {
-        alBufferData( _buffer, format, data, size, freq );
-        error = checkForErrors();
-    }
+    _buffer = alutCreateBufferFromFile( file_temp );
 
-    return error;
+    return checkForErrors();
 }
diff --git a/src/sfx/sfx_Sample.h b/src/sfx/sfx_Sample.h
index 19e6cf5..a809bca 100644
--- a/src/sfx/sfx_Sample.h
+++ b/src/sfx/sfx_Sample.h
@@ -26,8 +26,13 @@
 
 #include <string>
 
-#include <AL/al.h>
-#include <AL/alc.h>
+#ifdef _APPLE_
+    #include <OpenAL/al.h>
+    #include <OpenAL/alc.h>
+#else
+    #include <AL/al.h>
+    #include <AL/alc.h>
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////