This is a concatenation of the following two patches:

  https://github.com/jcowgill/M.A.R.S./commit/33d5affabf8ff84f2c028b9303c6a9e83cc824ad.patch
  https://patch-diff.githubusercontent.com/raw/thelaui/M.A.R.S./pull/2.patch

Their purpose is to allow Mars to be built against the latest version of SFML.

From 33d5affabf8ff84f2c028b9303c6a9e83cc824ad Mon Sep 17 00:00:00 2001
From: James Cowgill <james410@cowgill.org.uk>
Date: Sat, 9 May 2015 01:54:14 +0100
Subject: [PATCH] Remove dependency on GLU - fixes build with SFML 2.3

---
 premake4.lua           |  8 ++++----
 src/Shaders/postFX.cpp |  2 +-
 src/System/window.cpp  | 12 ++++++------
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/premake4.lua b/premake4.lua
index 023dddd..5af4495 100755
--- a/premake4.lua
+++ b/premake4.lua
@@ -11,11 +11,11 @@ project "mars"
     defines { "NDEBUG" }
     flags   { "Optimize" }
     if os.get() == "windows" then
-      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "glu32", "opengl32", "fribidi-0", "tag" }
+      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "opengl32", "fribidi-0", "tag" }
     elseif os.get() == "macosx" then
       links { "sfml-graphics.framework", "sfml-audio.framework", "sfml-system.framework", "sfml-window.framework", "opengl.framework", "fribidi", "tag" }
     else
-      links { "GLU", "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "fribidi", "tag" }
+      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "fribidi", "tag" }
       libdirs { "/usr/lib", "/usr/local/lib" }
     end
     
@@ -23,10 +23,10 @@ project "mars"
     defines { "_DEBUG", "DEBUG" }
     flags   { "Symbols" }
     if os.get() == "windows" then
-      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "glu32", "opengl32", "fribidi-0", "tag" }
+      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "opengl32", "fribidi-0", "tag" }
     elseif os.get() == "macosx" then
       links { "sfml-graphics.framework", "sfml-audio.framework", "sfml-system.framework", "sfml-window.framework", "opengl.framework", "fribidi", "tag" }
     else
-      links { "GLU", "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "fribidi", "tag" }
+      links { "sfml-graphics", "sfml-audio", "sfml-system", "sfml-window", "fribidi", "tag" }
       libdirs { "/usr/lib", "/usr/local/lib" }
     end
diff --git a/src/Shaders/postFX.cpp b/src/Shaders/postFX.cpp
index 987f411..f767a47 100644
--- a/src/Shaders/postFX.cpp
+++ b/src/Shaders/postFX.cpp
@@ -78,7 +78,7 @@ namespace postFX {
             postFX_.loadFromFile(settings::C_dataPath + "shaders/bump.frag", sf::Shader::Fragment);
             bumpMap_.create(SPACE_X_RESOLUTION*0.5f, SPACE_Y_RESOLUTION*0.5f);<tr><td><span title='2013-07-01 23:28:21 +0200'>2013-07-01</span></td><td><a href='/guix/commit/tests/base32.scm?id=72626a71a96b02fccb2281713c1fdcd09aa194c4'>Move `sha256' to (guix hash).</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
          glMatrixMode(GL_MODELVIEW);
             postFX_.setParameter("BumpMap", bumpMap_.getTexture());
diff --git a/src/System/window.cpp b/src/System/window.cpp
index e9a099a..8e12dcc 100644
--- a/src/System/window.cpp
+++ b/src/System/window.cpp
@@ -222,7 +222,7 @@ namespace window {
         glLoadIdentity();
 
         // Setup translation (according to left-upper corner)
-        gluOrtho2D(0.f, SPACE_X_RESOLUTION, SPACE_Y_RESOLUTION, 0.f);
+        glOrtho(0.f, SPACE_X_RESOLUTION, SPACE_Y_RESOLUTION, 0.f, -1, 1);
 
         // probably improves performance...
         glDisable(GL_LIGHTING);
@@ -247,7 +247,7 @@ namespace window {
 
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
-        gluOrtho2D(0.f, viewPort_.x_, viewPort_.y_, 0.f);
+        glOrtho(0.f, viewPort_.x_, viewPort_.y_, 0.f, -1, 1);
         glMatrixMode(GL_MODELVIEW);
         glLoadIdentity();
 
@@ -255,7 +255,7 @@ namespace window {
 
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
-        gluOrtho2D(0.f, SPACE_X_RESOLUTION, SPACE_Y_RESOLUTION, 0.f);
+        glOrtho(0.f, SPACE_X_RESOLUTION, SPACE_Y_RESOLUTION, 0.f, -1, 1);
         glMatrixMode(GL_MODELVIEW);
         glLoadIdentity();
     }
@@ -270,7 +270,7 @@ namespace window {
             glLoadIdentity();
             setViewPort();
 
-            gluOrtho2D(0.f, viewPort_.x_, viewPort_.y_, 0.f);
+            glOrtho(0.f, viewPort_.x_, viewPort_.y_, 0.f, -1, 1);
 
             glMatrixMode(GL_MODELVIEW);
             glLoadIdentity();
@@ -284,7 +284,7 @@ namespace window {
             glLoadIdentity();
             setViewPort();
 
-            gluOrtho2D(0.f, viewPort_.x_, viewPort_.y_, 0.f);
+            glOrtho(0.f, viewPort_.x_, viewPort_.y_, 0.f, -1, 1);
 
             glMatrixMode(GL_MODELVIEW);
             glLoadIdentity();
@@ -294,7 +294,7 @@ namespace window {
         else {
             glMatrixMode(GL_PROJECTION);
             glLoadIdentity();
-            gluOrtho2D(0.f, viewPort_.x_, viewPort_.y_, 0.f);
+            glOrtho(0.f, viewPort_.x_, viewPort_.y_, 0.f, -1, 1);
             glMatrixMode(GL_MODELVIEW);
             glLoadIdentity();
         }

From a97d0d6a19b5b43e3c53081e36f1f1747b6674e6 Mon Sep 17 00:00:00 2001
From: Sylvain BOILARD <boilard@crans.org>
Date: Wed, 23 Jan 2013 02:02:47 +0100
Subject: [PATCH] Use sf::Shader::Bind() correctly after latest update of the
 SFML's API.

---
 src/System/window.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/System/window.cpp b/src/System/window.cpp
index e9a099a..3ffcf65 100644
--- a/src/System/window.cpp
+++ b/src/System/window.cpp
@@ -307,13 +307,11 @@ namespace window {
         window_.setActive(true);
         glEnable(GL_TEXTURE_2D);
 
-        if (shader)
-            shader->bind();
+        sf::Shader::bind(shader);
 
         window_.draw(toBeDrawn, states);
 
-        if (shader)
-            shader->unbind();
+        sf::Shader::bind(NULL);
 
         window_.popGLStates();
         glPopMatrix();