diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e4bab9..434c690 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,15 @@ ENABLE_TESTING()
 SET(NV_CMAKE_DIR "${NV_SOURCE_DIR}/cmake")
 SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${NV_CMAKE_DIR}")
 
+OPTION(SQUISH_FULL_LIBRARY "Makes the whole squish library compiled, instead of just what's needed in NVTT. Please be aware that this build path is not officially maintained." OFF)
+MARK_AS_ADVANCED(SQUISH_FULL_LIBRARY)
+OPTION(INSTALL_SQUISH "Install the (internal) squish library alongside NVTT binaries." OFF)
+MARK_AS_ADVANCED(INSTALL_SQUISH)
+OPTION(INSTALL_BC6H "Install the (internal) BC6H library alongside NVTT binaries." OFF)
+MARK_AS_ADVANCED(INSTALL_BC6H)
+OPTION(INSTALL_BC7 "Install the (internal) BC7 library alongside NVTT binaries." OFF)
+MARK_AS_ADVANCED(INSTALL_BC7)
+
 # GCC check (needs -std:c++11 flag)
 #if(CMAKE_COMPILER_IS_GNUCC)
 #	ADD_DEFINITIONS("-std=c++11")
diff --git a/src/bc6h/CMakeLists.txt b/src/bc6h/CMakeLists.txt
index 5c01c6c..9682001 100644
--- a/src/bc6h/CMakeLists.txt
+++ b/src/bc6h/CMakeLists.txt
@@ -21,3 +21,10 @@ IF(NOT WIN32)
         SET_TARGET_PROPERTIES(bc6h PROPERTIES COMPILE_FLAGS -fPIC)
     ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 ENDIF(NOT WIN32)
+
+IF(INSTALL_BC6H)
+	INSTALL(TARGETS bc6h
+		RUNTIME DESTINATION bin
+		LIBRARY DESTINATION lib
+		ARCHIVE DESTINATION lib/static)
+ENDIF(INSTALL_BC6H)
diff --git a/src/bc7/CMakeLists.txt b/src/bc7/CMakeLists.txt
index 99df434..03b26ba 100644
--- a/src/bc7/CMakeLists.txt
+++ b/src/bc7/CMakeLists.txt
@@ -31,3 +31,10 @@ IF(NOT WIN32)
         SET_TARGET_PROPERTIES(bc7 PROPERTIES COMPILE_FLAGS -fPIC)
     ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 ENDIF(NOT WIN32)
+
+IF(INSTALL_BC7)
+	INSTALL(TARGETS bc7
+		RUNTIME DESTINATION bin
+		LIBRARY DESTINATION lib
+	    ARCHIVE DESTINATION lib/static)
+ENDIF(INSTALL_BC7)
diff --git a/src/nvimage/ImageIO.cpp b/src/nvimage/ImageIO.cpp
index 9e67b63..733ce05 100644
--- a/src/nvimage/ImageIO.cpp
+++ b/src/nvimage/ImageIO.cpp
@@ -19,6 +19,7 @@
 #include "nvcore/StrLib.h"
 #include "nvcore/StdStream.h"
 #include "nvcore/TextWriter.h"
+#include <cstdint>
 
 // Extern
 #if defined(NV_HAVE_FREEIMAGE)
diff --git a/src/nvtt/squish/CMakeLists.txt b/src/nvtt/squish/CMakeLists.txt
index 832013e..05e9a7c 100644
--- a/src/nvtt/squish/CMakeLists.txt
+++ b/src/nvtt/squish/CMakeLists.txt
@@ -20,6 +20,23 @@ SET(SQUISH_SRCS
 	simd_sse.h
 	simd_ve.h)
 
+# Additionnal squish source files which are not included in NVTT by default
+IF(SQUISH_FULL_LIBRARY)
+	SET(SQUISH_SRCS ${SQUISH_SRCS}
+		alpha.h
+		alpha.cpp
+		clusterfit.h
+		clusterfit.cpp
+		rangefit.h
+		rangefit.cpp
+		singlechannelfit.h
+		singlechannelfit.cpp
+		singlecolourfit.h
+		singlecolourfit.cpp
+		squish.cpp
+	)
+ENDIF(SQUISH_FULL_LIBRARY)
+
 ADD_LIBRARY(squish STATIC ${SQUISH_SRCS})
 
 IF(NOT WIN32)
@@ -33,3 +50,9 @@ IF(NOT WIN32)
     ENDIF(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
 ENDIF(NOT WIN32)
 
+IF(INSTALL_SQUISH)
+	INSTALL(TARGETS squish
+		RUNTIME DESTINATION bin
+		LIBRARY DESTINATION lib
+	    ARCHIVE DESTINATION lib/static)
+ENDIF(INSTALL_SQUISH)
diff --git a/src/nvtt/squish/alpha.cpp b/src/nvtt/squish/alpha.cpp
index 4242bb8..2d199a4 100644
--- a/src/nvtt/squish/alpha.cpp
+++ b/src/nvtt/squish/alpha.cpp
@@ -26,7 +26,7 @@
 #include "alpha.h"
 #include <algorithm>
 
-namespace squish {
+namespace nvsquish {
 
 static int FloatToInt( float a, int limit )
 {
@@ -323,4 +323,4 @@ void DecompressAlphaDxt5( u8* rgba, void const* block )
 		rgba[4*i + 3] = codes[indices[i]];
 }
 
-} // namespace squish
+} // namespace nvsquish
diff --git a/src/nvtt/squish/alpha.h b/src/nvtt/squish/alpha.h
index 2fb3baf..3b4ce02 100644
--- a/src/nvtt/squish/alpha.h
+++ b/src/nvtt/squish/alpha.h
@@ -28,7 +28,7 @@
 
 #include "squish.h"
 
-namespace squish {
+namespace nvsquish {
 
 void CompressAlphaDxt3( u8 const* rgba, void* block );
 void CompressAlphaDxt5( u8 const* rgba, void* block );
@@ -36,6 +36,6 @@ void CompressAlphaDxt5( u8 const* rgba, void* block );
 void DecompressAlphaDxt3( u8* rgba, void const* block );
 void DecompressAlphaDxt5( u8* rgba, void const* block );
 
-} // namespace squish
+} // namespace nvsquish
 
 #endif // ndef SQUISH_ALPHA_H
diff --git a/src/nvtt/squish/clusterfit.h b/src/nvtt/squish/clusterfit.h
index e115cd3..d4ee851 100644
--- a/src/nvtt/squish/clusterfit.h
+++ b/src/nvtt/squish/clusterfit.h
@@ -78,6 +78,6 @@ private:
 	int m_order[16];
 };
 
-} // namespace squish
+} // namespace nvsquish
 
 #endif // ndef SQUISH_CLUSTERFIT_H
diff --git a/src/nvtt/squish/colourblock.cpp b/src/nvtt/squish/colourblock.cpp
index 37e4b02..6bcb68c 100644
--- a/src/nvtt/squish/colourblock.cpp
+++ b/src/nvtt/squish/colourblock.cpp
@@ -53,7 +53,7 @@ static int FloatTo565( Vec3::Arg colour )
 	return ( r << 11 ) | ( g << 5 ) | b;
 }
 
-static void WriteColourBlock( int a, int b, u8* indices, void* block )
+void WriteColourBlock( int a, int b, u8* indices, void* block )
 {
 	// get the block as bytes
 	u8* bytes = ( u8* )block;
diff --git a/src/nvtt/squish/colourblock.h b/src/nvtt/squish/colourblock.h
index bb0c3b0..8ab0ace 100644
--- a/src/nvtt/squish/colourblock.h
+++ b/src/nvtt/squish/colourblock.h
@@ -31,6 +31,7 @@
 
 namespace nvsquish {
 
+void WriteColourBlock(int a, int b, u8* indices, void* block);
 void WriteColourBlock3( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block );
 void WriteColourBlock4( Vec3::Arg start, Vec3::Arg end, u8 const* indices, void* block );
 //void WriteColourBlock3( Vec3::Arg start, Vec3::Arg end, uint indices, void* block );
diff --git a/src/nvtt/squish/rangefit.cpp b/src/nvtt/squish/rangefit.cpp
index 93c0a69..cda6e44 100644
--- a/src/nvtt/squish/rangefit.cpp
+++ b/src/nvtt/squish/rangefit.cpp
@@ -28,11 +28,12 @@
 #include "colourblock.h"
 #include <cfloat>
 
-namespace squish {
+namespace nvsquish {
 
-RangeFit::RangeFit( ColourSet const* colours, int flags ) 
-  : ColourFit( colours, flags )
+RangeFit::RangeFit( ColourSet const* colours, int flags )
 {
+	SetColourSet(colours, flags);
+
 	// initialise the metric
 	bool perceptual = ( ( m_flags & kColourMetricPerceptual ) != 0 );
 	if( perceptual )
@@ -49,7 +50,7 @@ RangeFit::RangeFit( ColourSet const* colours, int flags )
 	float const* weights = m_colours->GetWeights();
 	
 	// get the covariance matrix
-	Sym3x3 covariance = ComputeWeightedCovariance( count, values, weights );
+	Sym3x3 covariance = ComputeWeightedCovariance( count, values, weights, Vec3(1,1,1) );
 	
 	// compute the principle component
 	Vec3 principle = ComputePrincipleComponent( covariance );
@@ -199,4 +200,4 @@ void RangeFit::Compress4( void* block )
 	}
 }
 
-} // namespace squish
+} // namespace nvsquish
diff --git a/src/nvtt/squish/rangefit.h b/src/nvtt/squish/rangefit.h
index 7952019..6756b64 100644
--- a/src/nvtt/squish/rangefit.h
+++ b/src/nvtt/squish/rangefit.h
@@ -30,7 +30,7 @@
 #include "colourfit.h"
 #include "maths.h"
 
-namespace squish {
+namespace nvsquish {
 
 class ColourSet;
 
@@ -49,6 +49,6 @@ private:
 	float m_besterror;
 };
 
-} // squish
+} // namespace nvsquish
 
 #endif // ndef SQUISH_RANGEFIT_H
diff --git a/src/nvtt/squish/singlechannelfit.cpp b/src/nvtt/squish/singlechannelfit.cpp
index 2abc9a2..de88ac7 100644
--- a/src/nvtt/squish/singlechannelfit.cpp
+++ b/src/nvtt/squish/singlechannelfit.cpp
@@ -29,11 +29,12 @@
 #include "colourblock.h"
 #include <cfloat>
 
-namespace squish {
+namespace nvsquish {
 
-SingleChannelFit::SingleChannelFit( ColourSet const* colours, int const flags ) 
-  : ColourFit( colours, flags )
+SingleChannelFit::SingleChannelFit( ColourSet const* colours, int const flags )
 {
+	SetColourSet(colours, flags);
+
 	// cache some values
 	int const count = m_colours->GetCount();
 	Vec3 const* values = m_colours->GetPoints();
@@ -42,7 +43,7 @@ SingleChannelFit::SingleChannelFit( ColourSet const* colours, int const flags )
 	m_g_min = 63;
 	m_g_max = 0;
 	
-	for(uint i = 0; i < count; i++) {
+	for(int i = 0; i < count; i++) {
 		
 		int grey = int(values[i].Y() * 255.0f);	// @@ rounding?
 		grey = std::min(grey, 255);	// clamp to [0, 1)
@@ -141,4 +142,4 @@ void SingleChannelFit::Compress4( void* block )
 }
 
 
-} // namespace squish
+} // namespace nvsquish
diff --git a/src/nvtt/squish/singlechannelfit.h b/src/nvtt/squish/singlechannelfit.h
index 40de0a2..357ae8c 100644
--- a/src/nvtt/squish/singlechannelfit.h
+++ b/src/nvtt/squish/singlechannelfit.h
@@ -31,7 +31,7 @@
 #include "maths.h"
 #include "colourfit.h"
 
-namespace squish {
+namespace nvsquish {
 
 class SingleChannelFit : public ColourFit
 {
@@ -48,6 +48,6 @@ private:
 	int m_g_max;
 };
 
-} // namespace squish
+} // namespace nvsquish
 
 #endif // ndef SQUISH_SINGLECHANNELFIT_H
diff --git a/src/nvtt/squish/singlecolourfit.cpp b/src/nvtt/squish/singlecolourfit.cpp
index 4e1bb9c..3be544d 100644
--- a/src/nvtt/squish/singlecolourfit.cpp
+++ b/src/nvtt/squish/singlecolourfit.cpp
@@ -27,7 +27,7 @@
 #include "colourset.h"
 #include "colourblock.h"
 
-namespace squish {
+namespace nvsquish {
 
 struct SourceBlock
 {
@@ -59,8 +59,9 @@ static int FloatToInt( float a, int limit )
 }
 
 SingleColourFit::SingleColourFit( ColourSet const* colours, int flags )
-  : ColourFit( colours, flags )
 {
+	SetColourSet(colours, flags);
+
 	// grab the single colour
 	Vec3 const* values = m_colours->GetPoints();
 	m_colour[0] = ( u8 )FloatToInt( 255.0f*values->X(), 255 );
@@ -169,4 +170,4 @@ void SingleColourFit::ComputeEndPoints( int count, SingleColourLookup const* con
 	}
 }
 
-} // namespace squish
+} // namespace nvsquish
diff --git a/src/nvtt/squish/singlecolourfit.h b/src/nvtt/squish/singlecolourfit.h
index 3c4a1a3..eb75335 100644
--- a/src/nvtt/squish/singlecolourfit.h
+++ b/src/nvtt/squish/singlecolourfit.h
@@ -29,7 +29,7 @@
 #include <squish.h>
 #include "colourfit.h"
 
-namespace squish {
+namespace nvsquish {
 
 class ColourSet;
 struct SingleColourLookup;
@@ -53,6 +53,6 @@ private:
 	int m_besterror;
 };
 
-} // namespace squish
+} // namespace nvsquish
 
 #endif // ndef SQUISH_SINGLECOLOURFIT_H
diff --git a/src/nvtt/squish/squish.cpp b/src/nvtt/squish/squish.cpp
index 393ebf4..035d48a 100644
--- a/src/nvtt/squish/squish.cpp
+++ b/src/nvtt/squish/squish.cpp
@@ -32,7 +32,7 @@
 #include "alpha.h"
 #include "singlecolourfit.h"
 
-namespace squish {
+namespace nvsquish {
 
 static int FixFlags( int flags )
 {
@@ -85,7 +85,8 @@ void Compress( u8 const* rgba, void* block, int flags )
 	else
 	{
 		// default to a cluster fit
-		ClusterFit fit( &colours, flags );
+		ClusterFit fit;
+		fit.SetColourSet(&colours, flags);
 		fit.Compress( colourBlock );
 	}
 	
@@ -222,4 +223,4 @@ void DecompressImage( u8* rgba, int width, int height, void const* blocks, int f
 	}
 }
 
-} // namespace squish
+} // namespace nvsquish