Allow compilation on gcc/clang without -Wno-unknown-pragmas.

mathlib/3dnow.cpp

@@ -16,7 +16,7 @@
 // memdbgon must be the last include file in a .cpp file!!!
 #include "tier0/memdbgon.h"
 
-#if !defined(COMPILER_MSVC64) && !defined(LINUX)
+#if !defined(COMPILER_MSVC64) && !defined(POSIX)
 // Implement for 64-bit Windows if needed.
 // Clang hits "fatal error: error in backend:" and other errors when trying
 // to compile the inline assembly below. 3DNow support is highly unlikely to

mathlib/IceKey.cpp

@@ -6,7 +6,10 @@
 
 #include "mathlib/IceKey.H"
 #include "tier0/memdbgon.h"
+
+#ifdef _WIN32
 #pragma warning(disable: 4244)
+#endif
 
 
 	/* Structure of a single round subkey */

mathlib/color_conversion.cpp

@@ -106,8 +106,10 @@ ALIGN128 float	power2_n[256] = 			// 2**(index - 128) / 255
 // You can use this to double check the exponent table and assert that 
 // the precomputation is correct.
 #ifdef DBGFLAG_ASSERT
+#ifdef _WIN32
 #pragma warning(push)
 #pragma warning( disable : 4189 ) // disable unused local variable warning
+#endif
 static void CheckExponentTable()
 {
 	for( int i = 0; i < 256; i++ )
@@ -120,8 +122,10 @@ static void CheckExponentTable()
 				power2_n[i] == testAgainst );
 	}
 }
+#ifdef _WIN32
 #pragma warning(pop)
 #endif
+#endif
 
 void BuildGammaTable( float gamma, float texGamma, float brightness, int overbright )
 {

mathlib/mathlib_base.cpp

@@ -16,8 +16,10 @@
 #include "tier0/vprof.h"
 //#define _VPROF_MATHLIB
 
+#ifdef _WIN32
 #pragma warning(disable:4244)   // "conversion from 'const int' to 'float', possible loss of data"
 #pragma warning(disable:4730)	// "mixing _m64 and floating point expressions may result in incorrect code"
+#endif
 
 #include "mathlib/mathlib.h"
 #include "mathlib/vector.h"

mathlib/vmatrix.cpp

@@ -18,7 +18,9 @@
 // memdbgon must be the last include file in a .cpp file!!!
 #include "tier0/memdbgon.h"
 
+#ifdef _WIN32
 #pragma warning (disable : 4700) // local variable 'x' used without having been initialized
+#endif
 
 // ------------------------------------------------------------------------------------------- //
 // Helper functions.