Compile time fixes needed to build SimGear on recent cygwin versions.

simgear/math/SGQuat.hxx

@@ -18,6 +18,15 @@
 #ifndef SGQuat_H
 #define SGQuat_H
 
+#ifdef min
+#undef min
+#endif
+
+#ifdef max
+#undef max
+#endif
+
+
 /// 3D Vector Class
 template<typename T>
 class SGQuat {

simgear/scene/sky/cloud.cxx

@@ -56,6 +56,9 @@
 #  endif
 #endif
 
+#if defined (__CYGWIN__)
+#include <ieeefp.h>
+#endif
 
 static ssgSharedPtr<ssgStateSelector> layer_states[SGCloudLayer::SG_MAX_CLOUD_COVERAGES];
 static bool state_initialized = false;

simgear/scene/sky/cloudfield.cxx

@@ -54,6 +54,11 @@ SG_USING_STD(vector);
 #  endif
 #endif
 
+
+#if defined (__CYGWIN__)
+#include <ieeefp.h>
+#endif
+
 extern SGSky *thesky;
 
 static list_of_culledCloud inViewClouds;

simgear/sound/soundmgr_openal.cxx

@@ -63,6 +63,11 @@ extern "C" int isinf (double);
 #  endif
 #endif
 
+#if defined (__CYGWIN__)
+#include <ieeefp.h>
+#endif
+
+
 #include STL_IOSTREAM
 
 #include <simgear/debug/logstream.hxx>