diff -ru inkscape-20051109-0840/src/isnan.h inkscape_gcc/src/isnan.h
--- inkscape-20051109-0840/src/isnan.h	2005-11-09 08:40:16.000000000 -0800
+++ inkscape_gcc/src/isnan.h	2005-11-09 16:41:15.117038160 -0800
@@ -43,6 +43,8 @@
 
 #if defined(__isfinite)
 # define isFinite(_a) (__isfinite(_a))	/* MacOSX/Darwin definition < 10.4 */
+#elif defined(__sgi)
+# define isFinite(_a) (_isfinite(_a))
 #elif defined(isfinite)
 # define isFinite(_a) (isfinite(_a))
 #else
diff -ru inkscape-20051109-0840/src/mod360.cpp inkscape_gcc/src/mod360.cpp
--- inkscape-20051109-0840/src/mod360.cpp	2005-11-09 08:40:16.000000000 -0800
+++ inkscape_gcc/src/mod360.cpp	2005-11-09 16:33:44.849909600 -0800
@@ -8,6 +8,7 @@
 double mod360(double const x)
 {
     double const m = fmod(x, 360.0);
+#define isnan(_a) (_isnan(_a))
     double const ret = ( isnan(m)
                          ? 0.0
                          : ( m < 0