math/openmesh/files/patch-src_OpenMesh_Apps_Decimating_decimaterviewer.cc


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--- src/OpenMesh/Apps/Decimating/decimaterviewer.cc.orig	2018-10-21 23:51:30 UTC
+++ src/OpenMesh/Apps/Decimating/decimaterviewer.cc
@@ -63,6 +63,9 @@
 #else
 #include <GL/glut.h>
 #endif
+#if defined(__FreeBSD__)
+#include <unistd.h>
+#endif
 
 void usage_and_exit(int xcode);