diff --git a/src/gallium/include/pipe/p_config.h b/src/gallium/include/pipe/p_config.h
index b3a7b337bc6..7cd42c6f71c 100644
--- a/src/gallium/include/pipe/p_config.h
+++ b/src/gallium/include/pipe/p_config.h
@@ -129,6 +129,15 @@
 # define PIPE_ARCH_BIG_ENDIAN
 #endif
 
+#elif defined(__sun)
+#include <sys/isa_defs.h>
+
+#if defined(_LITTLE_ENDIAN)
+# define PIPE_ARCH_LITTLE_ENDIAN
+#elif defined(_BIG_ENDIAN)
+# define PIPE_ARCH_BIG_ENDIAN
+#endif
+
 #else
 
 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)