diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 6f6e752c9b..d5742faf74 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -8,6 +8,14 @@
    2008-12-31 13:59 UTC+0100 Foo Bar (foo.bar foobar.org)
 */
 
+2009-02-03 00:55 UTC+0100 Maurilio Longo (maurilio.longo@libero.it)
+  * include/hbdefs.h
+  * include/hbthread.h
+    * added HB_OS_SUNOS to be able to build under OpenSolaris 2008.11
+      using pthreads.
+  * source/common/hbprintf.c
+    * include ieeefp.h under OpenSolaris 2008.11
+
 2009-02-02 23:25 UTC+0100 Viktor Szakats (harbour.01 syenar hu)
   * contrib/hbct/keysec.prg
   * contrib/hbct/keytime.prg
diff --git a/harbour/include/hbdefs.h b/harbour/include/hbdefs.h
index dbf860da59..d349b7b5da 100644
--- a/harbour/include/hbdefs.h
+++ b/harbour/include/hbdefs.h
@@ -72,7 +72,7 @@
         ( defined( __STDC_VERSION__ ) && __STDC_VERSION__ >= 199901L ) || \
         ( defined( __DJGPP__ ) && \
           ( __DJGPP__ > 2 || ( __DJGPP__ == 2 && __DJGPP_MINOR__ >= 4 ) ) ) || \
-        defined( HB_OS_LINUX ) || defined( HB_OS_DARWIN ) ) )
+        defined( HB_OS_LINUX ) || defined( HB_OS_DARWIN ) || defined( HB_OS_SUNOS ) ) )
    #include <stdint.h>
    /* workaround for BCC 5.8 bug */
    #if ( defined( __BORLANDC__ ) && __BORLANDC__ >= 1410 )
diff --git a/harbour/include/hbthread.h b/harbour/include/hbthread.h
index 34edb9d271..4428a7a3c3 100644
--- a/harbour/include/hbthread.h
+++ b/harbour/include/hbthread.h
@@ -57,7 +57,7 @@
 #include "hbset.h"
 
 #if ( defined( HB_OS_LINUX ) && !defined( __WATCOMC__ ) ) || \
-    defined( HB_OS_DARWIN )
+    defined( HB_OS_DARWIN ) || defined( HB_OS_SUNOS )
 #  include <pthread.h>
 #  define HB_PTHREAD_API
 #elif defined( HB_OS_WIN_32 )
diff --git a/harbour/source/common/hbprintf.c b/harbour/source/common/hbprintf.c
index 463c68cce9..234e67002d 100644
--- a/harbour/source/common/hbprintf.c
+++ b/harbour/source/common/hbprintf.c
@@ -106,6 +106,8 @@ optimized.
 #  include <float.h>
 #elif defined(__DJGPP__)
    _LIB_VERSION_TYPE _LIB_VERSION = _XOPEN_;
+#elif defined( HB_OS_SUNOS )
+#  include <ieeefp.h>    // for finite()    
 #endif
 
 HB_EXTERN_BEGIN