Index: trunk/MagicSoft/Mars/Makefile.conf.osf5.1
===================================================================
--- trunk/MagicSoft/Mars/Makefile.conf.osf5.1	(revision 1579)
+++ trunk/MagicSoft/Mars/Makefile.conf.osf5.1	(revision 1579)
@@ -0,0 +1,39 @@
+##################################################################
+#
+# config.mk
+#
+# @file        config.mk
+# 
+##################################################################
+# @maintitle
+
+# @code
+
+#
+# compilers
+#
+
+CC       = cc
+CXX      = cxx
+F77      = f77
+AR       = ar -c -r
+
+#
+#  ----->>>   settings for compilation
+#
+
+OPTIM    = -O2 -ieee -arch host
+DEBUG    = -g3  -w0 -msg_display_tag -msg_disable castqualtyp,undpreid,unrfunprm,extrasemi,intconlosbit,nonfundec,partovrd,stoclsnotfirst,boolexprconst
+ARCHDEF  = -D__OSF__
+
+MARS_LIB = -Llib $(SUBDIRS/*/-l&)
+INCLUDES = -I. $(SUBDIRS/*/-I&)
+
+# uncomment this for quiet compilation
+
+.SILENT:
+
+# @endcode
+##EOF
+
+
Index: trunk/MagicSoft/Mars/mhist/MHMatrix.cc
===================================================================
--- trunk/MagicSoft/Mars/mhist/MHMatrix.cc	(revision 1578)
+++ trunk/MagicSoft/Mars/mhist/MHMatrix.cc	(revision 1579)
@@ -44,5 +44,7 @@
 /////////////////////////////////////////////////////////////////////////////
 #include "MHMatrix.h"
-#include <math.h> // for Alphas
+
+#include <math.h>   // abs for Alphas
+#include <stdlib.h> // abs for some Linux machines
 
 #include <fstream.h>