circumvent problem with realloc and MPI in HPUX 10.20

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@618 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

config.h.in

@@ -265,6 +265,8 @@
  #define HAVE_MPE 0
 #endif
 
+/* should we avoid realloc() in mpi.c? */
+#define MPI_AVOID_REALLOC 0
 
 /* Is fflush(NULL) clobbering input streams? */
 #undef BROKEN_FFLUSH_NULL

configure.in

@@ -478,6 +478,11 @@ case "$target_os" in
 	    INSTALL_DLLS="#"
           fi
         fi
+	#do not use realloc() from HP-UX 10.20 together with MPI
+	if test ${target_os} = hpux10.20
+	then
+	  AC_DEFINE(MPI_AVOID_REALLOC,1)
+	fi
 	;;
       *aix*)
 	# To actually use dlls in AIX I'd need to build YAP as a DLL first.