Add visibility feature for Sun Studio compilers.

This commit was SVN r20833.

config/ompi_check_visibility.m4

@@ -11,6 +11,7 @@
 # Copyright (c) 2004-2005 The Regents of the University of California.
 #                         All rights reserved.
 # Copyright (c) 2006-2007 Cisco Systems, Inc.  All rights reserved.
+# Copyright (c) 2009      Sun Microsystems, Inc.  All rights reserved.
 # $COPYRIGHT$
 # 
 # Additional copyrights may follow
@@ -24,7 +25,7 @@
 AC_DEFUN([OMPI_CHECK_VISIBILITY],[
     AC_REQUIRE([AC_PROG_GREP])
 
-    # Check if the compiler has support for visibility, like some versions of gcc, icc.
+    # Check if the compiler has support for visibility, like some versions of gcc, icc Sun Studio cc.
     AC_ARG_ENABLE(visibility, 
         AC_HELP_STRING([--enable-visibility],
             [enable visibility feature of certain compilers/linkers (default: enabled)]))
@@ -34,14 +35,16 @@ AC_DEFUN([OMPI_CHECK_VISIBILITY],[
         have_visibility=0
     else
         CFLAGS_orig="$CFLAGS"
-        CFLAGS="$CFLAGS_orig -fvisibility=hidden"
         add=
+
+        # check using gcc -fvisibility=hidden flag
+        CFLAGS="$CFLAGS_orig -fvisibility=hidden"
         AC_CACHE_CHECK([if $CC supports -fvisibility],
             [ompi_cv_cc_fvisibility],
             [AC_TRY_LINK([
                     #include <stdio.h>
                     __attribute__((visibility("default"))) int foo;
-                    void bar(void) { fprintf(stderr, "bar\n"); };
+                    void bar(void) { fprintf(stderr, "bar\n"); }
                     ],[],
                     [if test -s conftest.err ; then
                         $GREP -iq "visibility" conftest.err
@@ -55,6 +58,27 @@ AC_DEFUN([OMPI_CHECK_VISIBILITY],[
                      fi],
                     [ompi_cv_cc_fvisibility="no"])
                 ])
+        # Check using Sun Studio -xldscope=hidden flag
+        CFLAGS="$CFLAGS_orig -xldscope=hidden"
+        AC_CACHE_CHECK([if $CC supports -xldscope],
+            [ompi_cv_cc_xldscope],
+            [AC_TRY_LINK([
+                    #include <stdio.h>
+                    __attribute__((visibility("default"))) int foo;
+                    void bar(void) { fprintf(stderr, "bar\n"); }
+                    ],[],
+                    [if test -s conftest.err ; then
+                        $GREP -iq "visibility" conftest.err
+                        if test "$?" = "0" ; then
+                            ompi_cv_cc_xldscope="no"
+                        else
+                            ompi_cv_cc_xldscope="yes"
+                        fi
+                     else
+                        ompi_cv_cc_xldscope="yes"
+                     fi],
+                    [ompi_cv_cc_xldscope="no"])
+                ])
 
         if test "$ompi_cv_cc_fvisibility" = "yes" ; then
             add=" -fvisibility=hidden"
@@ -62,6 +86,12 @@ AC_DEFUN([OMPI_CHECK_VISIBILITY],[
             AC_MSG_CHECKING([enable symbol visibility])
             AC_MSG_RESULT([yes]) 
             AC_MSG_WARN([$add has been added to CFLAGS])
+        elif test "$ompi_cv_cc_xldscope" = "yes" ; then
+            add=" -xldscope=hidden"
+            have_visibility=1
+            AC_MSG_CHECKING([enable symbol visibility])
+            AC_MSG_RESULT([yes]) 
+            AC_MSG_WARN([$add has been added to CFLAGS])
         elif test "$enable_visibility" = "yes"; then
             AC_MSG_ERROR([Symbol visibility support requested but compiler does not seem to support it.  Aborting])
         else 

opal/mca/paffinity/base/base.h

@@ -242,7 +242,7 @@ OPAL_DECLSPEC int opal_paffinity_base_slot_list_set(long rank);
 /**
  * Debugging output stream
  */
-extern int opal_paffinity_base_output;
+OPAL_DECLSPEC extern int opal_paffinity_base_output;
 
 END_C_DECLS
 

opal/mca/paffinity/base/paffinity_base_open.c

@@ -40,7 +40,7 @@
 /*
  * Globals
  */
-int opal_paffinity_base_output = -1;
+OPAL_DECLSPEC int opal_paffinity_base_output = -1;
 bool opal_paffinity_base_components_opened_valid = false;
 opal_list_t opal_paffinity_base_components_opened;