The use of -Bsymbolic here is not required for a profile-guided build, but

provides noticeable performance improvements for Python applications.  This

should be an acceptable change as runtime interposition on the Python

interpreter library is generally undesirable.

--- Python-2.7.1/configure.in.orig	2011-11-07 10:05:49.959873160 -0800

+++ Python-2.7.1/configure.in	2011-11-07 10:05:38.932222244 -0800

@@ -1812,11 +1812,11 @@

 	IRIX*/6*) LDSHARED="ld ${SGI_ABI} -shared -all";;

 	SunOS/5*) 

 		if test "$GCC" = "yes" ; then

-			LDSHARED='$(CC) -shared'

-			LDCXXSHARED='$(CXX) -shared'

+			LDSHARED='$(CC) -shared -Wl,-Bsymbolic'

+			LDCXXSHARED='$(CXX) -shared -Wl,-Bsymbolic'

 		else

-			LDSHARED='$(CC) -G'

-			LDCXXSHARED='$(CXX) -G'

+			LDSHARED='$(CC) -G -Wl,-Bsymbolic'

+			LDCXXSHARED='$(CXX) -G -Wl,-Bsymbolic'

 		fi ;;

 	hp*|HP*)

 		if test "$GCC" = "yes" ; then

@@ -2008,7 +2008,7 @@

 		  *gcc*)

 		    if $CC -Xlinker --help 2>&1 | grep export-dynamic >/dev/null

 		    then

-			LINKFORSHARED="-Xlinker --export-dynamic"

+			LINKFORSHARED="-Xlinker --export-dynamic -Xlinker -Bsymbolic"

 		    fi;;

 		  esac;;

 	CYGWIN*)