=== modified file 'configure.in'
--- configure.in	2010-05-28 14:15:11 +0000
+++ configure.in	2010-05-29 06:46:14 +0000
@@ -2611,26 +2611,12 @@
 fi
 dnl end rip
 
-  AC_CHECK_LIB(gnumalloc, main)
-  if test "$ac_cv_lib_gnumalloc_main" = "yes"; then
-		AC_MSG_NOTICE([Disabling extended malloc functions when using gnumalloc])
-		ac_cv_func_mallinfo=no
-		ac_cv_func_mallocblksize=no
-		ac_cv_func_mallopt=no
-  else
-		case "$host" in
-			*-sun-solaris*)
-			  AC_MSG_NOTICE([skipping libmalloc check for $host])
-				;;
-			i386-*-freebsd*)
-			  AC_MSG_NOTICE([skipping libmalloc check for $host])
-				;;
-			*)
-  
-				AC_CHECK_LIB(malloc, main)
-				;;
-		esac
-  fi
+dnl Search for a fast malloc implementation explicitly
+dnl If none of these are found rely on the libc default implementation
+saved_flags=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS -nostdlib"
+AC_SEARCH_LIBS([malloc],[tcmalloc jemalloc dlmalloc ptmalloc3 nedmalloc ptmalloc2 malloc])
+CXXFLAGS=$saved_flags
 
 AC_CHECK_LIB(regex, main, [REGEXLIB="-lregex"])
 case "$host_os" in
@@ -3747,7 +3733,7 @@
 
 dnl Need the debugging version of malloc if available
 XTRA_OBJS=''
-if test "$ac_cv_lib_malloc_main" = "yes" ; then
+if test "$ac_cv_search_malloc" = "-lmalloc" ; then
 	if test -r /usr/lib/debug/malloc.o ; then
 		XTRA_OBJS="$XTRA_OBJS /usr/lib/debug/malloc.o"
 	fi