Build asio in FreeBSD 8 Failure

[yangacer]

Compiler messages:

Making all in include
Making all in src
depbase=`echo tests/performance/client.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`; g++ \
-DPACKAGE_NAME=\"asio\" -DPACKAGE_TARNAME=\"asio\" -DPACKAGE_VERSION=\"1.5.3\" \
-DPACKAGE_STRING=\"asio\ 1.5.3\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" \
-DPACKAGE=\"asio\" -DVERSION=\"1.5.3\" -D_REENTRANT=1 -DSTDC_HEADERS=1 \
-DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 \
-DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 \
-DHAVE_UNISTD_H=1 -I.    
-I/usr/local/include -I./../include -g -O2 -pthread -ftemplate-depth-256 \
-MT tests/performance/client.o -MD -MP -MF $depbase.Tpo \
-c -o tests/performance/client.o tests/performance/client.cpp && \
mv -f $depbase.Tpo $depbase.Po

tests/performance/client.cpp: In member function 'void session::start(asio::ip::basic_resolver_iterator)':
tests/performance/client.cpp:79: error: 'async_connect' is not a member of 'asio'
*** Error code 1