serafin:~ limi$ sudo port install subversion
--->  Building apr with target all
Error: Target com.apple.build returned: shell command "cd "/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_devel_apr/work/apr-1.2.7" && make all" returned error 2
Command output: /bin/sh /opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_devel_apr/work/apr-1.2.7/libtool --silent --mode=compile gcc -g -O2   -DHAVE_CONFIG_H -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK -no-cpp-precomp   -I./include -I/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_devel_apr/work/apr-1.2.7/include/arch/unix -I./include/arch/unix -I/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_devel_apr/work/apr-1.2.7/include  -o network_io/unix/sendrecv.lo -c network_io/unix/sendrecv.c && touch network_io/unix/sendrecv.lo
network_io/unix/sendrecv.c:954:2: error: #error APR has detected sendfile on your system, but nobody has written a
network_io/unix/sendrecv.c:955:2: error: #error version of it for APR yet. To get past this, either write
network_io/unix/sendrecv.c:956:2: error: #error apr_socket_sendfile or change APR_HAS_SENDFILE in apr.h to 0.
make[1]: *** [network_io/unix/sendrecv.lo] Error 1
make: *** [all-recursive] Error 1

Error: The following dependencies failed to build: apr apr-util db4 expat neon openssl zlib
Error: Status 1 encountered during processing.