Tried that as well, however, swig (brew installed) does not seem to like it:

    ==> make swig-pl
    cd . && /usr/bin/python build/generator/swig/external_runtime.py build.conf /usr/local/bin/swig perl
    /usr/local/bin/swig -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion/include -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion/bindings/swig -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion/bindings/swig/include -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion/bindings/swig/proxy -I/private/tmp/default-YZ6v/subversion-1.8.3/subversion/bindings/swig/proxy -isystem/usr/include/apr-1 -I/usr/include/apr-1  -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK  -perl -nopm -noproxy -o subversion/bindings/swig/perl/native/core.c ./subversion/bindings/swig/core.i
    swig error : Unrecognized option -isystem/usr/include/apr-1
    Use 'swig -help' for available options.