Once I managed to succesfully compile APR for the c6x, compiling APR util was easy, as it uses the libtool from apr.

 I call the following command to configure, make and install apr util:

ac_cv_file__dev_zero=yes ac_cv_func_setpgrp_void=yes apr_cv_process_shared_works=yes apr_cv_mutex_robust_shared=yes apr_cv_tcp_nodelay_with_cork=yes ac_cv_sizeof_struct_iovec=8 apr_cv_mutex_recursive=yes ./configure --enable-static --host=c6x --prefix=$(pwd)/output CPP=c6x-uclinux-cpp CC=c6x-uclinux-gcc AR=c6x-uclinux-ar ARFLAGS=rv --disable-ipv6 OBJDUMP=c6x-uclinux-objdump build_libtool_libs=yes AS=c6x-uclinux-as NM=c6x-uclinux-nm deplibs_check_method="pass_all" STRIP=c6x-uclinux-strip RANLIB=c6x-uclinux-ranlib CFLAGS=" -pipe -Os " --with-apr=~/c6x/apr-1.4.6/output/bin/apr-1-config

make && make install