subversion not detecting apr and apr-utils libraries

Hello,

I'm trying to install subversion 1.9.7 in Ubuntu 16.04 using its source
code. When I do ./configure ./configure --with-apr=/usr/lib/apache2
--with-apr-util=/usr/lib/apache2 , I get the following error:

configure: Configuring Subversion 1.9.7
configure: creating config.nice
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking if gcc accepts -std=c90... yes
checking if gcc accepts -w... yes
checking if gcc accepts -Werror=unknown-warning-option... no
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking if g++ accepts -std=c++98... yes
checking if g++ accepts -w... yes
checking if g++ accepts -Werror=unknown-warning-option... no
checking how to run the C preprocessor... gcc -E
checking for a sed that does not truncate output... /bin/sed
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking whether ln -s works... yes
checking for a BSD-compatible install... /usr/bin/install -c
configure: Apache Portable Runtime (APR) library configuration
checking for APR... configure: error: the --with-apr parameter is
incorrect. It must specify an install prefix, a build directory, or an
apr-config file.

I'am pretty sure those provided locations are right because I used the find
/ -name "apache2" command to obtain them. Please tell me what is wrong.

Kind Regards,

-- 
Guido