Trying to install Pearl module Math CDF I have the following error after $make install

cd cdflib && make LIBPERL_A="libperl.a" LINKTYPE="dynamic" OPTIMIZE="-O2 -g" LD="x86_64-linux-gnu-gcc" PREFIX="/usr/local" PASTHRU_DEFINE=' ' PASTHRU_INC=' '
make[1]: Entering directory '/mnt/c/Users/Fabiana/Documents/Math-CDF-0.1/cdflib'
make[1]: Leaving directory '/mnt/c/Users/Fabiana/Documents/Math-CDF-0.1/cdflib'
make[1]: Entering directory '/mnt/c/Users/Fabiana/Documents/Math-CDF-0.1/cdflib'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/mnt/c/Users/Fabiana/Documents/Math-CDF-0.1/cdflib'
"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- CDF.bs blib/arch/auto/Math/CDF/CDF.bs 644
Manifying 1 pod document
Files found in blib/arch: installing files in blib/lib into architecture dependent library tree
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ERROR: Can't create '/usr/local/lib/x86_64-linux-gnu/perl/5.26.1/Math'
mkdir /usr/local/lib/x86_64-linux-gnu: Permission denied at /usr/share/perl/5.26/ExtUtils/Install.pm line 477.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 at -e line 1.
Makefile:802: recipe for target 'pure_site_install' failed
make: *** [pure_site_install] Error 13

Does anyone knows how to solve it??

Thanks!!

Fabiana