phpexcel – Error when building PHP extension: The following arguments is invalid, and therefore ignored ( with-libxl )-ThrowExceptions

I tried to build php_excel for PHP7.3 on Windows. I did the configuration like this:

cd C:\php-sdk\php-dev\vc15\x64\php-7.3.15-src

nmake clean
buildconf --force
configure --disable-all --enable-cli --with-excel=shared --with-libxl-incdir=D:\Downloads\libxl-win-3.8.8.2\libxl-3.8.8.2\include_c --with-libxl-libdir=D:\Downloads\libxl-win-3.8.8.2\libxl-3.8.8.2\lib64

Unfortunately I get this warning:

WARNING
The following arguments is invalid, and therefore ignored:
 --with-libxl-incdir
 --with-libxl-libdir

What do I wrong?