compiling GR 3.10.5.1 with ENABLE_GR_SOAPY=ON

[aardric]

I executed the following steps which I think are consistent with
documentation on the wiki.

(1) local installation of SoapySDR 0.7.2 appears to work.
(2) build and local install of gnuradio 3.10.5.1 works as expected with
-DENABLE_GR_SOAPY=OFF
(3) delete the gnuradio/build folder and run cmake with
-DENABLE_GR_SOAPY=ON configures without an obvious problem.
(4) however, make fails with:
include/gnuradio/soapy/soapy_types.h:15:10: fatal error:
SoapySDR/Types.hpp: No such file or directory
    15 | #include <SoapySDR/Types.hpp>

I'm hoping to get advice on whether the above procedure was reasonable
before I (as a non developer) attempts to reverse engineer and debug the
above process. I hesitate to raise an issue for something which may be
obvious or a problem with my particular installation.

Rick