Support non-vcpkg dependencies in source builds #41
Description
When building from source, the vcpkg compiled dependencies aren't packaged into the distribution:
For source builds, its probably reasonable to expect the C++ dependencies to be compiled and installed in the default location. i.e. /usr and for the build to depend on these, rather than the vcpkg compiled dependencies.
This would require modifying the cmake to search for the appropriate dependencies -- not sure how easy this would be with casacore.
Regardless, source builds are low priority as wheels package and link the compiled dependencies correctly -- this should be the preferred method of installation.