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List:       cmake
Subject:    [CMake] target_sources vs. PUBLIC_HEADER for libraries
From:       Michael Ellery <mellery451 () gmail ! com>
Date:       2019-10-11 19:33:17
Message-ID: 5384F831-F47E-4F36-A31D-938074ED5FB0 () gmail ! com
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I'd like to make sure I understand two different aspects of header files management \
for libraries:

(1) typically you can add header files to target_sources, but it's only helpful for \
IDEs..so that the IDE will show the header files in its sources list, correct?. In \
theory, cmake does not actually need header files explicitly specified for dependency \
tracking, although I guess listing them makes it explicit.

(2) setting the PUBLIC_HEADER property for a target then makes header files available \
for installation via the PUBLIC_HEADER destination. Is this the preferred way to \
install the library interface/public headers? How do you handle a header directory \
hierarchy — for example maybe you have detail and impl subdirectories if you are \
following boost/stdlib conventions.

I found Craig's article about target_sources very helpful \
(https://crascit.com/2016/01/31/enhanced-source-file-handling-with-target_sources/), \
but I don't think it addresses the PUBLIC_HEADER installation use case.

Thanks,
Mike Ellery
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