Problems building demos/examples against installed headers

[joachim-reichel]

Issue Details

In 6.1 Beta, the cmake scripts for demos and examples seem to no longer work with installed headers (independently of the remainder of the source code tarball).

The Debian package libcgal-dev contains the installed headers plus cmake support scripts. The package libcgal-demo contains tarballs of the demo, examples and data subdirectories. In past releases, it was possible to extract these tarballs and build all demos/examples against the installed headers and cmake scripts.

This does no longer work. demo/CMakeLists.txt and examples/CMakeLists.txt lack a project() line to use them independently. Adding that and changing the directory argument on the last line to "." makes the cmake configure step working again. But the generated default target does not seem to depend on anything. Building each demo/example individually works, but there does not seem to be a simple way to build them all anymore.

Maybe I need to adapt the packaging to some changes, but I couldn't find anything relevant in the changelog.

Environment

• Operating system (Linux, 64 bits): Debian Sid
• CGAL version: 6.1 Beta

[afabri]

Thank you @joachim-reichel
@lrineau will have a look when he is back from vacation.

[sloriot]

@joachim-reichel what script are you running to generate the package?

[joachim-reichel]

The "script" is the packaging process for Debian, mostly this file here https://salsa.debian.org/reichel/cgal/-/blob/master/debian/rules?ref_type=heads . But I've created a repro script that's independent. Adjust the two variables at the top and run from the root directory of a tarball.

repro.sh.txt

[sloriot]

@joachim-reichel fixed for me with #8989

[joachim-reichel]

Works again, thanks!