Replaces the `FetchContent` mechanism with a vendored copy of
`tl/expected.hpp` (v1.1.0).
The header is placed in `CGAL/tl/expected.hpp` to avoid namespace
pollution.
This also removes the CMake module `CGAL_setup_tl-excepted.cmake`.
## Release Management
* Affected package(s): Constrained_triangulation_3
* Issue(s) solved (if any): #9145
* License and copyright ownership: CC0 1.0 Universal (tl/expected.hpp)
## Summary of Changes
This PR fixes various typos across multiple packages. The changes
include:
* **Variable Names:** Corrected local variable names (e.g.,
`list_lenght` → `list_length`, `inital_nb_pts` → `initial_nb_pts`) in
CMake scripts and C++ headers.
* **Header Guards:** Fixed a typo in the header guard for
`Edge_length_cost.h` to match the filename.
* **Documentation & Comments:** Fixed spelling errors in comments,
string literals, and documentation files (e.g., `dimensionnal` →
`dimensional`, `explicitelty` → `explicitly`).
## Release Management
* Affected package(s): Installation, Point_set_3,
Polygon_mesh_processing, Surface_mesh_simplification, SMDS_3,
STL_Extension, Stream_support, TDS_2, Triangulation_2, Triangulation_3
* Issue(s) solved (if any):
* Feature/Small Feature (if any):
* Link to compiled documentation (obligatory for small feature):
* License and copyright ownership:
Replaces the FetchContent mechanism with a vendored copy of tl/expected.hpp (v1.1.0).
The header is placed in CGAL/tl/expected.hpp to avoid namespace pollution.
This also removes the CMake module CGAL_setup_tl-excepted.cmake.
## Release Management
* Affected package(s): Constrained_triangulation_3
* Issue(s) solved (if any): #9145
* License and copyright ownership: CC0 1.0 Universal (tl/expected.hpp)
## Summary of Changes
Changing the used cmake target for Ceres to Ceres::ceres.
## Release Management
* Affected package(s): Installation, Polygon_mesh_processing
## Summary of Changes
cosmetic improvements of CMake outputs
### set `FOLDER` for sub-directories of CGAL
In VS Code, the CMake project outline is much cleaner if CGAL is
configured with examples and demos:
<img width="416" height="574" alt="Screenshot_20250911_154221"
src="https://github.com/user-attachments/assets/f39f4ea5-317b-4f2d-ba75-e04691674c27"
/>
### set `CMAKE_MESSAGE_INDENT` to indent the outputs in sub-folders
The output messages from sub-directories are indented, now:
```
== Generating build files for examples ==
-- Configuring examples in examples/AABB_tree
-- Configuring examples in examples/Advancing_front_surface_reconstruction
-- Configuring examples in examples/Algebraic_foundations
-- Configuring examples in examples/Algebraic_kernel_d
NOTICE: This project requires the MPFI library and GMP support, and will not be compiled.
-- Configuring examples in examples/Alpha_shapes_2
-- Configuring examples in examples/Alpha_shapes_3
-- Configuring examples in examples/Alpha_wrap_3
-- Configuring examples in examples/Apollonius_graph_2
-- Configuring examples in examples/Arrangement_on_surface_2
-- Boost include dirs: /usr/include
-- Boost libraries:
-- Using gcc version 4 or later. Adding -frounding-math
-- Configuring examples in examples/BGL_LCC
-- Configuring examples in examples/BGL_OpenMesh
-- Configuring examples in examples/BGL_arrangement_2
-- Configuring examples in examples/BGL_graphcut
-- Configuring examples in examples/BGL_polyhedron_3
That will suppress the warnings about `CMP0167` (from CMake 3.30):
```
CMake Warning (dev) at cmake/modules/display-third-party-libs-versions.cmake:37 (find_package):
Policy CMP0167 is not set: The FindBoost module is removed. Run "cmake
--help-policy CMP0167" for policy details. Use the cmake_policy command to
set the policy and suppress this warning.
```
Sebastien Loriot