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feat(deps): add FindBoost module with components

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Fetch the Boost CMake release archive (default 1.92.0) and build only
the libraries requested via find_package(Boost COMPONENTS ...), plus
their dependencies. Each component is exposed as Boost::<name>, e.g.
Boost::serialization. cmat now uses this module instead of a system
Boost install, so the Boost exercises are always available.

Also fix SolutionEx62Bonus: Employee.h used base_object without
including <boost/serialization/base_object.hpp>. This was not an
intentional exercise bug; it likely relied on a transitive include
in older Boost versions.

Co-authored-by: Claude Opus 5.5 <claude.opus5.5@anthropic.com>
This commit is contained in:
portersky
2026-10-06 08:11:54 +02:00
co-authored by Claude Opus 5.5
parent 38473eb734
commit c681ebab2b
4 changed files with 94 additions and 5 deletions
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cmat/CMakeLists.txt
+2 -4
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@@ -56,10 +56,8 @@ else()
# Windows-specific; there is nothing portable to build with.
endif()
# Exercises using Boost.Serialization (system install; not fetched). CONFIG
# mode uses Boost's own CMake package, since the FindBoost module was removed
# in CMake 4.
find_package(Boost CONFIG QUIET COMPONENTS serialization)
# Exercises using Boost.Serialization (fetched via deps/FindBoost.cmake).
find_package(Boost QUIET COMPONENTS serialization)
# ------------------------------------------------------------------------------
# Target helpers