[PATCH v6 0/4] Implement extents from the mdspan header.

[Luc Grosheintz]

This is the sixth interation and replaces:
https://gcc.gnu.org/pipermail/libstdc++/2025-April/061190.html

Changes since v5:
* Removed superfluous braces.
* Fixed std.cc.in
* Fixed Copyright statement.

Any layout related code has been removed from this patch
series.

Luc Grosheintz (4):
  libstdc++: Setup internal FTM for mdspan.
  libstdc++: Add header mdspan to the build-system.
  libstdc++: Implement std::extents [PR107761].
  libstdc++: Add tests for std::extents.

 libstdc++-v3/doc/doxygen/user.cfg.in          |   1 +
 libstdc++-v3/include/Makefile.am              |   1 +
 libstdc++-v3/include/Makefile.in              |   1 +
 libstdc++-v3/include/bits/version.def         |   9 +
 libstdc++-v3/include/bits/version.h           |   9 +
 libstdc++-v3/include/precompiled/stdc++.h     |   1 +
 libstdc++-v3/include/std/mdspan               | 309 ++++++++++++++++++
 libstdc++-v3/src/c++23/std.cc.in              |   9 +-
 .../mdspan/extents/class_mandates_neg.cc      |   8 +
 .../23_containers/mdspan/extents/ctor_copy.cc |  82 +++++
 .../23_containers/mdspan/extents/ctor_ints.cc |  62 ++++
 .../mdspan/extents/ctor_shape.cc              | 160 +++++++++
 .../mdspan/extents/custom_integer.cc          |  87 +++++
 .../23_containers/mdspan/extents/misc.cc      | 224 +++++++++++++
 14 files changed, 962 insertions(+), 1 deletion(-)
 create mode 100644 libstdc++-v3/include/std/mdspan
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/class_mandates_neg.cc
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/ctor_copy.cc
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/ctor_ints.cc
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/ctor_shape.cc
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/custom_integer.cc
 create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/misc.cc

-- 
2.49.0