Log message:
devel/abseil: Use _SYS_EXEC_ELF_H_ to detect ELF header v2 for NetBSD

Log message:
devel/abseil: Fix build under NetBSD/amd64 11.99.4

Log message:
abseil: updated to 20250814.1
20250814.1
Bug fixes

Log message:
abseil: add upstream gcc 8 std::underlying_type build fix
Hopefully fixes build on NetBSD 9

Log message:
*: recursive bump for abseil 20250814.0

Log message:
abseil: update to 20250814.0.
What's New:
    absl::Mutex now contains lower-case method names like lock() and \ 
shared_lock() to align with standard C++ mutex methods. This allows absl::Mutex \ 
to be used with std::scoped_lock and friends. The old names are still present \ 
but may be removed in a future release.
    The RAII Mutex-locker types like absl::MutexLock, absl::ReaderMutexLock, and \ 
friends now accept references to absl::Mutex. The pointer-accepting constructors \ 
are now deprecated, and may be removed in a future release.
Breaking Changes:
    Nullability template types, which were deprecated in the May 2025 release, \ 
have been removed.
    absl::string_view(nullptr), which is undefined behavior according to the C++ \ 
standard, now triggers an assert failure. Note that unless you changed \ 
absl/base/options.h, absl::string_view is an alias for std::string_view, so by \ 
default you will be inheriting the behavior of your standard library instead of \ 
using the Abseil implementation.
    Abseil's hash tables now require a hash function that has a return type with \ 
size >= sizeof(size_t).

Log message:
devel/abseil: Drop explicit GCC 7 requirement
because the package is marked as needing c++17, gcc documents that 7
is required for c++17, and gcc.mk requires 7 for c++17.

Log message:
abseil: the headers now need c++17, so require it in buildlink3.mk