Lack of mdspan header in clang

[rock-jiao]

I need to use header for std::mdspan, but I don’t find this header file . How can do this?

this is my clang version here:

I tried the following:

sudo tee /etc/yum.repos.d/llvm.repo << EOF
[llvm]
name=LLVM for Fedora \$releasever
baseurl=https://apt.llvm.org/fedora/\$releasever/llvm/\$basearch/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://apt.llvm.org/llvm-snapshot.gpg.key
EOF

sudo dnf install libc++-devel libc++abi-devel

It show the info:(the option “–skip-unavailable” doesn’t help either)

I tried the following too:
create the file named mdspan in '/usr/include/c++/15/'path, the contents is

gcc-mirror

I’m not sure if I should ask this, but if someone could help me or give me some advice, I would really appreciate it.

（If there’s anything to add, you can @ me.）

[barryascott]

I see its not in gcc either.I see its a C++23 feature.

Maybe this feature too new for the current compilers to ship support for it?
Did you search for info on what verion of clang or gcc added support?

[rock-jiao]

@barryascott

Did you search for info on what verion of clang or gcc added support?

Thanks for your replay, you reminded me!

C++23 library features

The information here:

[rock-jiao]

This website is for checking which features are supported by a compiler
:https://cppstat.dev/
from C++ Weekly With Jason Turner:11:17