GCC 12's Shiny New C++ Features - More Of C++23 Implemented

[phoronix]

Phoronix: GCC 12's Shiny New C++ Features - More Of C++23 Implemented

With GCC 12.1 due for release in roughly the next week or so, Red Hat's Marek Polacek penned a new blog post this week outlining many of the C++ language improvements to be found in this major GNU Compiler Collection update...

https://www.phoronix.com/scan.php?pa...2-CPP-Features

[direc85]

No wonder I couldn't use #elifdef in a project, it's not in C++17...

[ms178]

Be aware that since Friday the build is broken, you need a patch from the linked Bugzilla entry to make it work again: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105432 [update: the patch was just merged to trunk]

[Azpegath]

I thought that support for using Mold is also a part of GCC 12. That is a great addition.

[acobar]

I thought that support for using Mold is also a part of GCC 12. That is a great addition.

You can use mold with gcc11, but you have to trick gcc to do it.

Create a directory on some node you have write rights and trick gcc to use it:
export somenode=<something>
mkdir -p ${somenode}/tmp
ln -s /usr/bin/mold ${somenode}/tmp/ld
gcc -B/${somenode}/tmp ...

[FPScholten]

You can use mold with gcc11, but you have to trick gcc to do it.

Create a directory on some node you have write rights and trick gcc to use it:
export somenode=<something>
mkdir -p ${somenode}/tmp
ln -s /usr/bin/mold ${somenode}/tmp/ld
gcc -B/${somenode}/tmp ...

I prefer to use the method where you prefix your build command with mold -run that basically does this trick for you.

as simple as mold -run make -j $(nproc)
or mold -run ninja