1d29f9081f
The JIT compiler was an interesting experiment, but ultimately the security & complexity cost of doing arbitrary code generation at runtime is far too high. In subsequent commits, the bytecode format will change drastically, and instead of rewriting the JIT to fit the new bytecode, this patch simply removes the JIT instead. Other engines, JavaScriptCore in particular, have already proven that it's possible to handle the vast majority of contemporary web content with an interpreter. They are currently ~5x faster than us on benchmarks when running without a JIT. We need to catch up to them before considering performance techniques with a heavy security cost. |
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gn build for SerenityOS and Ladybird
Warning! The GN build is experimental and best-effort. It might not work, and if you use it you're expected to feel comfortable to unbreak it if necessary. Serenity's official build system is CMake, if in doubt use that. If you add files, you're expected to update the CMake build but you don't need to update GN build files. Reviewers should not ask authors to update GN build files. Keeping the GN build files up-to-date is on the people who use the GN build.
GN is a metabuild system. It always creates ninja files, but it can create some IDE projects (MSVC, Xcode, ...) which then shell out to ninja for the actual build.
This is a good overview of GN.
For more information, motivation, philosophy, and inspriation, see the LLVM documentation on its GN build
Typical gn args
On macOS, the default args should work out of the box. For compiling Ladybird there won't be any tailoring needed if you have Qt6 installed via homebrew and the Xcode tools installed.
On Ubuntu, it's likely that the default cc and cxx will not be able to compile the project. For compiling Ladybird, a typical args.gn might look like the below:
args.gn
# Set build arguments here. See `gn help buildargs`.
# Chosen clang must be >= version 15.0.0
host_cc="clang"
host_cxx="clang++"
is_clang=true
use_lld=true
qt_install_headers="/usr/include/x86_64-linux-gnu/qt6/"
qt_install_lib="/usr/lib/x86_64-linux-gnu"
qt_install_libexec="/usr/lib/qt6/libexec/"
As with any gn project, gn args <build dir> --list is your best friend.