This page describes how to build V8 for execution on the built-in RISC-V simulator. It is assumed that you have already followed the steps to get the source.

• Install prerequisites

• Build v8 for RISC-V Simulation of an x86-64 Host

  • Configure with GN

  • Build with Ninja

• Build v8 Release Simulated Build

  • Build with gm.py

Table of contents generated with markdown-toc

Install prerequisites

The following script will use apt to install any packages required for building v8. You will need sudo access to install the packages.

cd $V8_ROOT/v8
./build/install-build-deps.sh

Build v8 for RISC-V Simulation on an x86-64 Host in Debug Mode

Build with gm.py

The following command builds a debug build for an x86-64 executable for v8 which generates RISC-V code and executes it within a builtin RISC-V simulator.

tools/dev/gm.py riscv64.debug.all

The generated files can be found in out/riscv64.debug/.

If you plan to use gdb to debug v8, it will be useful to add the flag v8_optimized_debug=false to the arguments in out/riscv64.debug/args.gn. Without this, the code is optimized by default and will be difficult to debug.

Build Release Mode

Build with gm.py

To compile the release build (note: this only builds d8 but none of the test binaries):

tools/dev/gm.py riscv64.release

The generated files can be found in out/riscv64.release/.

Next, continue to Run Tests