How do I fix "Failed to execute C/C++ compiler" error when building helix grammer?

Question

Problem:

When I run the hx -g build command to build the tree-sitter grammars Helix throws the following error:

Building 123 grammars
123 grammars failed to build

    Failure 0/123: Failed to execute C/C++ compiler
    Failure 1/123: Failed to execute C/C++ compiler
    Failure 2/123: Failed to execute C/C++ compiler
    ...
    ...
    Failure 122/123: Failed to execute C/C++ compiler
    Failure 123/123: Failed to execute C/C++ compiler

Running hx -g fetch succeeds with this message:

Fetching 123 grammars
123 up to date git grammars

System specification:

• Helix: 22.12 (96ff64a8)
• Clang: 16.0.0
• Clang++: 16.0.0
• PowerShell: 7.3.3
• Windows: 22H2

Expected result:

Tree-sitter grammars build successfully.

What I tried:

1. Found this wiki on troubleshooting this specific issue, but there is not enough information provided on which C/C++ compiler I need to install.
2. Tried using different compiler (gcc 11.2.0)

Answer 1

not sure if you already resolved this or not.

I got the same issue, and had to install both gcc and g++ on Debian Bookworm:

sudo apt install gcc g++

Answer 2

Installing Visual Studio build tools for C/C++ fixed it for me.