Visual Studio Code

Install extension

Install the ccls extension from the marketplace here. The source code is located at https://github.com/MaskRay/vscode-ccls.

If you run into issues, you can view debug output by running the (F1) View: Toggle Output command and opening the ccls output section.

Setting up the extension

To tell the extension where to find ccls, either add ccls to your PATH or set "ccls.launch.command" in User Settings to the absolute path pointing to ccls.

{
    "ccls.launch.command": "/path/to/ccls/Release/ccls",
    "ccls.cacheDirectory": "/tmp/.ccls-cache/"
}

ccls.index.extraClangArguments

If for whatever reason you cannot generate a compile_commands.json file, you can add the flags to the ccls.clang.extraArgs configuration option.

Semantic highlighting

The Visual Studio Code ccls extension supports semantic highlighting. To enable, put into settings.conf (or workspace configuration):

"ccls.highlighting.enabled.types": true,
"ccls.highlighting.enabled.freeStandingFunctions": true,
"ccls.highlighting.enabled.memberFunctions": true,
"ccls.highlighting.enabled.freeStandingVariables": true,
"ccls.highlighting.enabled.memberVariables": true,
"ccls.highlighting.enabled.namespaces": true,
"ccls.highlighting.enabled.macros": true,
"ccls.highlighting.enabled.enums": true,
"ccls.highlighting.enabled.typeAliases": true,
"ccls.highlighting.enabled.enumConstants": true,
"ccls.highlighting.enabled.staticMemberFunctions": true,
"ccls.highlighting.enabled.parameters": true,
"ccls.highlighting.enabled.templateParameters": true,
"ccls.highlighting.enabled.staticMemberVariables": true,
"ccls.highlighting.enabled.globalVariables": true,