coc-settings.json

{                                                                               
	"clangd.arguments": [
		"--query-driver=/usr/bin/clang++",
		"--background-index"
	],
	"languageserver": {                                                             
		"jedi": { 
			"command": "jedi-language-server", 
			"filetypes": [ 
				"python" 
			] 
		},
		"ccls": {                                                                     
			"command": "ccls",                                                          
			"filetypes": ["c", "cc", "cpp", "c++", "objc", "objcpp"],                   
			"rootPatterns": [".ccls", "compile_commands.json", ".git/", ".hg/"],        
			"initializationOptions": {                                                  
				"cache": {                                                              
					"directory": "/tmp/ccls"                                              
				},                                                                      
				"clang": {
					"resourceDir": "/Library/Developer/CommandLineTools/usr/lib/clang/11.0.0",
					"extraArgs": [
						"-isystem",
						"/Library/Developer/CommandLineTools/usr/include/c++/v1",
						"-I",
						"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/"        
					]
				}
			}                                                                         
		}                                                                             
	},                                                                             
	"clangd.path": "/Users/user/.config/coc/extensions/coc-clangd-data/install/12.0.0/clangd_12.0.0/bin/clangd"
}