xref-find-references( s-l g r) - find references to the symbol at point.and s-l g g) - find definition(s) at point Lsp-mode has integration with xref core package and in addition it has lsp-execute-code-action ( s-l a a) - clangd is able to auto-correct some of the errors.lsp-rename ( s-l r r) - rename symbol/function at point.You may change the default prefix by setting Ships with which-key integration for better discoverability.īy default, lsp-mode's keybindings are available under s-l (Super-l), e. When a certain feature is supported by the server and when theĬorresponding Emacs package is installed. Lsp-mode has smart (almost) complete mnemonic keybindings which auto-enable Present, company-mode will be auto-configured and it will just work. Completion #īy default, lsp-mode uses company-mode as its completion frontend. Typically, this is the git repository root but since exceptions to this rule have caused us a lot of trouble in the past (monorepos come to mind), lsp-mode by default asks the user to manually confirm the project root the first time a project is opened. Note: the project root is needed by the language server in order to know where to Now, if everything was successful you will be asked to select a project root. "" ) t ) ( package-initialize ) ( setq package-selected-packages ' ( lsp-mode yasnippet lsp-treemacs helm-lsp projectile hydra flycheck company avy which-key helm-xref dap-mode )) ( when ( cl-find-if-not #' package-installed-p package-selected-packages ) ( package-refresh-contents ) ( mapc #' package-install package-selected-packages )) sample `helm' configuration use for details ( helm-mode ) ( require 'helm-xref ) ( define-key global-map #' helm-find-files ) ( define-key global-map #' helm-M-x ) ( define-key global-map #' helm-mini ) ( which-key-mode ) ( add-hook 'c-mode-hook 'lsp ) ( add-hook 'c++-mode-hook 'lsp ) ( setq gc-cons-threshold ( * 100 1024 1024 ) read-process-output-max ( * 1024 1024 ) treemacs-space-between-root-nodes nil company-idle-delay 0.0 company-minimum-prefix-length 1 lsp-idle-delay 0.1 ) clangd is fast ( with-eval-after-load 'lsp-mode ( add-hook 'lsp-mode-hook #' lsp-enable-which-key-integration ) ( require 'dap-cpptools ) ( yas-global-mode )) Feature overview #Īnd now it is time to start hacking on Emacs core! ( require 'package ) ( add-to-list 'package-archives ' ( "melpa". ![]() In your config or you could run in separate session. Please note that Emacs configuration frameworks such as Spacemacs or Doom Emacs often ship with lsp-mode settings of their own should you be using such a framework, and find that lsp-mode doesn't behave as intended, please make sure to follow this tutorial from a clean starting point. Here is a bare-bones lsp-mode/ dap-mode configuration template to get you started with your own lsp-mode config, or to try out in a separate one-off session. O0" CXXFLAGS="-ggdb3 -O0" LDFLAGS="-ggdb3" will compile Emacs with debug Prefixing make -j$(nproc) with bear will generate theĬompile_commands.json which later will be used by clangd. Sudo apt-get install -y build-essential git autoconf texinfo libgnutls28-dev libxml2-dev libncurses5-dev libjansson-devĬFLAGS = "-ggdb3 -O0" CXXFLAGS = "-ggdb3 -O0" LDFLAGS = "-ggdb3". In order to generate compile_commands.json for Emacs itself I have found You may read about them in clangd installation or in. You’ll probably get spurious errors about missing #include files, etc. Just a fact of life in C++, source files are not self-contained).īy default, clangd will assume your code is built as clang some_, and To understand your source code, clangd needs to know the compiler flags that are used to build the project. ![]() Note: for Debian based system use Project setup # In caseĬlangd is not present on the path clangd can be installed following their When it is installed on the host machine and it is present on the PATH. Pre-configured and it will be able to find the language server automatically For this guide we will be usingĬlangd but most of the steps here apply to ccls as well. ![]() Such script for installing a C/C++ language server due to their overallĬomplexity. Servers, lsp-mode ships with automatic installation scripts but there is no Production-ready language servers for C/C++ and Objective-C, Understands the specifics of your target language. Order for it to work, you have to install a separate language server that Lsp-mode is a client-server application with Emacs acting as the client. Document outline, breadcrumb and modeline widgetsįor all lsp-mode features, check here.Code navigation (references/definitions/implementations/symbol search).At the end of this tutorial, Emacs should provide you with all the language-aware editor features you'd expect from a modern C++ IDE, such as In this guide, I will show you how to configure lsp-mode and dap-mode for C/C++ development, using GNU Emacs as an example code base. A guide on disabling/enabling lsp-mode features
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