c++-rtags Spacemacs layer

This layer augments C++ support provided by Spacemacs` c-c++ layer.

Features

• Adds rtags package for basic RTags support
• Adds company-rtags package for RTags-powered completion
• Adds flycheck-rtags for checking C++ code with RTags
• Adds helm-rtags for Helm integration
• Ensures RTags daemon (rdm) is started via cmake-ide-maybe-start-rdm
• Enables completion (via company) and linting (via adding a checker to and replacing flycheck highligher) in C/C++ modes

Installation

Simply clone the repository into your emacs.d private directory:

git clone https://github.com/kzemek/cpp-rtags-layer ~/.emacs.d/private/c++-rtags

and enable the layer in ~/.spacemacs along with c-c++ (without clang support):

...
dotspacemacs-configuration-layers
'( ...
  c-c++
  c++-rtags
  ...
  )
...

If your c-c++ layer doesn't include cmake-ide support you may additionally need to fetch it from develop branch:

cd ~/.emacs.d && git fetch && git checkout origin/develop layers/+lang/c-c++/

Project setup

• Install rtags
  • on macOS this step is as simple as brew install rtags
• Set up .dir-locals.el
• Create compile_commands.json in your build directory
  • for CMake projects it's enough to add -DCMAKE_EXPORT_COMPILE_COMMANDS=ON to cmake invocation

Key bindings

Key Binding	Description
C <tab>	Forces showing completions on current point (company-complete)
, g g	Jumps to symbol definition (using RTags)
, g f	Apply Clang fixit
C-c r	Various rtags functions