163 lines
7.4 KiB
Org Mode
163 lines
7.4 KiB
Org Mode
#+TITLE: C/C++ layer
|
|
|
|
[[file:img/ccpp.jpg]]
|
|
[[file:img/cmake.png]]
|
|
|
|
* Table of Contents :TOC_4_gh:noexport:
|
|
- [[#description][Description]]
|
|
- [[#features][Features:]]
|
|
- [[#install][Install]]
|
|
- [[#layer][Layer]]
|
|
- [[#default-mode-for-header-files][Default mode for header files]]
|
|
- [[#enable-clang-support][Enable Clang support]]
|
|
- [[#clang-format][clang-format]]
|
|
- [[#company-clang-and-flycheck][Company-clang and flycheck]]
|
|
- [[#cmake-configuration][CMake configuration]]
|
|
- [[#key-bindings][Key Bindings]]
|
|
- [[#debugger-realgud][Debugger (realgud)]]
|
|
|
|
* Description
|
|
This layer adds configuration for C/C++ language as well support for [[https://cmake.org/][CMake]]
|
|
scripts.
|
|
|
|
** Features:
|
|
- Support syntax checking via flycheck with Clang.
|
|
- Support for disassembly of code with [[https://github.com/jart/disaster][disaster]].
|
|
- Support code reformatting with [[http://clang.llvm.org/docs/ClangFormat.html][clang-format]].
|
|
- Display function or variable definition at the bottom. (when =semantic= layer
|
|
is included)
|
|
- Display current function cursor is in at the top. See [[https://github.com/tuhdo/semantic-stickyfunc-enhance][stickyfunc-demos]] for
|
|
demos in some programming languages. (when =semantic= layer is included)
|
|
- Support common refactoring with [[https://github.com/tuhdo/semantic-refactor][semantic-refactor]] . See [[https://github.com/tuhdo/semantic-refactor/blob/master/srefactor-demos/demos.org][srefactor-demos]] for
|
|
demonstration of refactoring features. (when =semantic= layer is included)
|
|
- Support code navigation via cscope (when =cscope= layer is included) and gtags.
|
|
- Support auto-completion (when =auto-completion= layer is included) via
|
|
company-clang (when =c-c++-enable-clang-support= is turned on), or
|
|
company-ycmd (when =ycmd= layer is included).
|
|
- Support for [[https://github.com/realgud/realgud][realgud]] debugger.
|
|
- Support for CMake configure/build (with limited support for other build systems),
|
|
automatic generation of =compile_commands.json= (compile flags), on-the-fly configuration
|
|
of flycheck, company-clang and RTags (if installed) with [[https://github.com/atilaneves/cmake-ide][cmake-ide]] .
|
|
|
|
* Install
|
|
** Layer
|
|
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
|
|
add =c-c++= to the existing =dotspacemacs-configuration-layers= list in this
|
|
file.
|
|
*Note:* [[https://github.com/tuhdo/semantic-refactor][semantic-refactor]] is only available for Emacs 24.4+
|
|
|
|
** Default mode for header files
|
|
By default header files are opened in =c-mode=, you can open them in =c++-mode=
|
|
by setting the variable =c-c++-default-mode-for-headers= to =c++-mode=.
|
|
|
|
#+BEGIN_SRC emacs-lisp
|
|
(setq-default dotspacemacs-configuration-layers
|
|
'((c-c++ :variables
|
|
c-c++-default-mode-for-headers 'c++-mode)))
|
|
#+END_SRC
|
|
*Note:* To set the variable for a given project, create a directory local
|
|
variable at the root of your project. More info on directory local variables
|
|
can be found in the [[http://www.gnu.org/software/emacs/manual/html_node/elisp/Directory-Local-Variables.html][dir-locals]].
|
|
|
|
** Enable Clang support
|
|
To enable Clang support set the layer variable =c-c++-enable-clang-support=
|
|
to =t= in the dotfile:
|
|
|
|
#+BEGIN_SRC emacs-lisp
|
|
(setq-default dotspacemacs-configuration-layers
|
|
'((c-c++ :variables c-c++-enable-clang-support t)))
|
|
#+END_SRC
|
|
|
|
*** clang-format
|
|
[[http://clang.llvm.org/docs/ClangFormat.html][clang-format]] allows reformatting either a selected region of code
|
|
(=clang-format-region=) or a whole buffer (=clang-format-buffer=) to make it
|
|
conform to a style defined in a =.clang-format= file. This file is either
|
|
located in the same directory as the file being edited, or in any of its parent
|
|
directories (otherwise a default style will be used).
|
|
|
|
You can add snippets similar to the following to bind clang-format to either a
|
|
particular mode or all modes in your =dotspacemacs/user-config= (within your
|
|
=~/.spacemacs=):
|
|
|
|
#+BEGIN_SRC emacs-lisp
|
|
;; Bind clang-format-region to C-M-tab in all modes:
|
|
(global-set-key [C-M-tab] 'clang-format-region)
|
|
;; Bind clang-format-buffer to tab on the c++-mode only:
|
|
(add-hook 'c++-mode-hook 'clang-format-bindings
|
|
(defun clang-format-bindings ()
|
|
(define-key c++-mode-map [tab] 'clang-format-buffer)))
|
|
#+END_SRC
|
|
|
|
To enable automatic buffer formatting on save, set the variable
|
|
=c-c++-enable-clang-format-on-save= to =t=:
|
|
|
|
#+BEGIN_SRC emacs-lisp
|
|
(setq-default dotspacemacs-configuration-layers '(
|
|
(c-c++ :variables c-c++-enable-clang-format-on-save t)))
|
|
#+END_SRC
|
|
|
|
*** Company-clang and flycheck
|
|
This layer adds some fancy improvements to =company-clang=. It includes a hook
|
|
to load a projects =.clang_complete= file, which is just a text file with one
|
|
clang flag per line, a format also used by other text editor clang plugins.
|
|
|
|
Not only does this allow proper autocomplete on projects with extra includes and
|
|
flags, but there is also support for flycheck so that it doesn't complain about
|
|
missing header files.
|
|
|
|
** CMake configuration
|
|
=cmake-ide= plugin works out of the box, but there are few useful configuration
|
|
options.
|
|
|
|
To configure project you need to create =.dir-locals.el= file. In case of using
|
|
make as CMake backend you can use =helm-make= to select required build target.
|
|
|
|
Here is a sample configuration. This configuration forces =cmake-ide= to use the
|
|
local directory and pass that directory to =helm-make=. Such config allows to
|
|
build your project with ~SPC c c~ key binding.
|
|
|
|
#+BEGIN_SRC emacs-lisp
|
|
((nil .
|
|
((cmake-ide-project-dir . "~/Project")
|
|
(cmake-ide-build-dir . "~/Project/build")
|
|
(cmake-ide-cmake-opts . "-DCMAKE_BUILD_TYPE=Debug")
|
|
(helm-make-build-dir . "build")
|
|
(helm-make-arguments . "-j7"))))
|
|
#+END_SRC
|
|
|
|
* Key Bindings
|
|
|
|
| Key Binding | Description |
|
|
|-------------+-------------------------------------------------------------------------|
|
|
| ~SPC m g a~ | open matching file |
|
|
| | (e.g. switch between .cpp and .h, requires a project to work) |
|
|
| ~SPC m g A~ | open matching file in another window |
|
|
| | (e.g. switch between .cpp and .h, requires a project to work) |
|
|
| ~SPC m D~ | disaster: disassemble c/c++ code |
|
|
| ~SPC m r~ | srefactor: refactor thing at point. |
|
|
| ~SPC m p c~ | Run CMake and set compiler flags for auto-completion and flycheck |
|
|
| ~SPC m p C~ | Run CMake if compilation database JSON file is not found |
|
|
| ~SPC m p d~ | Remove file connected to current buffer and kill buffer, then run CMake |
|
|
| ~SPC m c c~ | Compile project |
|
|
*Note:* [[https://github.com/tuhdo/semantic-refactor][semantic-refactor]] is only available for Emacs 24.4+.
|
|
|
|
** Debugger (realgud)
|
|
|
|
| Key Binding | Description |
|
|
|-------------+-----------------|
|
|
| ~SPC m d d~ | open cmd buffer |
|
|
| ~SPC m d e~ | eval variable |
|
|
| ~s~ | step over |
|
|
| ~i~ | step into |
|
|
| ~b~ | set break |
|
|
| ~B~ | unset break |
|
|
| ~o~ | step out |
|
|
| ~c~ | continue |
|
|
| ~e~ | eval variable |
|
|
| ~r~ | restart |
|
|
| ~q~ | quit debug |
|
|
| ~S~ | goto cmd buffer |
|