"compiler" directory will set options to use the
selected compiler.  For `:compiler` local options are set, for `:compiler!`
global options.
							*current_compiler*
To support older Vim versions, the plugins always use "current_compiler" and
not "b:current_compiler".  What the command actually does is the following:

- Delete the "current_compiler" and "b:current_compiler" variables.
- Define the "CompilerSet" user command.  With "!" it does ":set", without "!"
  it does ":setlocal".
- Execute ":runtime! compiler/{name}.{vim,lua}".  The plugins are expected to
  set options with "CompilerSet" and set the "current_compiler" variable to the
  name of the compiler.
- Delete the "CompilerSet" user command.
- Set "b:current_compiler" to the value of "current_compiler".
- Without "!" the old value of "current_compiler" is restored.


For writing a compiler plugin, see |write-compiler-plugin|.

Use the |compiler-make| plugin to undo the effect of a compiler plugin.

CPPCHECK			*quickfix-cppcheck* *compiler-cppcheck*

Use g/b:`c_cppcheck_params` to set cppcheck parameters. The global
settings by default include

- `--verbose`: Enables verbose output.
- `--force`: Forces checking of all configurations.
- `--inline-suppr`: Allows inline suppressions.
- `--enable=...`: Enables specific checks like warnings, style, performance,
  portability, information, and missing includes.
- `-j`: Utilizes multiple processors if available, determined by the
  `getconf` command if available (requires omitting the unusedFunction check)

For C++ files (`filetype == 'cpp'`), the `--language=c++` option is added to
ensure Cppcheck treats the file as C++.

If compile_commands.json is present in the current directory, it is added as a
`--project` parameter to the command line. Otherwise, by default the
directories in &path are passed as include directories. These can be set by
g/b:`c_cppcheck_includes` as a list of `-I` flags. Tim Pope's vim-apathy
plug-in [0] can expand &path. To also append the folders in a git repo use >

  let &l:path = join(systemlist('git ls-tree -d --name-only -r HEAD'), ',')

[0] https://github.com/tpope/vim-apathy

DOTNET							*compiler-dotnet*

The .NET CLI compiler outputs both errors and warnings by default. The output
may be limited to include only errors, by setting the g:dotnet_errors_only
variable to |v:true|.

The associated project name is included in each error and warning. To suppress
the project name, set the g:dotnet_show_project_file variable to |v:false|.

Example: limit output to only display errors, and suppress the project name: >
	let dotnet_errors_only = v:true
	let dotnet_show_project_file = v:false
	compiler dotnet
<
GCC					*quickfix-gcc*	*compiler-gcc*

There's one variable you can set for the GCC compiler:

g:compiler_gcc_ignore_unmatched_lines
				Ignore lines that don't match any patterns
				defined for GCC.  Useful if output from
				commands run from make are generating false
				positives.

JAVAC							*compiler-javac*

Commonly used compiler options can be added to 'makeprg' by setting the
b/g:javac_makeprg_params variable.  For example: >

	let g:javac_makeprg_params = "-Xlint:all -encoding utf-8"

MAVEN							*compiler-maven*

Commonly used compiler options can be added to 'makeprg' by setting the
b/g:maven_makeprg_params variable.  For example: >

	let g:maven_makeprg_params = "-DskipTests -U -X"

SPOTBUGS						*compiler-spotbugs*

SpotBugs is a static analysis tool that can be used to find bugs in Java.
It scans the Java bytecode of all classes in the currently open buffer.
(Therefore, `:compiler! spotbugs` is not supported.)

Commonly used compiler options can be added to 'makeprg' by setting the
"b:" or "g:spotbugs_makeprg_params" variable.  For example: >vim

	let b:spotbugs_makeprg_params = "-longBugCodes -effort:max -low"

The global default is "-workHard -experimental".

By default, the class files are searched in the directory where the source
files are placed.  However, typical Java projects