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commit256c9aa1621b5cd9deeb82b1fcd9f619cbaa02d5[log] [download]
authorRabsRincon <rubrinbla@gmail.com>Thu Mar 08 00:52:59 2018 +0100
committerRabsRincon <rubrinbla@gmail.com>Thu Mar 08 00:54:02 2018 +0100
tree530bd1651fd231af39e7d7de93fc89dc6df20517
parent7fc071e671e3a9f86acc3d0a9fa6759f46222411 [diff]
Disable compiler options field spellcheck
1 file changed
tree: 530bd1651fd231af39e7d7de93fc89dc6df20517
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README.md

Build Status codecov

Compiler Explorer

Compiler Explorer

Compiler Explorer is an interactive compiler. The left-hand pane shows editable C, C++, Rust, Go, D, Haskell, Swift and Pascal code. The right, the assembly output of having compiled the code with a given compiler and settings. Multiple compilers are supported, and the UI layout is configurable (the Golden Layout library is used for this). There is also an ispc compiler for a C variant with extensions for SPMD.

Try out at godbolt.org

You can support this project on Patreon.

Contact us

For general discussion, feel free to join the mailing list: https://groups.google.com/forum/#!forum/compiler-explorer-discussion or the cpplang slack https://cpplang.now.sh/ channel #compiler_explorer.

If you are interested in developing, or want to see the discussions between existing developers, feel free to join the mailing list at https://groups.google.com/forum/#!forum/compiler-explorer-development or the cpplang slack https://cpplang.now.sh/ channel #ce_implementation.

Developing or running a local instance

Compiler Explorer is written in node.js.

Assuming you have a compatible version of node installed, simply running make ought to get you up and running with an Explorer running on port 10240 on your local machine: http://localhost:10240/. Currently Compiler Explorer requires node v8 installed, either on the path or at NODE_PATH (an environment variable or make parameter).

Running with make EXTRA_ARGS='--language LANG' will allow you to load LANG exclusively, where LANG is one for the language ids/aliases defined in lib/languages.js The Makefile will automatically install all the third party libraries needed to run; using yarn to install server-side and client side components

If you want to point it at your own GCC or similar binaries, either edit the etc/config/compiler-explorer.defaults.properties or else make a new one with the name compiler-explorer.local.properties. *.local.properties files have the highest priority when loading properties.

The config system leaves a lot to be desired, I'm working on porting CCS to javascript and then something more rational can be used.

Feel free to raise an issue on github or email me directly for more help.

There's now a Road map that gives a little insight into future plans for Compiler Explorer.

RESTful API

There‘s a simple restful API that can be used to do compiles to asm and to list compilers. In general all handlers live in /api/* endpoints, and will accept JSON or text in POSTs, and will return text responses or JSON responses depending on the request’s Accept header.

At a later date there may be some form of rate-limiting: currently requests will be queued and dealt with exactly like interactive requests on the main site. Authentication might be required at some point in the future (for the main Compiler Explorer site anyway).

The following endpoints are defined:

GET /api/languages - return a list of languages

Returns a list of the currently supported languages, as pairs of languages IDs and their names.

GET /api/compilers - return a list of compilers

Returns a list of compilers. In text form, there's a simple formatting of the ID of the compiler, its description and its language ID. In JSON, all the information is returned as an array of compilers, with the id key being the primary identifier of each compiler.

GET /api/compilers/<language-id> - return a list of compilers with matching language

Returns a list of compilers for the provided language id. In text form, there's a simple formatting of the ID of the compiler, its description and its language ID. In JSON, all the information is returned as an array of compilers, with the id key being the primary identifier of each compiler.

POST /api/compiler/<compiler-id>/compile - perform a compilation

To specify a compilation request as a JSON document, post it as the appropriate type and send an object of the form:

{
    "source": "Source to compile",
    "options": {
        "userArguments": "Compiler flags",
        "compilerOptions": {},
        "filters": {
            "filter": true
        }
    }
}

The filters are an JSON object with true/false. If not supplied, defaults are used. If supplied, the filters are used as-is. The compilerOptions is used to pass extra arguments to the back end, and is probably not useful for most REST users.

A text compilation request has the source as the body of the post, and uses query parameters to pass the options and filters. Filters are supplied as a comma-separated string. Use the query parameter filters=XX to set the filters directly, else addFilters=XX to add a filter to defaults, or removeFilters to remove from defaults. Compiler parameters should be passed as options=-O2 and default to empty.

Filters include binary, labels, intel, comments and directives and correspond to the UI buttons on the HTML version.

The text request is designed for simplicity for command-line clients like curl:

$ curl 'https://godbolt.org/api/compiler/g63/compile?options=-Wall' --data-binary 'int foo() { return 1; }'
# Compilation provided by Compiler Explorer at godbolt.org
foo():
        push    rbp
        mov     rbp, rsp
        mov     eax, 1
        pop     rbp
        ret

If JSON is present in the request's Accept header, the compilation results are of the form:

Optional values are marked with a ‘**’

{
  "code": 0 if successful, else compiler return code,
  "stdout": [
            {
              "text": Output,
              ** "tag": {
                          "line": Source line,
                          "text": Parsed error for that line
                 }
            },
            ...
  ],
  "stderr": (format is similar to that of stdout),
  "asm": [
         {
           "text": Assembly text,
           "source": {file: null for user input, else path, line: number} or null if none
         },
         ...
  ],
  "okToCache": true if output could be locally cached else false,
  ** "optOutput" : {
                     "displayString" : String displayed in output,
                     "Pass" : [ Missed | Passed | Analysis ] (Specifies the type of optimisation output),
                     "Name" : Name of the output (mostly represents the reason for the output),
                     "DebugLoc" : {
                        "File": Name of file,
                        "Line": Line number,
                        "Column": Column number in line
                     },
                     "Function": Name of function for which optimisation output is provided,
                     "Args": Array of objects representing the arguments that the optimiser used when trying to optimise
     }
}

Credits

Compiler Explorer is maintained by Matt Godbolt, Rubén Rincón and Simon Brand.