The LLVM-based D compiler.
D C++ C CMake Makefile Shell
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bash_completion.d Use bash completion dir from config if available Feb 19, 2015
cmake/Modules CMake: add version check to findLLVM (#1940) Dec 22, 2016
ddmd Fix alignment and size of target critical section (#1956) Jan 13, 2017
driver cache: Delete all temporary files during cache pruning. Jan 8, 2017
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runtime update phobos Jan 13, 2017
tests Fix codegen/asm_output test for RPi 1 (armv6) (#1972) Jan 19, 2017
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vcbuild Windows: Detect Visual C++ Build Tools automatically Aug 16, 2016
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.clang-tidy clang-tidy: Add readability-else-after-return Nov 2, 2015
.editorconfig Add a .editorconfig file for dfmt. The settings are the same as DMD's… Mar 4, 2016
.gitattributes set proper attributes for Windows Jul 1, 2014
.gitmodules Imported D2 testsuite (v2.060) as submodule. Sep 7, 2012
.travis.yml Travis and AppVeyor: Upgrade to LLVM 3.9.1 Jan 2, 2017
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LICENSE Relicense profile-rt/d/ldc/profile.d (sole author Johan Engelen). Oct 6, 2016 README: Fix Homebrew spelling, remove "Distribution" header Jan 13, 2017
appveyor.yml Travis and AppVeyor: Upgrade to LLVM 3.9.1 Jan 2, 2017
circle.yml Make installation of the LTO plugin optional. Nov 29, 2016 Remove -flto-binary from ldc.conf default settings (revert 77bcc6e), … Nov 29, 2016 Remove -flto-binary from ldc.conf default settings (revert 77bcc6e), … Nov 29, 2016 Remove -flto-binary from ldc.conf default settings (revert 77bcc6e), … Nov 29, 2016

LDC – the LLVM-based D Compiler

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The LDC project aims to provide a portable D programming language compiler with modern optimization and code generation capabilities.

The compiler uses the official DMD frontends to support the latest version of D2, and relies on the LLVM Core libraries for code generation.

LDC is fully Open Source; the parts of the code not taken/adapted from other projects are BSD-licensed (see the LICENSE file for details).

Please consult the D wiki for further information:

D1 is no longer available; see the 'd1' Git branch for the last version supporting it.


From a pre-built package

Linux and OS X

Some package managers include recent versions of LDC, so manually installing it might not be necessary. For several platforms, there are also stand-alone binary builds available at the GitHub release page.

Arch Linux pacman -S ldc
Debian apt-get install ldc
Fedora yum install ldc
Gentoo layman -a ldc
Homebrew brew install ldc
Ubuntu apt-get install ldc

The latest official releases can be downloaded from the GitHub release page.

For bleeding-edge users, we also provide the latest successful continuous integration builds.

LDC for Windows relies on the Microsoft linker. So you'll either need Visual Studio (2015 is greatly encouraged; 2013 works too if you build LDC yourself) with Visual C++, or the stand-alone Visual C++ Build Tools.

Building from source

In-depth material on building and installing LDC and the standard libraries is available on the project wiki for Linux and OS X and Windows.

If you have a working C++ build environment, CMake, a current LLVM (>= 3.5), and libconfig available there should be no big surprises. Building LDC also requires a working D compiler, DMD and LDC are supported. (LDC 0.17 is the last version that does not need a D compiler, and for that reason we try to maintain it in the 'ltsmaster' branch).

Do not forget to make sure all the submodules (druntime, phobos, dmd-testsuite) are up to date:

$ cd ldc
$ git submodule update --recursive --init


The best way to get in touch with the developers is either via the digitalmars.D.ldc forum/newsgroup/mailing list ( or our Gitter chat. There is also the #ldc IRC channel on FreeNode.

For further documentation, contributor information, etc. please see the D wiki:

Feedback of any kind is very much appreciated!