The LLVM-based D compiler.
D C++ C CMake Makefile Shell
Latest commit a7d530b Oct 25, 2016 @klickverbot klickverbot committed on GitHub Merge pull request #1846 from kinke/union
Fix union layout and initialization
Failed to load latest commit information.
bash_completion.d Use bash completion dir from config if available Feb 19, 2015
cmake/Modules fix build with LLVM 4.0: debuginfomsf needed by debuginfocodeview Sep 20, 2016
ddmd Introduce (hidden) command-line option `-cleanup-obj` Oct 15, 2016
driver Merge pull request #1830 from kinke/dub Oct 19, 2016
gen Merge pull request #1846 from kinke/union Oct 25, 2016
ir Fix dynamic initialization of unions Oct 24, 2016
runtime Implement single-thread fences via the LDC_fence pragma. (#1837) Oct 18, 2016
tests Fix dynamic initialization of unions Oct 24, 2016
tools Merge pull request #1812 from JohanEngelen/rename-ir2obj Oct 16, 2016
utils Move ldc-profdata source into the tools directory. Sep 15, 2016
vcbuild Windows: Detect Visual C++ Build Tools automatically Aug 16, 2016
.clang-format .clang-format: Disable include sorting for now [nfc] Mar 27, 2016
.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] Bump the LDC LTS version. Oct 16, 2016
CMakeCPack.cmake Add CPack configuration for debian packages Feb 12, 2014
CMakeLists.txt Bump version. Oct 23, 2016
Doxyfile Inlined sources in Doxygen docs (for tablet use) and increased DOT ma… Feb 20, 2015
LICENSE Relicense profile-rt/d/ldc/profile.d (sole author Johan Engelen). Oct 6, 2016 Remove Coveralls badge Sep 10, 2016
appveyor.yml Work around AppVeyor bug Sep 24, 2016
circle.yml CircleCI: build LDC with itself and test that version. (#1810) Oct 7, 2016 Simplify and fix install target Sep 26, 2015 Dynamically load libcurl when needed (backport from post-2.068 upstream) Aug 29, 2015 [PGO] Add PGO to LDC. Supported for LLVM >= 3.7 Jun 20, 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.

Distribution Command
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!