* ``make [-j]`` --- The ``-j`` specifies the number of jobs (commands) to run
simultaneously. This builds both LLVM and Clang for Debug+Asserts mode.
- The ``--enabled-optimized`` configure option is used to specify a Release
+ The ``--enable-optimized`` configure option is used to specify a Release
build.
* ``make check-all`` --- This run the regression tests to ensure everything
+--------------------------------------------------------------+-----------------+---------------------------------------------+
| `SVN <http://subversion.tigris.org/project_packages.html>`_ | >=1.3 | Subversion access to LLVM\ :sup:`2` |
+--------------------------------------------------------------+-----------------+---------------------------------------------+
-| `python <http://www.python.org/>`_ | >=2.4 | Automated test suite\ :sup:`3` |
-+--------------------------------------------------------------+-----------------+---------------------------------------------+
-| `perl <http://www.perl.com/download.csp>`_ | >=5.6.0 | Utilities |
+| `python <http://www.python.org/>`_ | >=2.5 | Automated test suite\ :sup:`3` |
+--------------------------------------------------------------+-----------------+---------------------------------------------+
| `GNU M4 <http://savannah.gnu.org/projects/m4>`_ | 1.4 | Macro processor for configuration\ :sup:`4` |
+--------------------------------------------------------------+-----------------+---------------------------------------------+
+--------------------------------------------------------------+-----------------+---------------------------------------------+
| `libtool <http://savannah.gnu.org/projects/libtool>`_ | 1.5.22 | Shared library manager\ :sup:`4` |
+--------------------------------------------------------------+-----------------+---------------------------------------------+
+| `zlib <http://zlib.net>`_ | >=1.2.3.4 | Compression library\ :sup:`5` |
++--------------------------------------------------------------+-----------------+---------------------------------------------+
.. note::
#. If you want to make changes to the configure scripts, you will need GNU
autoconf (2.60), and consequently, GNU M4 (version 1.4 or higher). You
will also need automake (1.9.6). We only use aclocal from that package.
+ #. Optional, adds compression/uncompression capabilities to selected LLVM
+ tools.
Additionally, your compilation host is expected to have the usual plethora of
Unix utilities. Specifically:
**Clang 3.0 on Mageia 2**. There's a packaging issue: Clang can not find at
least some (``cxxabi.h``) libstdc++ headers.
+**Clang in C++11 mode and libstdc++ 4.7.2**. This version of libstdc++
+contained `a bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53841>`__ which
+causes Clang to refuse to compile condition_variable header file. At the time
+of writing, this breaks LLD build.
+
.. _Getting Started with LLVM:
Getting Started with LLVM
Source release for the LLVM test-suite.
-``llvm-gcc-4.2-x.y.source.tar.gz``
-
- Source release of the llvm-gcc-4.2 front end. See README.LLVM in the root
- directory for build instructions.
-
-``llvm-gcc-4.2-x.y-platform.tar.gz``
-
- Binary release of the llvm-gcc-4.2 front end for a specific platform.
-
.. _checkout:
Checkout LLVM from Subversion
following releases are located in the following subdirectories of the '``tags``'
directory:
+* Release 3.3: **RELEASE_33/final**
+* Release 3.2: **RELEASE_32/final**
* Release 3.1: **RELEASE_31/final**
* Release 3.0: **RELEASE_30/final**
* Release 2.9: **RELEASE_29/final**
the LLVM configure script as well as automatically updated when you run ``svn
update``.
-GIT mirror
+Git Mirror
----------
-GIT mirrors are available for a number of LLVM subprojects. These mirrors sync
+Git mirrors are available for a number of LLVM subprojects. These mirrors sync
automatically with each Subversion commit and contain all necessary git-svn
marks (so, you can recreate git-svn metadata locally). Note that right now
-mirrors reflect only ``trunk`` for each project. You can do the read-only GIT
+mirrors reflect only ``trunk`` for each project. You can do the read-only Git
clone of LLVM via:
.. code-block:: console
.. code-block:: console
- % git clone http://llvm.org/git/llvm.git
% cd llvm/tools
% git clone http://llvm.org/git/clang.git
+If you want to check out compiler-rt too, run:
+
+.. code-block:: console
+
+ % cd llvm/projects
+ % git clone http://llvm.org/git/compiler-rt.git
+
+If you want to check out the Test Suite Source Code (optional), run:
+
+.. code-block:: console
+
+ % cd llvm/projects
+ % git clone http://llvm.org/git/test-suite.git
+
Since the upstream repository is in Subversion, you should use ``git
pull --rebase`` instead of ``git pull`` to avoid generating a non-linear history
in your clone. To configure ``git pull`` to pass ``--rebase`` by default on the
% git config svn-remote.svn.fetch :refs/remotes/origin/master
% git svn rebase -l
+Likewise for compiler-rt and test-suite.
+
To update this clone without generating git-svn tags that conflict with the
-upstream git repo, run:
+upstream Git repo, run:
.. code-block:: console
git checkout master &&
git svn rebase -l)
+Likewise for compiler-rt and test-suite.
+
This leaves your working directories on their master branches, so you'll need to
``checkout`` each working branch individually and ``rebase`` it on top of its
parent branch.
-For those who wish to be able to update an llvm repo in a simpler fashion,
-consider placing the following git script in your path under the name
-``git-svnup``:
+For those who wish to be able to update an llvm repo/revert patches easily using
+git-svn, please look in the directory for the scripts ``git-svnup`` and
+``git-svnrevert``.
-.. code-block:: bash
+To perform the aforementioned update steps go into your source directory and
+just type ``git-svnup`` or ``git svnup`` and everything will just work.
- #!/bin/bash
+If one wishes to revert a commit with git-svn, but do not want the git hash to
+escape into the commit message, one can use the script ``git-svnrevert`` or
+``git svnrevert`` which will take in the git hash for the commit you want to
+revert, look up the appropriate svn revision, and output a message where all
+references to the git hash have been replaced with the svn revision.
- STATUS=$(git status -s | grep -v "??")
-
- if [ ! -z "$STATUS" ]; then
- STASH="yes"
- git stash >/dev/null
- fi
-
- git fetch
- OLD_BRANCH=$(git rev-parse --abbrev-ref HEAD)
- git checkout master 2> /dev/null
- git svn rebase -l
- git checkout $OLD_BRANCH 2> /dev/null
-
- if [ ! -z $STASH ]; then
- git stash pop >/dev/null
- fi
-
-Then to perform the aforementioned update steps go into your source directory
-and just type ``git-svnup`` or ``git svnup`` and everything will just work.
-
-To commit back changes via git-svn, use ``dcommit``:
+To commit back changes via git-svn, use ``git svn dcommit``:
.. code-block:: console
target names that you want available in llc. The target names use all lower
case. The current set of targets is:
- ``arm, cpp, hexagon, mblaze, mips, mipsel, msp430, powerpc, ptx, sparc, spu,
- x86, x86_64, xcore``.
+ ``arm, cpp, hexagon, mips, mipsel, msp430, powerpc, ptx, sparc, spu,
+ systemz, x86, x86_64, xcore``.
``--enable-doxygen``
The result of such a build is executables that are not runnable on on the build
host (--build option) but can be executed on the compile host (--host option).
+Check :doc:`HowToCrossCompileLLVM` and `Clang docs on how to cross-compile in general
+<http://clang.llvm.org/docs/CrossCompilation.html>`_ for more information
+about cross-compiling.
+
The Location of LLVM Object Files
---------------------------------
----------------------------
If you're running on a Linux system that supports the `binfmt_misc
-<http://www.tat.physik.uni-tuebingen.de/~rguenth/linux/binfmt_misc.html>`_
+<http://en.wikipedia.org/wiki/binfmt_misc>`_
module, and you have root access on the system, you can set your system up to
execute LLVM bitcode files directly. To do this, use commands like this (the
first command may not be required if you are already using the module):
This directory holds the source code for the LLVM assembly language parser
library.
-``llvm/lib/BitCode/``
+``llvm/lib/Bitcode/``
This directory holds code for reading and write LLVM bitcode.
Clang works just like GCC by default. The standard -S and -c arguments
work as usual (producing a native .s or .o file, respectively).
-#. Next, compile the C file into a LLVM bitcode file:
+#. Next, compile the C file into an LLVM bitcode file:
.. code-block:: console
projects / oota-llvm.git / blobdiff