-.. _building-with-cmake:
-
========================
Building LLVM with CMake
========================
#. Create a directory for containing the build. It is not supported to build
LLVM on the source directory. cd to this directory:
- .. code-block:: bash
+ .. code-block:: console
$ mkdir mybuilddir
$ cd mybuilddir
#. Execute this command on the shell replacing `path/to/llvm/source/root` with
the path to the root of your LLVM source tree:
- .. code-block:: bash
+ .. code-block:: console
$ cmake path/to/llvm/source/root
explicitly specify the generator with the command line option ``-G "Name of the
generator"``. For knowing the available generators on your platform, execute
-.. code-block:: bash
+.. code-block:: console
$ cmake --help
This will list the generator's names at the end of the help text. Generator's
names are case-sensitive. Example:
-.. code-block:: bash
+.. code-block:: console
$ cmake -G "Visual Studio 9 2008" path/to/llvm/source/root
variables, with possible values ON/OFF. Options and variables are defined on the
CMake command line like this:
-.. code-block:: bash
+.. code-block:: console
$ cmake -DVARIABLE=value path/to/llvm/source
You can set a variable after the initial CMake invocation for changing its
value. You can also undefine a variable:
-.. code-block:: bash
+.. code-block:: console
$ cmake -UVARIABLE path/to/llvm/source
Variables are listed here appending its type after a colon. It is correct to
write the variable and the type on the CMake command line:
-.. code-block:: bash
+.. code-block:: console
$ cmake -DVARIABLE:TYPE=value path/to/llvm/source
**LLVM_TARGETS_TO_BUILD**:STRING
Semicolon-separated list of targets to build, or *all* for building all
- targets. Case-sensitive. For Visual C++ defaults to *X86*. On the other cases
- defaults to *all*. Example: ``-DLLVM_TARGETS_TO_BUILD="X86;PowerPC"``.
+ targets. Case-sensitive. Defaults to *all*. Example:
+ ``-DLLVM_TARGETS_TO_BUILD="X86;PowerPC"``.
**LLVM_BUILD_TOOLS**:BOOL
Build LLVM tools. Defaults to ON. Targets for building each tool are generated
tests.
**LLVM_APPEND_VC_REV**:BOOL
- Append version control revision info (svn revision number or git revision id)
+ Append version control revision info (svn revision number or Git revision id)
to LLVM version string (stored in the PACKAGE_VERSION macro). For this to work
cmake must be invoked before the build. Defaults to OFF.
**LLVM_USE_INTEL_JITEVENTS**:BOOL
Enable building support for Intel JIT Events API. Defaults to OFF
+**LLVM_ENABLE_ZLIB**:BOOL
+ Build with zlib to support compression/uncompression in LLVM tools.
+ Defaults to ON.
+
Executing the test suite
========================
using makefiles, execute this command while on the top level of your build
directory:
-.. code-block:: bash
+.. code-block:: console
$ make check
target_link_libraries(mycompiler ${REQ_LLVM_LIBRARIES})
+.. _cmake-out-of-source-pass:
+
Developing LLVM pass out of source
----------------------------------
It is possible to develop LLVM passes against installed LLVM. An example of
project layout provided below:
-.. code-block:: bash
+.. code-block:: none
<project dir>/
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