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Diffstat (limited to 'llvm/docs/GettingStarted.rst')
| -rw-r--r-- | llvm/docs/GettingStarted.rst | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/llvm/docs/GettingStarted.rst b/llvm/docs/GettingStarted.rst index 372fd40..3036dae 100644 --- a/llvm/docs/GettingStarted.rst +++ b/llvm/docs/GettingStarted.rst @@ -12,7 +12,7 @@ Welcome to the LLVM project! The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header -files needed to process intermediate representations and converts it into +files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer. It also contains basic regression tests. @@ -32,11 +32,11 @@ Getting the Source Code and Building LLVM #. Check out LLVM (including subprojects like Clang): * ``git clone https://github.com/llvm/llvm-project.git`` - * Or, on windows: + * Or, on Windows: ``git clone --config core.autocrlf=false https://github.com/llvm/llvm-project.git`` - * To save storage and speed-up the checkout time, you may want to do a + * To save storage and speed up the checkout time, you may want to do a `shallow clone <https://git-scm.com/docs/git-clone#Documentation/git-clone.txt---depthltdepthgt>`_. For example, to get the latest revision of the LLVM project, use @@ -71,7 +71,7 @@ Getting the Source Code and Building LLVM Some common options: - * ``-DLLVM_ENABLE_PROJECTS='...'`` --- semicolon-separated list of the LLVM + * ``-DLLVM_ENABLE_PROJECTS='...'`` --- A semicolon-separated list of the LLVM subprojects you'd like to additionally build. Can include any of: clang, clang-tools-extra, lldb, lld, polly, or cross-project-tests. @@ -82,10 +82,10 @@ Getting the Source Code and Building LLVM pathname of where you want the LLVM tools and libraries to be installed (default ``/usr/local``). - * ``-DCMAKE_BUILD_TYPE=type`` --- Controls optimization level and debug + * ``-DCMAKE_BUILD_TYPE=type`` --- Controls the optimization level and debug information of the build. Valid options for *type* are ``Debug``, ``Release``, ``RelWithDebInfo``, and ``MinSizeRel``. For more detailed - information see :ref:`CMAKE_BUILD_TYPE <cmake_build_type>`. + information, see :ref:`CMAKE_BUILD_TYPE <cmake_build_type>`. * ``-DLLVM_ENABLE_ASSERTIONS=ON`` --- Compile with assertion checks enabled (default is ON for Debug builds, OFF for all other build types). @@ -124,7 +124,7 @@ Getting the Source Code and Building LLVM ``ninja -C build check-llvm`` - This will setup an LLVM build with debugging info, then compile LLVM and + This will set up an LLVM build with debugging info, then compile LLVM and run LLVM tests. * For more detailed information on CMake options, see `CMake <CMake.html>`__ @@ -150,7 +150,7 @@ page. For stand-alone builds, you must have an llvm install that is configured properly to be consumable by stand-alone builds of the other projects. -This could be a distro provided LLVM install, or you can build it yourself, +This could be a distro-provided LLVM install, or you can build it yourself, like this: .. code-block:: console @@ -195,7 +195,7 @@ clang clang, cmake CLANG_INCLUDE_TESTS=ON (Required for check lld lld, cmake ============ ======================== ====================== -Example for building stand-alone `clang`: +Example of building stand-alone `clang`: .. code-block:: console @@ -224,7 +224,7 @@ Example for building stand-alone `clang`: Requirements ============ -Before you begin to use the LLVM system, review the requirements given below. +Before you begin to use the LLVM system, review the requirements below. This may save you some trouble by knowing ahead of time what hardware and software you will need. @@ -265,7 +265,7 @@ Windows on Arm ARM64 Visual Studio, Clang\ :sup:`4` #. Code generation supported for Pentium processors and up #. Code generation supported for 32-bit ABI only - #. To use LLVM modules on Win32-based system, you may configure LLVM + #. To use LLVM modules on a Win32-based system, you may configure LLVM with ``-DBUILD_SHARED_LIBS=On``. #. Visual Studio alone can compile LLVM. When using Clang, you must also have Visual Studio installed. @@ -309,7 +309,7 @@ Package Version Notes #. Only needed if you want to run the automated test suite in the ``llvm/test`` directory, or if you plan to utilize any Python libraries, utilities, or bindings. - #. Optional, adds compression / uncompression capabilities to selected LLVM + #. Optional, adds compression/uncompression capabilities to selected LLVM tools. #. Optional, you can use any other build tool supported by CMake. #. Only needed when building libc with New Headergen. Mainly used by libc. @@ -401,11 +401,11 @@ Studio 2019 (or later), or a recent version of mingw64. FreeBSD 10.0 and newer have a modern Clang as the system compiler. However, some Linux distributions and some other or older BSDs sometimes have -extremely old versions of GCC. These steps attempt to help you upgrade you +extremely old versions of GCC. These steps attempt to help you upgrade your compiler even on such a system. However, if at all possible, we encourage you to use a recent version of a distribution with a modern system compiler that meets these requirements. Note that it is tempting to install a prior -version of Clang and libc++ to be the host compiler, however libc++ was not +version of Clang and libc++ to be the host compiler; however, libc++ was not well tested or set up to build on Linux until relatively recently. As a consequence, this guide suggests just using libstdc++ and a modern GCC as the initial host in a bootstrap, and then using Clang (and potentially libc++). @@ -514,11 +514,11 @@ appropriate pathname on your local system. All these paths are absolute: ``SRC_ROOT`` - This is the top level directory of the LLVM source tree. + This is the top-level directory of the LLVM source tree. ``OBJ_ROOT`` - This is the top level directory of the LLVM object tree (i.e. the tree where + This is the top-level directory of the LLVM object tree (i.e. the tree where object files and compiled programs will be placed. It can be the same as SRC_ROOT). @@ -666,7 +666,7 @@ cross-compiling CMake provides a variable ``CMAKE_TOOLCHAIN_FILE`` which can define compiler flags and variables used during the CMake test operations. The result of such a build is executables that are not runnable on the build -host but can be executed on the target. As an example the following CMake +host but can be executed on the target. As an example, the following CMake invocation can generate build files targeting iOS. This will work on macOS with the latest Xcode: @@ -770,7 +770,7 @@ Generates system build files. - Some simple examples showing how to use LLVM as a compiler for a custom language - including lowering, optimization, and code generation. -- Kaleidoscope Tutorial: Kaleidoscope language tutorial run through the +- Kaleidoscope Tutorial: Kaleidoscope language tutorial runs through the implementation of a nice little compiler for a non-trivial language including a hand-written lexer, parser, AST, as well as code generation support using LLVM- both static (ahead of time) and various approaches to @@ -858,7 +858,7 @@ share code among the `tools`_. ``llvm/lib/Support/`` - Source code that corresponding to the header files in ``llvm/include/ADT/`` + Source code that corresponds to the header files in ``llvm/include/ADT/`` and ``llvm/include/Support/``. ``llvm/bindings`` @@ -1051,7 +1051,7 @@ Example with clang % lli hello.bc - The second examples shows how to invoke the LLVM JIT, :doc:`lli + The second example shows how to invoke the LLVM JIT, :doc:`lli <CommandGuide/lli>`. #. Use the ``llvm-dis`` utility to take a look at the LLVM assembly code: @@ -1163,7 +1163,7 @@ following options with cmake: Consider setting this to ``ON`` if you require a debug build, as this will ease memory pressure on the linker. This will make linking much faster, as the - binaries will not contain any of the debug information. Instead the debug + binaries will not contain any of the debug information. Instead, the debug information is in a separate DWARF object file (with the extension ``.dwo``). This only applies to host platforms using ELF, such as Linux. |