2012-05-09 00:50:35 +08:00
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llvm-config - Print LLVM compilation options
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============================================
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[docs][tools] Add missing "program" tags to rst files
Sphinx allows for definitions of command-line options using
`.. option <name>` and references to those options via `:option:<name>`.
However, it looks like there is no scoping of these options by default,
meaning that links can end up pointing to incorrect documents. See for
example the llvm-mca document, which contains references to -o that,
prior to this patch, pointed to a different document. What's worse is
that these links appear to be non-deterministic in which one is picked
(on my machine, some references end up pointing to opt, whereas on the
live docs, they point to llvm-dwarfdump, for example).
The fix is to add the .. program <name> tag. This essentially namespaces
the options (definitions and references) to the named program, ensuring
that the links are kept correct.
Reviwed by: andreadb
Differential Revision: https://reviews.llvm.org/D63873
llvm-svn: 364538
2019-06-27 21:24:46 +08:00
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.. program:: llvm-config
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2012-05-09 00:50:35 +08:00
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SYNOPSIS
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--------
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**llvm-config** *option* [*components*...]
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DESCRIPTION
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-----------
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**llvm-config** makes it easier to build applications that use LLVM. It can
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print the compiler flags, linker flags and object libraries needed to link
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against LLVM.
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EXAMPLES
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--------
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To link against the JIT:
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2012-06-12 23:45:07 +08:00
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.. code-block:: sh
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2012-05-09 00:50:35 +08:00
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g++ `llvm-config --cxxflags` -o HowToUseJIT.o -c HowToUseJIT.cpp
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g++ `llvm-config --ldflags` -o HowToUseJIT HowToUseJIT.o \
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`llvm-config --libs engine bcreader scalaropts`
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OPTIONS
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-------
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**--version**
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Print the version number of LLVM.
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**-help**
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Print a summary of **llvm-config** arguments.
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**--prefix**
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Print the installation prefix for LLVM.
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**--src-root**
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Print the source root from which LLVM was built.
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**--obj-root**
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Print the object root used to build LLVM.
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**--bindir**
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Print the installation directory for LLVM binaries.
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**--includedir**
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Print the installation directory for LLVM headers.
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**--libdir**
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Print the installation directory for LLVM libraries.
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**--cxxflags**
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Print the C++ compiler flags needed to use LLVM headers.
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**--ldflags**
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Print the flags needed to link against LLVM libraries.
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**--libs**
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Print all the libraries needed to link against the specified LLVM
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*components*, including any dependencies.
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**--libnames**
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Similar to **--libs**, but prints the bare filenames of the libraries
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without **-l** or pathnames. Useful for linking against a not-yet-installed
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copy of LLVM.
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**--libfiles**
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Similar to **--libs**, but print the full path to each library file. This is
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useful when creating makefile dependencies, to ensure that a tool is relinked if
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any library it uses changes.
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**--components**
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Print all valid component names.
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**--targets-built**
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Print the component names for all targets supported by this copy of LLVM.
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**--build-mode**
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Print the build mode used when LLVM was built (e.g. Debug or Release)
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COMPONENTS
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----------
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To print a list of all available components, run **llvm-config
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--components**. In most cases, components correspond directly to LLVM
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libraries. Useful "virtual" components include:
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**all**
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2014-08-12 02:04:46 +08:00
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Includes all LLVM libraries. The default if no components are specified.
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2012-05-09 00:50:35 +08:00
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**backend**
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Includes either a native backend or the C backend.
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**engine**
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Includes either a native JIT or the bitcode interpreter.
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EXIT STATUS
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-----------
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If **llvm-config** succeeds, it will exit with 0. Otherwise, if an error
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occurs, it will exit with a non-zero value.
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