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llvm-build - LLVM Project Build Utility
llvm-build is a tool for working with LLVM projects that use the LLVMBuild system for
describing their components.
At heart, llvm-build is responsible for loading, verifying, and manipulating the project's
component data. The tool is primarily designed for use in implementing build systems and
tools which need access to the project structure information.
Print the builtin program help.
If given, load the project at the given source root path. If this option is not given,
the location of the project sources will be inferred from the location of the
llvm-build script itself.
Print the component tree for the project.
Write out the C++ fragment which defines the components, library names, and required
libraries. This C++ fragment is built into llvm-config|llvm-config in order to provide
clients with the list of required libraries for arbitrary component combinations.
Write out new LLVMBuild.txt files based on the loaded components. This is useful for
auto-upgrading the schema of the files. llvm-build will try to a limited extent to
preserve the comments which were written in the original source file, although at this
time it only preserves block comments that precede the section names in the LLVMBuild
Write out the LLVMBuild in the form of a CMake fragment, so it can easily be consumed
by the CMake based build system. The exact contents and format of this file are closely
tied to how LLVMBuild is integrated with CMake, see LLVM's top-level CMakeLists.txt.
Write out the LLVMBuild in the form of a Makefile fragment, so it can easily be
consumed by a Make based build system. The exact contents and format of this file are
closely tied to how LLVMBuild is integrated with the Makefiles, see LLVM's
If given, expect the LLVMBuild files for the project to be rooted at the given path,
instead of inside the source tree itself. This option is primarily designed for use in
conjunction with --write-llvmbuild to test changes to LLVMBuild schema.
llvm-build exits with 0 if operation was successful. Otherwise, it will exist with a
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