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.
-h, --help
Print the builtin program help.
--source-root=PATH
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-tree
Print the component tree for the project.
--write-library-table
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-llvmbuild
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 files.
--write-cmake-fragment
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-make-fragment
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 Makefile.rules.
--llvmbuild-source-root=PATH
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 non-zero value.
Maintained by the LLVM Team (https://llvm.org/).
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