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llvm-config - Print LLVM compilation options


llvm-config option [components...]


llvm-config makes it easier to build applications that use LLVM. It can print the
compiler flags, linker flags and object libraries needed to link against LLVM.


To link against the JIT:

g++ `llvm-config --cxxflags` -o HowToUseJIT.o -c HowToUseJIT.cpp
g++ `llvm-config --ldflags` -o HowToUseJIT HowToUseJIT.o \
`llvm-config --libs engine bcreader scalaropts`


Print the version number of LLVM.

Print a summary of llvm-config arguments.

Print the installation prefix for LLVM.

Print the source root from which LLVM was built.

Print the object root used to build LLVM.

Print the installation directory for LLVM binaries.

Print the installation directory for LLVM headers.

Print the installation directory for LLVM libraries.

Print the C++ compiler flags needed to use LLVM headers.

Print the flags needed to link against LLVM libraries.

Print all the libraries needed to link against the specified LLVM components, including
any dependencies.

Similar to --libs, but prints the bare filenames of the libraries without -l or
pathnames. Useful for linking against a not-yet-installed copy of LLVM.

Similar to --libs, but print the full path to each library file. This is useful when
creating makefile dependencies, to ensure that a tool is relinked if any library it
uses changes.

Print all valid component names.

Print the component names for all targets supported by this copy of LLVM.

Print the build mode used when LLVM was built (e.g. Debug or Release)


To print a list of all available components, run llvm-config --components. In most cases,
components correspond directly to LLVM libraries. Useful "virtual" components include:

Includes all LLVM libraries. The default if no components are specified.

Includes either a native backend or the C backend.

Includes either a native JIT or the bitcode interpreter.


If llvm-config succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit
with a non-zero value.

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