Man1 - llvm-config.1

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:

#+begin_quote

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

#+end_quote

–version

#+begin_quote Print the version number of LLVM.

#+end_quote

-help

#+begin_quote Print a summary of llvm-config arguments.

#+end_quote

–prefix

#+begin_quote Print the installation prefix for LLVM.

#+end_quote

–src-root

#+begin_quote Print the source root from which LLVM was built.

#+end_quote

–obj-root

#+begin_quote Print the object root used to build LLVM.

#+end_quote

–bindir

#+begin_quote Print the installation directory for LLVM binaries.

#+end_quote

–includedir

#+begin_quote Print the installation directory for LLVM headers.

#+end_quote

–libdir

#+begin_quote Print the installation directory for LLVM libraries.

#+end_quote

–cxxflags

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

#+end_quote

–ldflags

#+begin_quote Print the flags needed to link against LLVM libraries.

#+end_quote

–libs

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

#+end_quote

–libnames

#+begin_quote 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.

#+end_quote

–libfiles

#+begin_quote 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.

#+end_quote

–components

#+begin_quote Print all valid component names.

#+end_quote

–targets-built

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

#+end_quote

–build-mode

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

#+end_quote

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:

all

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

#+end_quote

backend

#+begin_quote Includes either a native backend or the C backend.

#+end_quote

engine

#+begin_quote Includes either a native JIT or the bitcode interpreter.

#+end_quote

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

Maintained by the LLVM Team (https://llvm.org/).

2003-2021, LLVM Project