llvm-pkg-config

Generate Pkg-Config configuration file for LLVM.

Building the llvm-base package is fragile due to its configuration process. It would be much simpler, if LLVM would support pkg-config since this is nicely integrated in Cabal. However, LLVM developers do not seem to care much about it: http://llvm.org/bugs/show_bug.cgi?id=9405. If we are lucky we get pkg-config support in Debian Linux. Until this comes true, you can use this program. It calls llvm-config and writes its output to a PC file.

llvm-pkg-config

calls default llvm-config and writes the generated file to standard output.

sudo llvm-pkg-config --install

installs the PC file at a default location. This should be the standard task to perform.

llvm-pkg-config --llvm-config=/custom/path/to/llvm-config

if you have multiple versions of LLVM installed you may choose an llvm-config other than the default one.

You can check, whether your config file is found by pkg-config using

pkg-config --modversion llvm

It should show the version number of LLVM you want to use.

If you install llvm.pc in a non-standard location you may need to extend the search path for pkg-config

export PKG_CONFIG_PATH=your-llvm-pc-path:$PKG_CONFIG_PATH

The package also includes the bash script make-pkg-config.sh that should also generate the llvm.pc file.

For Nix we ship a file named llvm-pc.nix. It creates the llvm.pc file and exposes it to importing Nix packages. You can include it in your Nix expression like so:

callPackage ./llvm-pc.nix {llvmPackages=pkgs.llvmPackages_21;}