swiftxcodec++11armadillobridging-header

Armadillo C++ library - C++11 compiler required error

I'm using MacOS 10.15.7 with Xcode 12.4, I want to use Armadillo library in my iOS Swift project. So first I installed Armadillo through Homebrew.

Armadillo was installed in path /usr/local/Cellar/armadillo/

I found header files in path /usr/local/Cellar/armadillo/10.5.1/include and library files in path /usr/local/Cellar/armadillo/10.5.1/lib

In Xcode project, Build settings I provided the above paths in Header Search path and Library search path.

I'm getting below three errors.

Not sure how to proceed.. Any suggestions ???

Solution

  • You will not be able to do this easily. Swift does not yet support C++ interop, but this is a long term goal. You can read about in the C++ Interop Manifesto in the Swift git repo. The best you will be able to do right now is write an extern "C" wrapper in C++ around any C++ functions you want to call, and then import your wrapper into Swift. Since you're using an Xcode project, I would recommend trying something like this.

    Alternatively, depending on what you need Armadillo for, you might be able to by away without it. If you just need to do linear algebra, Apple includes LAPACK (see here) and BLAS (see here) inside Accelerate, which is available on all Apple platforms without installing anything. This might even be familiar to you because Armadillo does its matrix decompositions through LAPACK. There's also Quadrature (see here) if you are looking for integration. I've had good experiences with each of these.