CMake Cookbook

How to do it

Our CMakeLists.txt will have to contain a custom command to extract the sources for the linear algebra wrapper library. Let us look at it in detail:

1. We start with a familiar definition of the minimum CMake version, project name, and supported language:

cmake_minimum_required(VERSION 3.5 FATAL_ERROR)project(recipe-03 LANGUAGES CXX Fortran)

2. We pick the C++11 standard, as usual:

set(CMAKE_CXX_STANDARD 11)set(CMAKE_CXX_EXTENSIONS OFF)set(CMAKE_CXX_STANDARD_REQUIRED ON)

3. It is then time to look for the BLAS and LAPACK libraries on our system:

find_package(BLAS REQUIRED)find_package(LAPACK REQUIRED)

4. We declare a variable, wrap_BLAS_LAPACK_sources, to hold the names of the source files contained in the wrap_BLAS_LAPACK.tar.gz ...