Search code examples
c++boostcmakelibraries

How to include a library which I installed with Homebrew

I have installed the boost library with homebrew and if I write:

include_directories(/opt/homebrew/Cellar)
link_directories(/opt/homebrew/Cellar/boost/1.76.0/)
add_executable(Project main.cpp)
target_link_libraries(Project boost)

And then include it in my script:

#include <boost/multiprecision/cpp_int.hpp>

using namespace boost::multiprecision;

It doesn't find it, when I write:

#include <boost/1.76.0/include/boost/multiprecision/cpp_int.hpp>

using namespace boost::multiprecision;

It does find it but I get following error:

/opt/homebrew/Cellar/boost/1.76.0/include/boost/multiprecision/cpp_int.hpp:12:10: fatal error: 'boost/multiprecision/number.hpp' file not found
#include <boost/multiprecision/number.hpp>
The number.hpp file can't include the boost library.

Can anyone make sense out of this and can help me?

Solution

  • To add a Boost header-only library, such as multiprecision with cmake, usually all you need to do is:

    find_package(Boost)
link_libraries(Boost::headers)

    In case Boost was not installed correctly, you might still add it with:

    include_directories(/opt/homebrew/include)

    or:

    include_directories(/opt/homebrew/Celler/boost/1.76.0/include)