## FindBoost component math not working

I have a very simple use case of Boost's root finding algorithms as documented here: https://www.boost.org/doc/libs/1_69_0/libs/math/doc/html/math_toolkit/roots_deriv.html Basically, I only need the header #include <boost/math/tools/roots.hpp> in my code. I tried `find_package(Boost REQUIRED COMPONENTS math)`

and I got the error:

```
CMake Error at /usr/local/Cellar/cmake/3.13.4/share/cmake/Modules/FindBoost.cmake:2100 (message):
Unable to find the requested Boost libraries.
Boost version: 1.68.0
Boost include path: /usr/local/include
Could not find the following Boost libraries:
boost_math
Some (but not all) of the required Boost libraries were found. You may
need to install these additional Boost libraries. Alternatively, set
BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT
to the location of Boost.
Call Stack (most recent call first):
CMakeLists.txt:5 (find_package)
```

Judging from `FindBoost.cmake`

, maybe I should use something like `find_package(Boost REQUIRED COMPONENTS math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l)`

? AFAIK, these are compiled libraries that I don't actually need. Is there a way of finding the header-only component of boost.math in cmake?