New comment by zenny on void-packages repository

https://github.com/void-linux/void-packages/issues/24706#issuecomment-687720959

Comment:
> According to https://github.com/Xaymar/obs-StreamFX/wiki/Building-From-Source the compilers shouldn't be a problem. While I see no problem in building this standalone (one option to build StreamFX), I'd rather not have this pollute the obs build (the other option).
> So if you or anyone else want to give this a spin, should be manageable first template.

I tried to compile but without success:

```
$ cmake -H. -B"build/flux" -G"Ninja" -DOBS_DOWNLOAD=ON -DCMAKE_PACKAGE_NAME=StreamFX -DCMAKE_PACKAGE_PREFIX="build/package" -DCMAKE_INSTALL_PREFIX="build/distrib"
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:64 (project):
  The CMAKE_C_COMPILER:

    gcc-9

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


CMake Error at CMakeLists.txt:64 (project):
  The CMAKE_CXX_COMPILER:

    g++-9

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!
```