[SOLVED] Specify compiler Homebrew install

Issue

I have hit a roadblock when trying to install mkvtoolnix with homebrew on OSX 10.8

When I try brew install mkvtoolnix I get the following error trace

checking for support for C++11 feature "nullptr"... yes
checking for support for C++11 feature "tuples"... yes
checking for support for C++11 feature "alias declarations"... yes
checking for support for C++14 feature "std::make_unique"... no
checking for support for C++14 feature "digit separators"... no
checking for support for C++14 feature "binary literals"... no
checking for support for C++14 feature "generic lambdas"... no
The following features of the C++11/C++14 standards are not supported by clang++:
  * std::make_unique function (C++14)
  * digit separators (C++14)
  * binary literals (C++14)
  * generic lambdas (C++14)
If you are using the GNU C compiler collection (gcc) then you need
at least v4.9.x.
configure: error: support for required C++11/C++14 features incomplete

Which makes sense since clang++ does not support C++14 features. Moreover, I have installed GCC 5.2 and thus could use g++-5.2.0 to compile those.

The problem is I have not seen anyway of setting a different compiler when calling brew install

I have already tried adding cc,c++,gcc and g++ to the PATH and symlinking them to usr/local/bin and usr/bin to no avail, it always resorts to clang++

How can I specify g++-5.2.0 as the compiler?

Solution

You need to add an option to your install command:

brew install --cc=gcc-5.2 mkvtoolnix

Take care that only a restricted list of compilers are allowed (homebrew compilers). You should also check that gcc-5.2 is installed:

which gcc-5.2

Answered By - Thomas

Answer Checked By - Cary Denson (WPSolving Admin)