
The `opencv@3` build calls `gmake`, which ends up evading our compiler shim and results in a build failure because of a `-Werror` flag. Closes Homebrew/homebrew-core#132966.
The `opencv@3` build calls `gmake`, which ends up evading our compiler shim and results in a build failure because of a `-Werror` flag. Closes Homebrew/homebrew-core#132966.