doc/dev/macos: remove nonexistence flag `--with-toolchain`

` --with-toolchain` is an old option from llvm 6

Signed-off-by: Kamoltat Sirivadhna <ksirivad@redhat.com>

diff --git a/doc/dev/macos.rst b/doc/dev/macos.rst
index 1854191b7919fb6119763722f9f84358902c37fc..b932d71f31981f2167134f2e16adc1ba70893a21 100644 (file)
--- a/doc/dev/macos.rst
+++ b/doc/dev/macos.rst
@@ -3,7 +3,7 @@ build on MacOS
 
 Since we've switched to C++ 17, and the default clang shipped with Xcode 9 does not support all the C++ 17 language features, it's suggested to install clang using brew::
 
-  brew install --with-toolchain llvm
+  brew install llvm
 
 and install all the necessary bits::