Merge pull request #3181 from artisteacher/update_mac_build_directions

Update macOS build steps

doc/how_to_build_macosx.md

@@ -1,5 +1,5 @@
 
-# Setting Up the Development Environment on MacOSX
+# Setting Up the Development Environment on macOS
 
 ## Necessary Software
 
@@ -10,10 +10,10 @@
 - Qt (5.9.2 or later)
 - boost (1.55.0 or later)
 
-## Building on MacOSX
+## Building on macOS
 ### Download boost from https://boost.org
 
-Download the .bz2 mac (unix if mac not specified) version 1_55_0 or later (last tested with 1_69_0)
+Download the .bz2 mac (unix if mac not specified) version 1_55_0 or later (last tested with 1_72_0)
 
 Save for later step.
 
@@ -32,7 +32,7 @@ Check site for any changes in installation instructions, but they will probably
 1. Open a Terminal window
 2. Execute the following statement:
 ```
-$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
 ```
 
 ### Install required software using brew
@@ -47,6 +47,13 @@ NOTE: This will install the latest version of QT which may not be compatible wit
 
 If you cannot use the most recent version, download the online installer from https://www.qt.io/download and install the appropriate `macOS` version (min 5.9.2).  If installing via this method, be sure to install the `Qt Script (Deprecated)` libraries.
 
+### Remove incompatible symbolic directory
+Check to see if this symbolic glew directory exists. If so, remove it:
+```
+$ ls -l /usr/local/lib/cmake/glew
+$ rm /usr/local/lib/cmake/glew
+```
+
 ### Set up OpenToonz repository
 
 These steps will put the OpenToonz repository under /Users/yourlogin/Documents.