Instructions for building on Mac

At this time, Audacity is usually built with the 10.7 SDK.  This is to give
compatibility with older versions of MacOSX.
To build Audacity using Xcode 5.1 or newer, you need to extract the 10.7 SDK
from an earlier version of Xcode.

In the instructions below, Xcode 4.3.3 (for the 10.7 SDK) and Xcode 8.1 will
be used and can be downloaded from https://developer.apple.com/download/more/ 
(requires Apple ID to login).

Fuller instructions that include 
   * Using other Xcodes
   * Optional signing of DMGs
can be found on our wiki at http://wiki.audacityteam.org/wiki/Building_On_Mac

1) Download Xcode 8.1 and install it to /Applications.
2) Download Xcode 4.3.3 (it includes the 10.6 and 10.7 SDK's despite 
   the downloads page says it only has the 10.7 SDK).
3) Open the DMG in Finder.
4) Right-click the "Xcode.app" bundle and select "Show Package Contents".
5) Navigate down the directories to get to:

   Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ .

6) Copy the MacOSX10.7.sdk folder to:

   /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/

7) Change the MinimumSDKVersion key value in 
   /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Info.plist 
   to 10.7

   Xcode is now ready.

8) Clone wxWidgets 3.1.1

   git clone --recurse-submodules https://github.com/audacity/wxWidgets.git

   Ensure that you clone with the "--recurse-submodules" option, and do not
   just download the Zip package, otherwise there will be required components
   missing.

   Don't be tempted to use Widgets already installed by a package manager such 
   as Homebrew because this will cause problems.

   We have applied some Audacity specific patches to wxWidgets to better 
   support VoiceOver, so please use the audacity-fixes-3.1.1 branch.  It's
   the default branch on our GitHub copy.
   https://github.com/audacity/wxWidgets/tree/audacity-fixes-3.1.1

   git checkout audacity-fixes-3.1.1

9) Change directory to the folder wxWidgets was cloned to then build/install 
    wxWidgets:

   sudo <path to Audacity source>/mac/scripts/build_wxwidgets

Check that this worked by looking for <path to wxWidgets>/bld_release_x86_64 
containing library .o files.  There should also be 3 other directories for
other combinations of debug/release i386/x86_64.  If this step did not work,
then later steps to build Audacity won't either.

If building wxWidgets worked, you should now be able to build Audacity 
using either the Xcode application or the Xcodebuild command line tool. 

* Change directory to <path to Audacity source>/mac
* Optionally, if you have built before, clean the Debug build with:

  xcodebuild clean

* Or clean up other versions using some variant of:

  xcodebuild clean -configuration Release64

'Release64' is for the 64 bit build.  'Release' is for the 32 bit build.
'Debug64' is for 64 bit debug build, 'Debug' is for 32 bit debug build.
  
* Build Audacity and create DMG and ZIP bundles in 
  /private/tmp by typing the following in the terminal:

  xcodebuild -configuration Release64 install

If you get errors about 'plist' at this stage, probably you skipped the step 
of cleaning first.  

* If you use the Xcode application, don't make any changes to 
  Audacity.xcodeproj recommended by Xcode. In particular, be sure to leave the
  Base SDK configuration set to 10.7 as it is now. 

If you need Audacity to show languages other than English, install the gettext
suite of tools (to get the msgfmt command).  The source can be downloaded from:

   ftp://ftp.gnu.org/gnu/gettext/gettext-latest.tar.gz

Untar it:

   tar xf gettext-latest.tar.gz

And install:

   cd gexttext-latest
   ./configure
   sudo make install