Building On Mac

Instructions in mac/Build.txt

These instructions for building on mac are in mac/Build.txt in the Git repo.

At this time, the newest SDK version that Audacity can build with is 10.6. 
To build Audacity using Xcode 5.1 or newer, you need to extract the 10.6 SDK
from an earlier version of Xcode.

In the instructions below, Xcode 4.3.3 (for the 10.6 SDK) and Xcode 8.1 will
be used.  Fuller instructions that cover 
   * Using other Xcodes
   * Optional signing of DMGs
   * Applying wxWidgets patches one by one
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 MacOSX10.6.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 10.6

   Xcode is now ready.

8) Download Audacity's patched wxWidgets 3.0.2 zip from the Audacity fork of the 
   wxWidgets project: 
      https://github.com/audacity/wxWidgets/tree/audacity-fixes

   (use the green "clone or download" button on the right).

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

9) Once the download is complete, unzip it:

   unzip wxWidgets-audacity-fixes.zip

10) And finally build/install wxWidgets:

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

You should now be able to build Audacity using either the Xcode application or 
the Xcodebuild command line tool. Using xcodebuild: 

* Change directory to <path to Audacity source>/mac.

* Optionally, if you have built before, clean the Debug build with:
  xcodebuild clean

* If you built the Release build, clean with:
  xcodebuild clean -configuration Release  

* Build Audacity and create DMG and ZIP bundles in 
  /private/tmp by typing the following in the terminal:

  xcodebuild -configuration Release install   

* 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 10.6 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

More Detailed Wiki Instructions

These instructions for variations on building aren't in mac/build.txt in the Git repo.

Using wxWidgets from wxWidgets

Rather than downloading our patched wxWidgets, you can download 3.0.2 and patch it yourself

 Apply the following fixes to wxWidgets:

  cd wxWidgets-3.0.2
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/wxMac-3.0.2-fixes.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/eventloops.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/pinch-spread.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/focusrings.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/wxMac-3.0.2-wxaccessible.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/tooldock-quit.patch .
  patch -p0 -i <path to Audacity source>/mac/wxMac_additions/fullscreen.patch .

The patches and their reasons can be found here, and there is more description about them here in the wiki.

Updating GitIdent

The Audacity "About" box can contain a link to the git commit at which 
Audacity was built. To create this, run this batch script in /mac/scripts/

  get_gitident.sh

If you do this, you are responsible for making sure the ident is correct
in future builds.  The script overwrites RevisionIdent.h in the src directory.
If you make further changes to your local copy after this step, or merge a
more recent version from git, this file, and hence the ident in the build, 
stays the same, and so would be misleading.

To reset RevisionIdent.h you could do:

  git reset -hard origin/master

Signing the DMG

1) Comment out the last line of mac/scripts/build_dist.sh so that it reads

  #rm -rf ${DMG} TMP.dmg

  This will prevent deletion of TMP.dmg

2) Clean and build Audacity normally.

3) Navigate to /private/tmp/ and type 

   hdiutil resize -size 200m TMP.dmg

   This step is needed as codesigning takes some temporary space, more than is 
   available in the dmg.

4) mount the dmg
   hdiutil mount TMP.dmg

5) Codesign the app (deep to make sure everything important is signed)
    
   codesign --deep -s <identity> -v "/Volumes/Audacity 2.1.3/Audacity/Audacity.app"

6) Check it is signed to gatekeeper's satisfaction:

   spctl -a -v "/Volumes/Audacity 2.1.3/Audacity/Audacity.app"

7) unmount the dmg

8) Make a compressed dmg

   hdiutil convert TMP.dmg -format UDZO -imagekey zlib-level=9 -o "Newname.dmg"

9) codesign that

   codesign -s <identity> -v Newname.dmg

To test the signing, upload the dmg to dropbox and then download it again. Then double-click to install and drag across to /Applications. When you launch Audacity, you now get a warning about having downloaded from the internet, rather than being prevented from running...