[Doc] Update OS X build notes for 10.11 SDK

doc/README_osx.md

@@ -1,21 +1,19 @@
 Deterministic OS X Dmg Notes.
 
 Working OS X DMGs are created in Linux by combining a recent clang,
-the Apple's binutils (ld, ar, etc), and DMG authoring tools.
+the Apple binutils (ld, ar, etc) and DMG authoring tools.
 
 Apple uses clang extensively for development and has upstreamed the necessary
 functionality so that a vanilla clang can take advantage. It supports the use
 of -F, -target, -mmacosx-version-min, and --sysroot, which are all necessary
-when building for OS X. A pre-compiled version of 3.2 is used because it was not
-available in the Precise repositories at the time this work was started. In the
-future, it can be switched to use system packages instead.
+when building for OS X.
 
 Apple's version of binutils (called cctools) contains lots of functionality
 missing in the FSF's binutils. In addition to extra linker options for
 frameworks and sysroots, several other tools are needed as well such as
 install_name_tool, lipo, and nmedit. These do not build under linux, so they
 have been patched to do so. The work here was used as a starting point:
-https://github.com/mingwandroid/toolchain4
+[mingwandroid/toolchain4](https://github.com/mingwandroid/toolchain4).
 
 In order to build a working toolchain, the following source packages are needed
 from Apple: cctools, dyld, and ld64.
@@ -29,16 +27,19 @@ originally done in toolchain4.
 
 To complicate things further, all builds must target an Apple SDK. These SDKs
 are free to download, but not redistributable.
-To obtain it, register for a developer account, then download the Xcode 6.1.1 dmg:
-https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_6.1.1/xcode_6.1.1.dmg
+To obtain it, register for a developer account, then download the [Xcode 7.3.1 dmg](https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/Xcode_7.3.1/Xcode_7.3.1.dmg).
 
 This file is several gigabytes in size, but only a single directory inside is
-needed: Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
+needed:
+```
+Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
+```
 
 Unfortunately, the usual linux tools (7zip, hpmount, loopback mount) are incapable of opening this file.
 To create a tarball suitable for Gitian input, mount the dmg in OS X, then create it with:
-  $ tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.9.sdk.tar.gz MacOSX10.9.sdk
-
+```
+  $ tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.11.sdk.tar.gz MacOSX10.11.sdk
+```
 
 The Gitian descriptors build 2 sets of files: Linux tools, then Apple binaries
 which are created using these tools. The build process has been designed to
@@ -48,15 +49,14 @@ fully deterministic and may be freely redistributed.
 genisoimage is used to create the initial DMG. It is not deterministic as-is,
 so it has been patched. A system genisoimage will work fine, but it will not
 be deterministic because the file-order will change between invocations.
-The patch can be seen here:
-https://raw.githubusercontent.com/theuni/osx-cross-depends/master/patches/cdrtools/genisoimage.diff
+The patch can be seen here:  [theuni/osx-cross-depends](https://raw.githubusercontent.com/theuni/osx-cross-depends/master/patches/cdrtools/genisoimage.diff).
 No effort was made to fix this cleanly, so it likely leaks memory badly. But
 it's only used for a single invocation, so that's no real concern.
 
 genisoimage cannot compress DMGs, so afterwards, the 'dmg' tool from the
 libdmg-hfsplus project is used to compress it. There are several bugs in this
 tool and its maintainer has seemingly abandoned the project. It has been forked
-and is available (with fixes) here: https://github.com/theuni/libdmg-hfsplus .
+and is available (with fixes) here: [theuni/libdmg-hfsplus](https://github.com/theuni/libdmg-hfsplus).
 
 The 'dmg' tool has the ability to create DMGs from scratch as well, but this
 functionality is broken. Only the compression feature is currently used.
@@ -77,6 +77,6 @@ build process to remain somewhat deterministic. Here's how it works:
   that have been previously (deterministically) built in order to create a
   final dmg.
 - The Apple keyholder uses this unsigned app to create a detached signature,
-  using the script that is also included there.
+  using the script that is also included there. Detached signatures are available from this [repository](https://github.com/bitcoin-core/bitcoin-detached-sigs).
 - Builders feed the unsigned app + detached signature back into Gitian. It
   uses the pre-built tools to recombine the pieces into a deterministic dmg.

doc/build-osx.md

@@ -5,11 +5,13 @@ The built-in one is located in `/Applications/Utilities/Terminal.app`.
 
 Preparation
 -----------
-Download and install [Xcode](https://developer.apple.com/xcode/download).
+Install the OS X command line tools:
 
-Once installed, run `xcode-select --install` to install the OS X command line tools.
+`xcode-select --install`
 
-Install [Homebrew](http://brew.sh).
+When the popup appears, click `Install`.
+
+Then install [Homebrew](http://brew.sh).
 
 Dependencies
 ----------------------

doc/release-process.md

@@ -3,7 +3,7 @@ Release Process
 
 Before every release candidate:
 
-* Update translations (ping wumpus on IRC) see [translation_process.md](https://github.com/bitcoin/bitcoin/blob/master/doc/translation_process.md#syncing-with-transifex)
+* Update translations (ping wumpus on IRC) see [translation_process.md](https://github.com/bitcoin/bitcoin/blob/master/doc/translation_process.md#synchronising-translations).
 
 Before every minor and major release:
 
@@ -13,7 +13,7 @@ Before every minor and major release:
 
 Before every major release:
 
-* Update hardcoded [seeds](/contrib/seeds/README.md), see [this pull request](https://github.com/bitcoin/bitcoin/pull/7415) for an example. 
+* Update hardcoded [seeds](/contrib/seeds/README.md), see [this pull request](https://github.com/bitcoin/bitcoin/pull/7415) for an example.
 
 ### First time / New builders
 
@@ -75,7 +75,7 @@ Ensure your gitian.sigs are up-to-date if you wish to gverify your builds agains
     git pull
     popd
 
-Ensure gitian-builder is up-to-date to take advantage of new caching features (`e9741525c` or later is recommended).
+Ensure gitian-builder is up-to-date:
 
     pushd ./gitian-builder
     git pull
@@ -89,13 +89,7 @@ Ensure gitian-builder is up-to-date to take advantage of new caching features (`
     wget -P inputs http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
     popd
 
-Register and download the Apple SDK: see [OS X readme](README_osx.txt) for details.
-
-https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_6.1.1/xcode_6.1.1.dmg
-
-Using a Mac, create a tarball for the 10.9 SDK and copy it to the inputs directory:
-
-    tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.9.sdk.tar.gz MacOSX10.9.sdk
+Create the OS X SDK tarball, see the [OS X readme](README_osx.md) for details, and copy it into the inputs directory.
 
 ### Optional: Seed the Gitian sources cache and offline git repositories
 
@@ -239,7 +233,7 @@ transmission-show -m <torrent file>
 Insert the magnet URI into the announcement sent to mailing lists. This permits
 people without access to `bitcoin.org` to download the binary distribution.
 Also put it into the `optional_magnetlink:` slot in the YAML file for
-bitcoin.org (see below for bitcoin.org update instructions). 
+bitcoin.org (see below for bitcoin.org update instructions).
 
 - Update bitcoin.org version