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[Doc] Update OS X build notes for 10.11 SDK
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@ -1,21 +1,19 @@
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Deterministic OS X Dmg Notes.
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Working OS X DMGs are created in Linux by combining a recent clang,
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the Apple's binutils (ld, ar, etc), and DMG authoring tools.
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the Apple binutils (ld, ar, etc) and DMG authoring tools.
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Apple uses clang extensively for development and has upstreamed the necessary
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functionality so that a vanilla clang can take advantage. It supports the use
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of -F, -target, -mmacosx-version-min, and --sysroot, which are all necessary
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when building for OS X. A pre-compiled version of 3.2 is used because it was not
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available in the Precise repositories at the time this work was started. In the
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future, it can be switched to use system packages instead.
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when building for OS X.
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Apple's version of binutils (called cctools) contains lots of functionality
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missing in the FSF's binutils. In addition to extra linker options for
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frameworks and sysroots, several other tools are needed as well such as
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install_name_tool, lipo, and nmedit. These do not build under linux, so they
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have been patched to do so. The work here was used as a starting point:
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https://github.com/mingwandroid/toolchain4
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[mingwandroid/toolchain4](https://github.com/mingwandroid/toolchain4).
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In order to build a working toolchain, the following source packages are needed
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from Apple: cctools, dyld, and ld64.
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@ -29,16 +27,19 @@ originally done in toolchain4.
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To complicate things further, all builds must target an Apple SDK. These SDKs
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are free to download, but not redistributable.
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To obtain it, register for a developer account, then download the Xcode 6.1.1 dmg:
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https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_6.1.1/xcode_6.1.1.dmg
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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).
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This file is several gigabytes in size, but only a single directory inside is
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needed: Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
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needed:
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```
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Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
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```
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Unfortunately, the usual linux tools (7zip, hpmount, loopback mount) are incapable of opening this file.
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To create a tarball suitable for Gitian input, mount the dmg in OS X, then create it with:
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$ tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.9.sdk.tar.gz MacOSX10.9.sdk
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```
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$ tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.11.sdk.tar.gz MacOSX10.11.sdk
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```
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The Gitian descriptors build 2 sets of files: Linux tools, then Apple binaries
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which are created using these tools. The build process has been designed to
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@ -48,15 +49,14 @@ fully deterministic and may be freely redistributed.
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genisoimage is used to create the initial DMG. It is not deterministic as-is,
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so it has been patched. A system genisoimage will work fine, but it will not
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be deterministic because the file-order will change between invocations.
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The patch can be seen here:
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https://raw.githubusercontent.com/theuni/osx-cross-depends/master/patches/cdrtools/genisoimage.diff
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The patch can be seen here: [theuni/osx-cross-depends](https://raw.githubusercontent.com/theuni/osx-cross-depends/master/patches/cdrtools/genisoimage.diff).
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No effort was made to fix this cleanly, so it likely leaks memory badly. But
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it's only used for a single invocation, so that's no real concern.
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genisoimage cannot compress DMGs, so afterwards, the 'dmg' tool from the
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libdmg-hfsplus project is used to compress it. There are several bugs in this
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tool and its maintainer has seemingly abandoned the project. It has been forked
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and is available (with fixes) here: https://github.com/theuni/libdmg-hfsplus .
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and is available (with fixes) here: [theuni/libdmg-hfsplus](https://github.com/theuni/libdmg-hfsplus).
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The 'dmg' tool has the ability to create DMGs from scratch as well, but this
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functionality is broken. Only the compression feature is currently used.
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@ -77,6 +77,6 @@ build process to remain somewhat deterministic. Here's how it works:
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that have been previously (deterministically) built in order to create a
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final dmg.
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- The Apple keyholder uses this unsigned app to create a detached signature,
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using the script that is also included there.
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using the script that is also included there. Detached signatures are available from this [repository](https://github.com/bitcoin-core/bitcoin-detached-sigs).
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- Builders feed the unsigned app + detached signature back into Gitian. It
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uses the pre-built tools to recombine the pieces into a deterministic dmg.
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@ -5,11 +5,13 @@ The built-in one is located in `/Applications/Utilities/Terminal.app`.
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Preparation
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-----------
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Download and install [Xcode](https://developer.apple.com/xcode/download).
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Install the OS X command line tools:
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Once installed, run `xcode-select --install` to install the OS X command line tools.
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`xcode-select --install`
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Install [Homebrew](http://brew.sh).
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When the popup appears, click `Install`.
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Then install [Homebrew](http://brew.sh).
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Dependencies
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----------------------
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@ -3,7 +3,7 @@ Release Process
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Before every release candidate:
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* Update translations (ping wumpus on IRC) see [translation_process.md](https://github.com/bitcoin/bitcoin/blob/master/doc/translation_process.md#syncing-with-transifex)
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* Update translations (ping wumpus on IRC) see [translation_process.md](https://github.com/bitcoin/bitcoin/blob/master/doc/translation_process.md#synchronising-translations).
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Before every minor and major release:
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@ -75,7 +75,7 @@ Ensure your gitian.sigs are up-to-date if you wish to gverify your builds agains
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git pull
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popd
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Ensure gitian-builder is up-to-date to take advantage of new caching features (`e9741525c` or later is recommended).
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Ensure gitian-builder is up-to-date:
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pushd ./gitian-builder
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git pull
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@ -89,13 +89,7 @@ Ensure gitian-builder is up-to-date to take advantage of new caching features (`
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wget -P inputs http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
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popd
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Register and download the Apple SDK: see [OS X readme](README_osx.txt) for details.
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https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/xcode_6.1.1/xcode_6.1.1.dmg
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Using a Mac, create a tarball for the 10.9 SDK and copy it to the inputs directory:
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tar -C /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.9.sdk.tar.gz MacOSX10.9.sdk
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Create the OS X SDK tarball, see the [OS X readme](README_osx.md) for details, and copy it into the inputs directory.
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### Optional: Seed the Gitian sources cache and offline git repositories
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