209 lines
8.3 KiB
Markdown
209 lines
8.3 KiB
Markdown
macOS Build Instructions and Notes
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====================================
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The commands in this guide should be executed in a Terminal application.
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The built-in one is located in `/Applications/Utilities/Terminal.app`.
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Preparation
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-----------
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Install the macOS command line tools:
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`xcode-select --install`
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When the popup appears, click `Install`.
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Then install [Homebrew](https://brew.sh).
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Dependencies
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----------------------
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brew install automake berkeley-db4 libtool boost miniupnpc openssl pkg-config protobuf python qt libevent qrencode
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See [dependencies.md](dependencies.md) for a complete overview.
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If you want to build the disk image with `make deploy` (.dmg / optional), you need RSVG:
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brew install librsvg
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Berkeley DB
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-----------
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It is recommended to use Berkeley DB 4.8. If you have to build it yourself,
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you can use [the installation script included in contrib/](/contrib/install_db4.sh)
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like so:
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```shell
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./contrib/install_db4.sh .
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```
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from the root of the repository.
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**Note**: You only need Berkeley DB if the wallet is enabled (see [*Disable-wallet mode*](/doc/build-osx.md#disable-wallet-mode)).
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Build Bitcoin Core
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------------------------
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1. Clone the Bitcoin Core source code:
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git clone https://github.com/bitcoin/bitcoin
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cd bitcoin
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2. Build Bitcoin Core:
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Configure and build the headless Bitcoin Core binaries as well as the GUI (if Qt is found).
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You can disable the GUI build by passing `--without-gui` to configure.
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./autogen.sh
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./configure
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make
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3. It is recommended to build and run the unit tests:
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make check
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4. You can also create a .dmg that contains the .app bundle (optional):
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make deploy
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Disable-wallet mode
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--------------------
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When the intention is to run only a P2P node without a wallet, Bitcoin Core may be compiled in
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disable-wallet mode with:
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./configure --disable-wallet
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In this case there is no dependency on Berkeley DB 4.8.
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Mining is also possible in disable-wallet mode using the `getblocktemplate` RPC call.
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Running
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-------
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Bitcoin Core is now available at `./src/bitcoind`
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Before running, you may create an empty configuration file:
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mkdir -p "/Users/${USER}/Library/Application Support/Bitcoin"
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touch "/Users/${USER}/Library/Application Support/Bitcoin/bitcoin.conf"
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chmod 600 "/Users/${USER}/Library/Application Support/Bitcoin/bitcoin.conf"
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The first time you run bitcoind, it will start downloading the blockchain. This process could take many hours, or even days on slower than average systems.
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You can monitor the download process by looking at the debug.log file:
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tail -f $HOME/Library/Application\ Support/Bitcoin/debug.log
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Other commands:
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-------
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./src/bitcoind -daemon # Starts the bitcoin daemon.
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./src/bitcoin-cli --help # Outputs a list of command-line options.
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./src/bitcoin-cli help # Outputs a list of RPC commands when the daemon is running.
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Notes
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-----
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* Tested on OS X 10.10 Yosemite through macOS 10.13 High Sierra on 64-bit Intel processors only.
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* Building with downloaded Qt binaries is not officially supported. See the notes in [#7714](https://github.com/bitcoin/bitcoin/issues/7714)
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Deterministic macOS DMG Notes
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-----------------------------
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Working macOS DMGs are created in Linux by combining a recent clang,
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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 macOS.
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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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[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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These tools inject timestamps by default, which produce non-deterministic
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binaries. The ZERO_AR_DATE environment variable is used to disable that.
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This version of cctools has been patched to use the current version of clang's
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headers and its libLTO.so rather than those from llvmgcc, as it was
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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 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:
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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, there are two options:
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Using macOS, you can mount the dmg, and then create it with:
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```
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$ hdiutil attach Xcode_7.3.1.dmg
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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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Alternatively, you can use 7zip and SleuthKit to extract the files one by one.
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The script contrib/macdeploy/extract-osx-sdk.sh automates this. First ensure
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the dmg file is in the current directory, and then run the script. You may wish
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to delete the intermediate 5.hfs file and MacOSX10.11.sdk (the directory) when
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you've confirmed the extraction succeeded.
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```bash
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apt-get install p7zip-full sleuthkit
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contrib/macdeploy/extract-osx-sdk.sh
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rm -rf 5.hfs 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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avoid including the SDK's files in Gitian's outputs. All interim tarballs are
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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: [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: [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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Ideally, the creation could be fixed and genisoimage would no longer be necessary.
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Background images and other features can be added to DMG files by inserting a
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.DS_Store before creation. This is generated by the script
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contrib/macdeploy/custom_dsstore.py.
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As of OS X 10.9 Mavericks, using an Apple-blessed key to sign binaries is a
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requirement in order to satisfy the new Gatekeeper requirements. Because this
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private key cannot be shared, we'll have to be a bit creative in order for the
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build process to remain somewhat deterministic. Here's how it works:
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- Builders use Gitian to create an unsigned release. This outputs an unsigned
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dmg which users may choose to bless and run. It also outputs an unsigned app
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structure in the form of a tarball, which also contains all of the tools
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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. 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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