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A few "a->an" and "an->a". "Shows, if the supplied default SOCKS5 proxy" -> "Shows if the supplied default SOCKS5 proxy". Change made on 3 occurrences. "without fully understanding the ramification of a command" -> "without fully understanding the ramifications of a command". Removed duplicate words such as "the the".
186 lines
8.1 KiB
Markdown
186 lines
8.1 KiB
Markdown
RPM Spec File Notes
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-------------------
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The RPM spec file provided here is for Bitcoin-Core 0.12.0 and builds on CentOS
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7 with either the CentOS provided OpenSSL library or with LibreSSL as packaged
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at [LibreLAMP.com](https://librelamp.com/). It should hopefully not be too
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difficult to port the RPM spec file to most RPM based Linux distributions.
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When porting the spec file to build for a particular distribution, there are
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some important notes.
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## Sources
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It is considered good form for all sources to reference a URL where the source
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can be downloaded.
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Sources 0-9 should be reserved for source code tarballs. `Source0` should
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reference the release tarball available from https://bitcoin.org/bin/ and
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`Source1` should reference the BerkeleyDB source.
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Sources 10-99 are for source files that are maintained in the
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[Bitcoin git repository](https://github.com/bitcoin/bitcoin) but are not part of
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the release tarball. Most of these will reside in the `contrib` sub-directory.
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Sources 10-19 should be reserved for miscellaneous configuration files.
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Currently only `Source10` is used, for the example `bitcoin.conf` file.
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Sources 20-29 should be reserved for man pages. Currently only `Source20`
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through `Source23` are used.
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Sources 30-39 should be reserved for SELinux related files. Currently only
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`Source30` through `Source32` are used. Until those files are in a tagged
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release, the full URL specified in the RPM spec file will not work. You can get
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them from the git repository where you retrieved this file.
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Sources 100+ are for files that are not source tarballs and are not maintained
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in the bitcoin git repository. At present only an SVG version of the Bitcoin
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icon is used.
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## Patches
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In general, patches should be avoided. When a packager feels a patch is
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necessary, the packager should bring the problem to the attention of the bitcoin
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developers so that an official fix to the issue can make it into the next
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release.
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### Patch0 bitcoin-0.12.0-libressl.patch
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This patch is only needed if building against LibreSSL. LibreSSL is not the
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standard TLS library on most Linux distributions. The patch will likely not be
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needed when 0.12.1 is released, a proper fix is already in the Bitcoin git
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master branch.
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## BuildRequires
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The packages specified in the `BuildRequires` are specified according to the
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package naming convention currently used in CentOS 7 and EPEL for CentOS 7. You
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may need to change some of the package names for other distributions. This is
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most likely to be the case with the Qt packages.
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## BerkeleyDB
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The `build-unix.md` file recommends building against BerkeleyDB 4.8.30. Even if
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that is the version your Linux distribution ships with, it probably is a good
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idea to build Bitcoin Core against a static version of that library compiled
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according to the instructions in the `build-unix.md` file so that any changes
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the distribution may make in the future will not result in a problem for users.
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The problem that can exist, clients built against different versions of
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BerkeleyDB may not be able read each other's `wallet.dat` file which can make it
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difficult for a user to recover from backup in the event of a system failure.
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## Graphical User Interface and Qt Version
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The RPM spec file will by default build the GUI client linked against the Qt5
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libraries. If you wish instead to link against the Qt4 libraries you need to
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pass the switch `-D '_use_qt4 1'` at build time to the `rpmbuild` or `mock`
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command used to build the packages.
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If you would prefer not to build the GUI at all, you can pass the switch
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`-D '_no_gui 1'` to the `rpmbuild` or `mock` build command.
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## Desktop and KDE Files
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The desktop and KDE meta files are created in the spec file itself with the
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`cat` command. This is done to allow easy distribution specific changes without
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needing to use any patches. A specific time stamp is given to the files so that
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it does not they do not appear to have been updated every time the package is
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built. If you do make changes to them, you probably should update time stamp
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assigned to them in the `touch` command that specifies the time stamp.
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## SVG, PNG, and XPM Icons
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The `bitcoin.svg` file is from the source listed as `Source100`. It is used as
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the source for the PNG and XPM files. The generated PNG and XPM files are given
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the same time stamp as the source SVG file as a means of indicating they are
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derived from it.
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## Systemd
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This spec file assumes the target distribution uses systemd. That really only
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matters for the `bitcoin-server` package. At this point, most RPM based
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distributions that still receive vendor updates do in fact use systemd.
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The files to control the service are created in the RPM spec file itself using
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the `cat` command. This is done to make it easy to modify for other
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distributions that may implement things differently without needing to patch
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source. A specific time stamp is given to the files so that they do not appear
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to have been updated every time the package is built. If you do make changes to
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them, you probably should update the time stamp assigned to them in the `touch`
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command that specifies the time stamp.
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## SELinux
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The `bitcoin-server` package should have SELinux support. How to properly do
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that *may* vary by distribution and version of distribution.
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The SELinux stuff in this RPM spec file *should* be correct for CentOS, RHEL,
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and Fedora but it would be a good idea to review it before building the package
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on other distributions.
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## Tests
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The `%check` section takes a very long time to run. If your build system has a
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time limit for package build, you may need to make an exception for this
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package. On CentOS 7 the `%check` section completes successfully with both
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OpenSSL and LibreSSL, a failure really does mean something is wrong.
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## LibreSSL Build Notes
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To build against LibreSSL you will need to pass the switch
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`-D '_use_libressl 1'` to the `rpmbuild` or `mock` command or the spec file will
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want the OpenSSL development files.
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### LibreSSL and Boost
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LibreSSL (and some newer builds of OpenSSL) do not have support for SSLv3. This
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can cause issues with the Boost package if the Boost package has not been
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patched accordingly. On those distributions, you will either need to build
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Bitcoin-Core against OpenSSL or use a patched version of Boost in the build
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system.
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As SSLv3 is no longer safe, distributions that have not patched Boost to work
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with TLS libraries that do not support SSLv3 should have bug reports filed
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against the Boost package. This bug report has already been filed for RHEL 7 but
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it may need to be filed for other distributions.
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A patch for Boost: https://github.com/boostorg/asio/pull/23/files
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## ZeroMQ
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At this time, this RPM spec file does not support the ZeroMQ build options. A
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suitable version of ZeroMQ is not available for the platform this spec file was
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developed on (CentOS 7).
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## Legacy Credit
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This RPM spec file is largely based upon the work of Michael Hampton at
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[Ringing Liberty](https://www.ringingliberty.com/bitcoin/). He has been
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packaging Bitcoin for Fedora at least since 2012.
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Most of the differences between his packaging and this package are stylistic in
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nature. The major differences:
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1. He builds from a github tagged release rather than a release tarball. This
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should not result in different source code.
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2. He does not build BerkeleyDB but instead uses the BerkeleyDB provided by the
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Linux distribution. For the distributions he packages for, they currently all
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use the same version of BerkeleyDB so that difference is *probably* just
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academic.
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3. As of his 10.11.2 package he did not allow for building against LibreSSL,
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specifying a build without the Qt GUI, or specifying which version of the Qt
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libraries to use.
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4. I renamed the `bitcoin` package that contains the Qt GUI to `bitcoin-core` as
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that appears to be how the general population refers to it, in contrast to
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`bitcoin-xt` or `bitcoin-classic`. I wanted to make sure the general population
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knows what they are getting when installing the GUI package.
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As far as minor differences, I generally prefer to assign the file permissions
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in the `%files` portion of an RPM spec file rather than specifying the
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permissions of a file during `%install` and other minor things like that
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are largely just cosmetic.
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