dpkg-buildpackage - build binary or source packages from sources
dpkg-buildpackage [option...]
dpkg-buildpackage is a program that automates the process of building a Debian package. It consists of the following steps: 1. It prepares the build environment by setting various environment variables (see ENVIRONMENT), runs the init hook, and calls dpkg-source --before-build (unless -T or --target has been used). 2. It checks that the build-dependencies and build-conflicts are satisfied (unless -d or --no-check-builddeps is specified). 3. If a specific target has been selected with the -T or --target option, it calls that target and stops here. Otherwise it runs the preclean hook and calls fakeroot debian/rules clean to clean the build-tree (unless -nc or --no-pre-clean is specified). 4. It runs the source hook and calls dpkg-source -b to generate the source package (if a source build has been requested with --build or equivalent options). 5. It runs the build hook and calls debian/rules build-target, then runs the binary hook followed by fakeroot debian/rules binary-target (unless a source-only build has been requested with --build=source or equivalent options). Note that build-target and binary-target are either build and binary (default case, or if an any and all build has been requested with --build or equivalent options), or build-arch and binary-arch (if an any and not all build has been requested with --build or equivalent options), or build-indep and binary-indep (if an all and not any build has been requested with --build or equivalent options). 6. It runs the changes hook and calls dpkg-genchanges to generate a .changes file. Many dpkg-buildpackage options are forwarded to dpkg-genchanges. 7. It runs the postclean hook and if -tc or --post-clean is specified, it will call fakeroot debian/rules clean again. 8. It calls dpkg-source --after-build. 9. It runs the check hook and calls a package checker for the .changes file (if a command is specified in DEB_CHECK_COMMAND or with --check-command). 10. It runs the sign hook and calls gpg2 or gpg to sign the .dsc file (if any, unless -us or --unsigned-source is specified or on UNRELEASED builds), and the .changes file (unless -uc or --unsigned-changes is specified or on UNRELEASED builds). 11. It runs the done hook.
All long options can be specified both on the command line and in the dpkg-buildpackage system and user configuration files. Each line in the configuration file is either an option (exactly the same as the command line option but without leading hyphens) or a comment (if it starts with a '#'). --build=type Specifies the build type from a comma-separated list of components (since dpkg 1.18.5). Passed to dpkg-genchanges. The allowed values are: source Builds the source package. Note: when using this value standalone and if what you want is simply to (re-)build the source package, using dpkg-source is always better as it does not require any build dependencies to be installed to be able to call the clean target. any Builds the architecture specific binary packages. all Builds the architecture independent binary packages. binary Builds the architecture specific and independent binary packages. This is an alias for any,all. full Builds everything. This is an alias for source,any,all, and the same as the default case when no build option is specified. -g Equivalent to --build=source,all (since dpkg 1.17.11). -G Equivalent to --build=source,any (since dpkg 1.17.11). -b Equivalent to --build=binary or --build=any,all. -B Equivalent to --build=any. -A Equivalent to --build=all. -S Equivalent to --build=source. -F Equivalent to --build=full, --build=source,binary or --build=source,any,all (since dpkg 1.15.8). --target=target --target target -T, --rules-target=target Calls debian/rules target after having setup the build environment and stops the package build process here (since dpkg 1.15.0, long option since dpkg 1.18.8). If --as-root is also given, then the command is executed as root (see --root-command). Note that known targets that are required to be run as root do not need this option (i.e. the clean, binary, binary-arch and binary-indep targets). --as-root Only meaningful together with --target (since dpkg 1.15.0). Requires that the target be run with root rights. -si -sa -sd -vversion -Cchanges-description -m, --release-by=maintainer-address -e, --build-by=maintainer-address Passed unchanged to dpkg-genchanges. See its manual page. -a, --host-arch architecture Specify the Debian architecture we build for (long option since dpkg 1.17.17). The architecture of the machine we build on is determined automatically, and is also the default for the host machine. -t, --host-type gnu-system-type Specify the GNU system type we build for (long option since dpkg 1.17.17). It can be used in place of --host-arch or as a complement to override the default GNU system type of the host Debian architecture. --target-arch architecture Specify the Debian architecture the binaries built will build for (since dpkg 1.17.17). The default value is the host machine. --target-type gnu-system-type Specify the GNU system type the binaries built will build for (since dpkg 1.17.17). It can be used in place of --target-arch or as a complement to override the default GNU system type of the target Debian architecture. -P, --build-profiles=profile[,...] Specify the profile(s) we build, as a comma-separated list (since dpkg 1.17.2, long option since dpkg 1.18.8). The default behavior is to build for no specific profile. Also sets them (as a space separated list) as the DEB_BUILD_PROFILES environment variable which allows, for example, debian/rules files to use this information for conditional builds. -j, --jobs[=jobs|auto] Number of jobs allowed to be run simultaneously, number of jobs matching the number of online processors if auto is specified (since dpkg 1.17.10), or unlimited number if jobs is not specified, equivalent to the make(1) option of the same name (since dpkg 1.14.7, long option since dpkg 1.18.8). Will add itself to the MAKEFLAGS environment variable, which should cause all subsequent make invocations to inherit the option, thus forcing the parallel setting on the packaging (and possibly the upstream build system if that uses make) regardless of their support for parallel builds, which might cause build failures. Also adds parallel=jobs or parallel to the DEB_BUILD_OPTIONS environment variable which allows debian/rules files to use this information for their own purposes. The -j value will override the parallel=jobs or parallel option in the DEB_BUILD_OPTIONS environment variable. Note that the auto value will get replaced by the actual number of currently active processors, and as such will not get propagated to any child process. If the number of online processors cannot be inferred then the code will fallback to using an unlimited number. -J, --jobs-try[=jobs|auto] This option (since dpkg 1.18.2, long option since dpkg 1.18.8) is equivalent to the -j option except that it does not set the MAKEFLAGS environment variable, and as such it is safer to use with any package including those that are not parallel-build safe. -D, --check-builddeps Check build dependencies and conflicts; abort if unsatisfied (long option since dpkg 1.18.8). This is the default behavior. -d, --no-check-builddeps Do not check build dependencies and conflicts (long option since dpkg 1.18.8). --ignore-builtin-builddeps Do not check built-in build dependencies and conflicts (since dpkg 1.18.2). These are the distribution specific implicit build dependencies usually required in a build environment, the so called Build-Essential package set. -nc, --no-pre-clean Do not clean the source tree (long option since dpkg 1.18.8). Implies -b if nothing else has been selected among -F, -g, -G, -B, -A or -S. Implies -d with -S (since dpkg 1.18.0). --pre-clean Clean the source tree before building (since dpkg 1.18.8). -tc, --post-clean Clean the source tree (using gain-root-command debian/rules clean) after the package has been built (long option since dpkg 1.18.8). -r, --root-command=gain-root-command When dpkg-buildpackage needs to execute part of the build process as root, it prefixes the command it executes with gain- root-command if one has been specified (long option since dpkg 1.18.8). Otherwise, if none has been specified, fakeroot will be used by default, if the command is present. gain-root- command should start with the name of a program on the PATH and will get as arguments the name of the real command to run and the arguments it should take. gain-root-command can include parameters (they must be space-separated) but no shell metacharacters. gain-root-command might typically be fakeroot, sudo, super or really. su is not suitable, since it can only invoke the user's shell with -c instead of passing arguments individually to the command to be run. -R, --rules-file=rules-file Building a Debian package usually involves invoking debian/rules as a command with several standard parameters (since dpkg 1.14.17, long option since dpkg 1.18.8). With this option it's possible to use another program invocation to build the package (it can include space separated parameters). Alternatively it can be used to execute the standard rules file with another make program (for example by using /usr/local/bin/make -f debian/rules as rules-file). --check-command=check-command Command used to check the .changes file itself and any artifact built referenced in the file (since dpkg 1.17.6). The command should take the .changes pathname as an argument. This command will usually be lintian. --check-option=opt Pass option opt to the check-command specified with DEB_CHECK_COMMAND or --check-command (since dpkg 1.17.6). Can be used multiple times. --hook-hook-name=hook-command Set the specified shell code hook-command as the hook hook-name, which will run at the times specified in the run steps (since dpkg 1.17.6). The hooks will always be executed even if the following action is not performed (except for the binary hook). Note: Hooks can affect the build process, and cause build failures if their commands fail, so watch out for unintended consequences. The current hook-name supported are: init preclean source build binary changes postclean check sign done The hook-command supports the following substitution format string, which will get applied to it before execution: %% A single % character. %a A boolean value (0 or 1), representing whether the following action is being performed. %p The source package name. %v The source package version. %s The source package version (without the epoch). %u The upstream version. -p, --sign-command=sign-command When dpkg-buildpackage needs to execute GPG to sign a source control (.dsc) file or a .changes file it will run sign-command (searching the PATH if necessary) instead of gpg2 or gpg (long option since dpkg 1.18.8). sign-command will get all the arguments that gpg2 or gpg would have gotten. sign-command should not contain spaces or any other shell metacharacters. -k, --sign-key=key-id Specify a key-ID to use when signing packages (long option since dpkg 1.18.8). -us, --unsigned-source Do not sign the source package (long option since dpkg 1.18.8). -uc, --unsigned-changes Do not sign the .changes file (long option since dpkg 1.18.8). --force-sign Force the signing of the resulting files (since dpkg 1.17.0), regardless of -us, --unsigned-source, -uc, --unsigned-changes or other internal heuristics. -sn -ss -sA -sk -su -sr -sK -sU -sR -i, --diff-ignore[=regex] -I, --tar-ignore[=pattern] -z, --compression-level=level -Z, --compression=compressor Passed unchanged to dpkg-source. See its manual page. --source-option=opt Pass option opt to dpkg-source (since dpkg 1.15.6). Can be used multiple times. --changes-option=opt Pass option opt to dpkg-genchanges (since dpkg 1.15.6). Can be used multiple times. --admindir=dir --admindir dir Change the location of the dpkg database (since dpkg 1.14.0). The default location is /var/lib/dpkg. -?, --help Show the usage message and exit. --version Show the version and exit.
External environment DEB_CHECK_COMMAND If set, it will be used as the command to check the .changes file (since dpkg 1.17.6). Overridden by the --check-command option. DEB_SIGN_KEYID If set, it will be used to sign the .changes and .dsc files (since dpkg 1.17.2). Overridden by the --sign-key option. DEB_BUILD_OPTIONS If set, and containing nocheck the DEB_CHECK_COMMAND variable will be ignored. DEB_BUILD_PROFILES If set, it will be used as the active build profile(s) for the package being built (since dpkg 1.17.2). It is a space separated list of profile names. Overridden by the -P option. DPKG_COLORS Sets the color mode (since dpkg 1.18.5). The currently accepted values are: auto, always and never (default). Internal environment Even if dpkg-buildpackage exports some variables, debian/rules should not rely on their presence and should instead use the respective interface to retrieve the needed values, because that file is the main entry point to build packages and running it standalone should be supported. DEB_BUILD_* DEB_HOST_* DEB_TARGET_* dpkg-architecture is called with the -a and -t parameters forwarded. Any variable that is output by its -s option is integrated in the build environment. SOURCE_DATE_EPOCH This variable is set to the Unix timestamp since the epoch of the latest entry in debian/changelog, if it is not already defined.
/etc/dpkg/buildpackage.conf System wide configuration file $XDG_CONFIG_HOME/dpkg/buildpackage.conf or $HOME/.config/dpkg/buildpackage.conf User configuration file.
Compiler flags are no longer exported Between dpkg 1.14.17 and 1.16.1, dpkg-buildpackage exported compiler flags (CFLAGS, CXXFLAGS, FFLAGS, CPPFLAGS and LDFLAGS) with values as returned by dpkg-buildflags. This is no longer the case. Default build targets dpkg-buildpackage is using the build-arch and build-indep targets since dpkg 1.16.2. Those targets are thus mandatory. But to avoid breakages of existing packages, and ease the transition, if the source package does not build both architecture independent and dependent binary packages (since dpkg 1.18.8) it will fallback to use the build target if make -f debian/rules -qn build-target returns 2 as exit code.
It should be possible to specify spaces and shell metacharacters and initial arguments for gain-root-command and sign-command.
dpkg-source(1), dpkg-architecture(1), dpkg-buildflags(1), dpkg-genchanges(1), fakeroot(1), lintian(1), gpg2(1), gpg(1).
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.