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diff --git a/man/dpkg-buildpackage.pod b/man/dpkg-buildpackage.pod new file mode 100644 index 0000000..a145d12 --- /dev/null +++ b/man/dpkg-buildpackage.pod @@ -0,0 +1,919 @@ +# dpkg manual page - dpkg-buildpackage(1) +# +# Copyright © 1995-1996 Ian Jackson +# Copyright © 2000 Wichert Akkerman <wakkerma@debian.org> +# Copyright © 2007-2008 Frank Lichtenheld <djpig@debian.org> +# Copyright © 2008-2015 Guillem Jover <guillem@debian.org> +# Copyright © 2008-2012 Raphaël Hertzog <hertzog@debian.org> +# +# This is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + +=encoding utf8 + +=head1 NAME + +dpkg-buildpackage - build binary or source packages from sources + +=head1 SYNOPSIS + +B<dpkg-buildpackage> +[I<option>...] + +=head1 DESCRIPTION + +B<dpkg-buildpackage> +is a program that automates the process of building a Debian package. +It +consists of the following steps: + +=over + +=item B<1.> + +It runs the B<preinit> hook before reading any source file. +It prepares the build environment by setting various environment +variables (see B<ENVIRONMENT>), runs the B<init> hook, and calls +B<dpkg-source --before-build> (unless B<-T> or B<--target> +has been used). + +=item B<2.> + +It checks that the build-dependencies and build-conflicts +are satisfied (unless B<-d> or B<--no-check-builddeps> is specified). + +=item B<3.> + +If one or more specific targets have been selected with the B<-T> or +B<--target> option, it calls those targets and stops here. +Otherwise it +runs the B<preclean> hook and calls B<fakeroot debian/rules clean> to +clean the build-tree (unless B<-nc> or B<--no-pre-clean> +is specified). + +=item B<4.> + +It runs the B<source> hook and calls B<dpkg-source -b> to generate +the source package (if a B<source> build has been requested with +B<--build> or equivalent options). + +=item B<5.> + +It runs the B<build> hook and calls B<debian/rules> I<build-target>, +then runs the B<binary> hook followed by B<fakeroot debian/rules> +I<binary-target> (unless a source-only build has been requested with +B<--build=source> or equivalent options). +Note that I<build-target> and I<binary-target> are either B<build> +and B<binary> (default case, or if an B<any> and B<all> build +has been requested with B<--build> or equivalent options), or +B<build-arch> and B<binary-arch> (if an B<any> and not B<all> +build has been requested with B<--build> or equivalent options), or +B<build-indep> and B<binary-indep> (if an B<all> and not B<any> +build has been requested with B<--build> or equivalent options). + +=item B<6.> + +It runs the B<buildinfo> +hook and calls B<dpkg-genbuildinfo> to generate a B<.buildinfo> file. +Several B<dpkg-buildpackage> options are forwarded to +B<dpkg-genbuildinfo>. + +=item B<7.> + +It runs the B<changes> hook and calls B<dpkg-genchanges> to +generate a B<.changes> file. +The name of the B<.changes> file will depend on the type of build and +will be as specific as necessary but not more; the name will be: + +=over + +=item I<source-name>B<_>I<binary-version>B<_>I<arch>B<.changes> + +for a build that includes B<any> + +=item I<source-name>B<_>I<binary-version>B<_>B<all.changes> + +otherwise for a build that includes B<all> + +=item I<source-name>B<_>I<source-version>B<_>B<source.changes>. + +otherwise for a build that includes B<source> + +=back + +Many B<dpkg-buildpackage> options are forwarded to +B<dpkg-genchanges>. + +=item B<8.> + +It runs the B<postclean> hook and if B<-tc> or B<--post-clean> +is specified, it will call B<fakeroot debian/rules clean> again. + +=item B<9.> + +It calls B<dpkg-source --after-build>. + +=item B<10.> + +It runs the B<check> hook and calls a package checker for the +B<.changes> file (if a command is specified in B<DEB_CHECK_COMMAND> or +with B<--check-command>). + +=item B<11.> + +It runs the B<sign> hook and signs using the OpenPGP backend (as long as it +is not an UNRELEASED build, or B<--no-sign> is specified) to sign the +B<.dsc> file (if any, unless +B<-us> or B<--unsigned-source> is specified), the B<.buildinfo> +file (unless B<-ui>, B<--unsigned-buildinfo>, +B<-uc> or B<--unsigned-changes> is specified) and +the B<.changes> file (unless B<-uc> or B<--unsigned-changes> +is specified). + +=item B<12.> + +It runs the B<done> hook. + +=back + +=head1 OPTIONS + +All long options can be specified both on the command line and in the +B<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 ‘B<#>’). + +=over + +=item B<--build=>I<type> + +Specifies the build I<type> from a comma-separated list of components +(since dpkg 1.18.5). +All the specified components get combined to select the single build type +to use, which implies a single build run with a single F<.changes> file +generated. +Passed to B<dpkg-genchanges>. + +The allowed values are: + +=over + +=item B<source> + +Builds the source package. + +B<Note>: When using this value standalone and if what you want is simply to +(re-)build the source package from a clean source tree, using +B<dpkg-source> directly is always a better option as it does not +require any build dependencies to be installed which are otherwise +needed to be able to call the B<clean> target. + +=item B<any> + +Builds the architecture specific binary packages. + +=item B<all> + +Builds the architecture independent binary packages. + +=item B<binary> + +Builds the architecture specific and independent binary packages. +This is an alias for B<any,all>. + +=item B<full> + +Builds everything. +This is an alias for B<source,any,all>, and the same as the default +case when no build option is specified. + +=back + +=item B<-g> + +Equivalent to B<--build=source,all> (since dpkg 1.17.11). + +=item B<-G> + +Equivalent to B<--build=source,any> (since dpkg 1.17.11). + +=item B<-b> + +Equivalent to B<--build=binary> or B<--build=any,all>. + +=item B<-B> + +Equivalent to B<--build=any>. + +=item B<-A> + +Equivalent to B<--build=all>. + +=item B<-S> + +Equivalent to B<--build=source>. + +=item B<-F> + +Equivalent to B<--build=full>, B<--build=source,binary> or +B<--build=source,any,all> (since dpkg 1.15.8). + +=item B<--target=>I<target>[,...] + +=item B<--target> I<target>[,...] + +=item B<-T>, B<--rules-target=>I<target>[,...] + +Calls B<debian/rules> I<target> once per target specified, after +having setup the build environment (except for calling +B<dpkg-source --before-build>), and stops the package build process +here (since dpkg 1.15.0, long option since dpkg 1.18.8, multi-target +support since dpkg 1.18.16). +If B<--as-root> is also given, then the command is executed +as root (see B<--root-command>). +Note that known targets that are required to +be run as root do not need this option (i.e. the B<clean>, B<binary>, +B<binary-arch> and B<binary-indep> targets). + +=item B<--as-root> + +Only meaningful together with B<--target> (since dpkg 1.15.0). +Requires that the target be run with root rights. + +=item B<-si> + +=item B<-sa> + +=item B<-sd> + +=item B<-v>I<version> + +=item B<-C>I<changes-description> + +=item B<-m>I<maintainer-address> + +=item B<-e>I<maintainer-address> + +Passed unchanged to B<dpkg-genchanges>. +See its manual page. + +=item B<--build-by=>I<maintainer-address> + +=item B<--source-by=>I<maintainer-address> (since dpkg 1.21.10) + +Pass as B<-m> to B<dpkg-genchanges>. +See its manual page. + +=item B<--release-by=>I<maintainer-address> + +=item B<--changed-by=>I<maintainer-address> (since dpkg 1.21.10) + +Pass as B<-e> to B<dpkg-genchanges>. +See its manual page. + +=item B<-a>, B<--host-arch> I<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. + +=item B<-t>, B<--host-type> I<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 B<--host-arch> or as a complement to override the default GNU system type +of the host Debian architecture. + +=item B<--target-arch> I<architecture> + +Specify the Debian architecture the binaries built will build for +(since dpkg 1.17.17). +The default value is the host machine. + +=item B<--target-type> I<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 B<--target-arch> or as a complement to override the +default GNU system type of the target Debian architecture. + +=item B<-P>, B<--build-profiles=>I<profile>[B<,>...] + +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 B<DEB_BUILD_PROFILES> environment variable which +allows, for example, B<debian/rules> files to use this information for +conditional builds. + +=item B<-j>, B<--jobs>[=I<jobs>|B<auto>] + +Specifies the number of jobs allowed to be run simultaneously +(since dpkg 1.14.7, long option since dpkg 1.18.8). +The number of jobs matching the number of online processors if B<auto> is +specified (since dpkg 1.17.10), or unlimited number if I<jobs> is not +specified. +The default behavior is B<auto> (since dpkg 1.18.11) in non-forced mode +(since dpkg 1.21.10), and as such it is always safer to use with any +package including those that are not parallel-build safe. +Setting the number of jobs to B<1> will restore serial execution. + +Will add B<parallel=>I<jobs> or B<parallel> to the B<DEB_BUILD_OPTIONS> +environment variable which allows debian/rules files to opt-in to use this +information for their own purposes. +The I<jobs> value will override the B<parallel=>I<jobs> or +B<parallel> option in the B<DEB_BUILD_OPTIONS> environment variable. +Note that the B<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 serial execution (since dpkg 1.18.15), +although this should only happen on exotic and unsupported systems. + +=item B<-J>, B<--jobs-try>[=I<jobs>|B<auto>] + +This option (since dpkg 1.18.2, long option since dpkg 1.18.8) is equivalent +to the B<-j> above. + +Since the behavior for B<-j> changed in dpkg 1.21.10 to the opt-in mode, +you can use this option instead if you need to guarantee semantics across +dpkg release series. + +=item B<--jobs-force>[=I<jobs>|B<auto>] + +This option (since dpkg 1.21.10) is equivalent to the B<--jobs> option +except that it will enable forced parallel mode, by adding the B<make> B<-j> +option with the computed number of parallel jobs to the B<MAKEFLAGS> +environment variable. + +This 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 L<make(1)>) regardless of their support +for parallel builds, which might cause build failures. + +B<Note>: Any Makefile that is not parallel-safe should be considered to be buggy. +These should either be made parallel-safe, or marked as not being safe with +the L<make(1)> B<.NOTPARALLEL> target. + +=item B<-D>, B<--check-builddeps> + +Check build dependencies and conflicts; abort if unsatisfied (long option +since dpkg 1.18.8). +This is the default behavior. + +=item B<-d>, B<--no-check-builddeps> + +Do not check build dependencies and conflicts (long option since dpkg 1.18.8). + +=item B<--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. + +=item B<--rules-requires-root> + +Do not honor the B<Rules-Requires-Root> field, falling back to its +legacy default value (since dpkg 1.19.1). + +=item B<-nc>, B<--no-pre-clean> + +Do not clean the source tree before building (long option since dpkg 1.18.8). +Implies B<-b> if nothing else has been selected among B<-F>, +B<-g>, B<-G>, B<-B>, B<-A> or B<-S>. +Implies B<-d> with B<-S> (since dpkg 1.18.0). + +=item B<--pre-clean> + +Clean the source tree before building (since dpkg 1.18.8). +This is the default behavior. + +=item B<-tc>, B<--post-clean> + +Clean the source tree (using +I<gain-root-command> +B<debian/rules clean>) +after the package has been built (long option since dpkg 1.18.8). + +=item B<--no-post-clean> + +Do not clean the source tree after the package has been built +(since dpkg 1.19.1). +This is the default behavior. + +=item B<--sanitize-env> + +Sanitize the build environment (since dpkg 1.20.0). +This will reset or remove environment variables, umask, and any other process +attributes that might otherwise adversely affect the build of packages. +Because the official entry point to build packages is B<debian/rules>, +packages cannot rely on these settings being in place, and thus should work +even when they are not. +What to sanitize is vendor specific. + +=item B<-r>, B<--root-command=>I<gain-root-command> + +When +B<dpkg-buildpackage> +needs to execute part of the build process as root, it prefixes the +command it executes with +I<gain-root-command> +if one has been specified (long option since dpkg 1.18.8). +Otherwise, if none has been specified, +B<fakeroot> will be used by default, if the command is present. +I<gain-root-command> +should start with the name of a program on the +B<PATH> +and will get as arguments the name of the real command to run and the +arguments it should take. +I<gain-root-command> +can include parameters (they must be space-separated) but no shell +metacharacters. +I<gain-root-command> +might typically be +B<fakeroot>, B<sudo>, B<super> or B<really>. +B<su> +is not suitable, since it can only invoke the user's shell with +B<-c> +instead of passing arguments individually to the command to be run. + +=item B<-R>, B<--rules-file=>I<rules-file> + +Building a Debian package usually involves invoking +B<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 +B</usr/local/bin/make -f debian/rules> +as I<rules-file>). + +=item B<--check-command=>I<check-command> + +Command used to check the B<.changes> file itself and any artifact built +referenced in the file (since dpkg 1.17.6). +The command should take the B<.changes> pathname +as an argument. +This command will usually be B<lintian>. + +=item B<--check-option=>I<opt> + +Pass option I<opt> to the I<check-command> specified with +B<DEB_CHECK_COMMAND> or B<--check-command> (since dpkg 1.17.6). +Can be used multiple times. + +=item B<--hook->I<hook-name>B<=>I<hook-command> + +Set the specified shell code I<hook-command> as the hook I<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 B<binary> hook). +All the hooks will run in the unpacked source directory. + +Some hooks can receive addition information through environment variables +(since dpkg 1.22.0). +All hooks get the hook name in the B<DPKG_BUILDPACKAGE_HOOK_NAME> environment +variable (since dpkg 1.22.0). + +B<Note>: Hooks can affect the build process, and cause build failures if +their commands fail, so watch out for unintended consequences. + +The current I<hook-name> supported are: + +=over + +=item B<preinit> + +=item B<init> + +=item B<preclean> + +=item B<source> + +Gets B<DPKG_BUILDPACKAGE_HOOK_SOURCE_OPTIONS> with the space-separated lists +of options that will passed to the B<dpkg-source> call. + +=item B<build> + +Gets B<DPKG_BUILDPACKAGE_HOOK_BUILD_TARGET> with the name of the +B<debian/rules> build target called, but only if called. + +=item B<binary> + +Gets B<DPKG_BUILDPACKAGE_HOOK_BINARY_TARGET> with the name of the +B<debian/rules> binary target called, but only if called. + +=item B<buildinfo> + +Gets B<DPKG_BUILDPACKAGE_HOOK_BUILDINFO_OPTIONS> with the space-separated lists +of options that will passed to the B<dpkg-genbuildinfo> call. + +=item B<changes> + +Gets B<DPKG_BUILDPACKAGE_HOOK_CHANGES_OPTIONS> with the space-separated lists +of options that will passed to the B<dpkg-genchanges> call. + +=item B<postclean> + +=item B<check> + +Gets B<DPKG_BUILDPACKAGE_HOOK_CHECK_OPTIONS> with the space-separated lists +of options that will passed to the check command call. + +=item B<sign> + +=item B<done> + +=back + +The I<hook-command> supports the following substitution format string, +which will get applied to it before execution: + +=over + +=item B<%%> + +A single % character. + +=item B<%a> + +A boolean value (0 or 1), representing whether the following action is +being performed. + +=item B<%p> + +The source package name. + +=item B<%v> + +The source package version. + +=item B<%s> + +The source package version (without the epoch). + +=item B<%u> + +The upstream version. + +=back + +=item B<--buildinfo-file=>I<filename> + +Set the I<filename> for the generated B<.buildinfo> file (since dpkg 1.21.0). + +=item B<--buildinfo-option=>I<opt> + +Pass option I<opt> to B<dpkg-genbuildinfo> (since dpkg 1.18.11). +Can be used multiple times. + +=item B<--sign-backend=>I<sign-backend> + +Specify an OpenPGP backend interface to use when invoking the I<sign-command> +(since dpkg 1.21.10). + +The default is B<auto>, where the best current backend available will be used. +The specific OpenPGP backends supported in order of preference are: + +=over 4 + +=item B<sop> + +(any conforming Stateless OpenPGP implementation) + +=item B<sq> + +(from Sequoia-PGP) + +=item B<gpg> + +(from GnuPG) + +=back + +=item B<-p>, B<--sign-command=>I<sign-command> + +When B<dpkg-buildpackage> needs to execute an OpenPGP backend command to +sign a source control (B<.dsc>) file, a B<.buildinfo> file or a B<.changes> +file it will run +I<sign-command> (searching the B<PATH> if necessary) instead of the +default or auto-detected backend command (long option since dpkg 1.18.8). +I<sign-command> will get all the backend specific arguments according to +the B<--sign-backend> selected. +I<sign-command> should not contain spaces or any other shell metacharacters. + +=item B<-k>, B<--sign-keyid=>I<key-id> + +=item B<--sign-key=>I<key-id> + +Specify an OpenPGP key-ID (either a fingerprint or a user-ID) for the +secret key to use when signing packages (B<--sign-key> since dpkg 1.18.8, +B<--sign-keyid> since dpkg 1.21.10). + +=item B<--sign-keyfile=>I<key-file> + +Specify an OpenPGP I<key-file> containing the secret key to use when signing +packages (since dpkg 1.21.10). + +B<Note>: For security reasons the I<key-file> is best kept locked with a +password. + +=item B<-us>, B<--unsigned-source> + +Do not sign the source package (long option since dpkg 1.18.8). + +=item B<-ui>, B<--unsigned-buildinfo> + +Do not sign the B<.buildinfo> file (since dpkg 1.18.19). + +=item B<-uc>, B<--unsigned-changes> + +Do not sign the B<.buildinfo> and B<.changes> files +(long option since dpkg 1.18.8). + +=item B<--no-sign> + +Do not sign any file, this includes the source package, the B<.buildinfo> +file and the B<.changes> file (since dpkg 1.18.20). + +=item B<--force-sign> + +Force the signing of the resulting files (since dpkg 1.17.0), regardless of +B<-us>, B<--unsigned-source>, +B<-ui>, B<--unsigned-buildinfo>, +B<-uc>, B<--unsigned-changes> +or other internal heuristics. + +=item B<-sn> + +=item B<-ss> + +=item B<-sA> + +=item B<-sk> + +=item B<-su> + +=item B<-sr> + +=item B<-sK> + +=item B<-sU> + +=item B<-sR> + +=item B<-i>, B<--diff-ignore>[=I<regex>] + +=item B<-I>, B<--tar-ignore>[=I<pattern>] + +=item B<-z>, B<--compression-level=>I<level> + +=item B<-Z>, B<--compression=>I<compressor> + +Passed unchanged to B<dpkg-source>. +See its manual page. + +=item B<--source-option=>I<opt> + +Pass option I<opt> to B<dpkg-source> (since dpkg 1.15.6). +Can be used multiple times. + +=item B<--changes-file=>I<filename> + +Set the I<filename> for the generated B<.changes> file (since dpkg 1.21.0). + +=item B<--changes-option=>I<opt> + +Pass option I<opt> to B<dpkg-genchanges> (since dpkg 1.15.6). +Can be used multiple times. + +=item B<--admindir=>I<dir> + +=item B<--admindir> I<dir> + +Change the location of the B<dpkg> database (since dpkg 1.14.0). +The default location is I<%ADMINDIR%>. + +=item B<-?>, B<--help> + +Show the usage message and exit. + +=item B<--version> + +Show the version and exit. + +=back + +=head1 ENVIRONMENT + +=head2 External environment + +=over + +=item B<DEB_CHECK_COMMAND> + +If set, it will be used as the command to check the B<.changes> file +(since dpkg 1.17.6). +Overridden by the B<--check-command> option. + +=item B<DEB_SIGN_KEYID> + +If set, it will be used to sign the B<.changes>, B<.buildinfo> and B<.dsc> +files (since dpkg 1.17.2). +Overridden by the B<--sign-key> option. + +=item B<DEB_SIGN_KEYFILE> + +If set, it will be used to sign the B<.changes>, B<.buildinfo> and B<.dsc> +files (since dpkg 1.21.10). +Overridden by the B<--sign-keyfile> option. + +=item B<DEB_BUILD_OPTIONS> + +If set, it will contain a space-separated list of options that affect +the behavior of some dpkg tools involved in package building, +and might affect the package build process if the code in F<debian/rules> +honors them. + +The following are the options known and supported by dpkg tools, +other options honored by F<debian/rules> might be defined by distribution +specific policies. + +=over + +=item B<parallel=>I<N> + +The F<debian/rules> in the packaging might use this option to set up +the build process to use I<N> parallel jobs. +It is overridden by the B<--jobs> and B<--jobs-force> options. + +=item B<nocheck> + +B<dpkg-buildpackage> will ignore the B<DEB_CHECK_COMMAND> variable. +The F<debian/rules> in the packaging is not expected to run test suites +during the build. + +=item B<noopt> + +If F<debian/rules> calls B<dpkg-buildflags> to set up the build flags, +those will be set to not enable any optimizations. + +=item B<nostrip> + +The F<debian/rules> in the packaging should ensure that objects do not get +the debugging information stripped. +If F<debian/rules> includes the B<mk/buildtools.mk> make fragment the +B<STRIP> make variable will respect this option. + +=item B<terse> + +B<dpkg-buildpackage> will append the B<--no-print-directory> L<make(1)> +flag to the B<MAKEFLAGS> environment variable. +The F<debian/rules> in the packaging should reduce verbosity, while not +being completely quiet. + +=back + +=item B<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 B<-P> option. + +=item B<DPKG_COLORS> + +Sets the color mode (since dpkg 1.18.5). +The currently accepted values are: B<auto> (default), B<always> and +B<never>. + +=item B<DPKG_NLS> + +If set, it will be used to decide whether to activate Native Language Support, +also known as internationalization (or i18n) support (since dpkg 1.19.0). +The accepted values are: B<0> and B<1> (default). + +=back + +=head2 Internal environment + +Even if B<dpkg-buildpackage> exports some variables, B<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. + +=over + +=item B<DEB_BUILD_*> + +=item B<DEB_HOST_*> + +=item B<DEB_TARGET_*> + +B<dpkg-architecture> is called with the B<-a> and B<-t> +parameters forwarded. +Any variable that is output by its B<-s> +option is integrated in the build environment. + +=item B<DEB_RULES_REQUIRES_ROOT> + +This variable is set to the value obtained from the B<Rules-Requires-Root> +field, the dpkg-build-api level or from the command-line. +When set, it will be a valid value for the B<Rules-Requires-Root> field. +It is used to notify B<debian/rules> whether the B<rootless-builds.txt> +specification is supported. + +=item B<DEB_GAIN_ROOT_CMD> + +This variable is set to I<gain-root-command> when the field +B<Rules-Requires-Root> is set to a value different to B<no> and +B<binary-targets>. + +=item B<SOURCE_DATE_EPOCH> + +This variable is set to the Unix timestamp since the epoch of the +latest entry in I<debian/changelog>, if it is not already defined. + +=back + +=head1 FILES + +=over + +=item I<%PKGCONFDIR%/buildpackage.conf> + +System wide configuration file + +=item I<$XDG_CONFIG_HOME/dpkg/buildpackage.conf> or + +=item I<$HOME/.config/dpkg/buildpackage.conf> + +User configuration file. + +=back + +=head1 NOTES + +=head2 Compiler flags are no longer exported + +Between dpkg 1.14.17 and 1.16.1, B<dpkg-buildpackage> +exported compiler flags (B<CFLAGS>, B<CXXFLAGS>, B<FFLAGS>, +B<CPPFLAGS> and B<LDFLAGS>) with values as returned +by B<dpkg-buildflags>. +This is no longer the case. + +=head2 Default build targets + +B<dpkg-buildpackage> is using the B<build-arch> and +B<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 B<build> target if B<make -f debian/rules -qn> +I<build-target> returns 2 as exit code. + +=head1 SECURITY + +Building binary or source packages should only be performed over trusted +source data. + +=head1 BUGS + +It should be possible to specify spaces and shell metacharacters +and initial arguments for +I<gain-root-command> and I<sign-command>. + +=head1 SEE ALSO + +I<%PKGDOCDIR%/spec/rootless-builds.txt>, +L<dpkg-source(1)>, +L<dpkg-architecture(1)>, +L<dpkg-buildflags(1)>, +L<dpkg-genbuildinfo(1)>, +L<dpkg-genchanges(1)>, +L<fakeroot(1)>, +L<lintian(1)>, +L<https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/>, +L<sq(1)>, +L<gpg(1)>. |