DH_MAKESHLIBS(1)                  Debhelper                 DH_MAKESHLIBS(1)

NAME         top

       dh_makeshlibs - automatically create shlibs file and call

SYNOPSIS         top

       dh_makeshlibs [debhelper options] [-mmajor] [-V[dependencies]] [-n]
       [-Xitem] [-- params]

DESCRIPTION         top

       dh_makeshlibs is a debhelper program that automatically scans for
       shared libraries, and generates a shlibs file for the libraries it

       It will also ensure that ldconfig is invoked during install and
       removal when it finds shared libraries.  Since debhelper 9.20151004,
       this is done via a dpkg trigger.  In older versions of debhelper,
       dh_makeshlibs would generate a maintainer script for this purpose.

FILES         top

           Installs this file, if present, into the package as
           DEBIAN/shlibs.  If omitted, debhelper will generate a shlibs file
           automatically if it detects any libraries.

           Note in compat levels 9 and earlier, this file was installed by
           dh_installdeb(1) rather than dh_makeshlibs.

           These symbols files, if present, are passed to dpkg-gensymbols(1)
           to be processed and installed. Use the arch specific names if you
           need to provide different symbols files for different

OPTIONS         top

       -mmajor, --major=major
           Instead of trying to guess the major number of the library with
           objdump, use the major number specified after the -m parameter.
           This is much less useful than it used to be, back in the bad old
           days when this program looked at library filenames rather than
           using objdump.

       -V, -Vdependencies
       --version-info, --version-info=dependencies
           If a shlibs file is generated by this program, this option
           controls what version will be used in the dependency relation.

           In compat 12 and later, dh_makeshlibs defaults to
           -VUpstream-Version.  In compat 11 and earlier the default behaved
           like -VNone..

           The dh_makeshlibs tool can generate dependencies in three

               The dependency will be "packagename (>= packageversion)".
               Note that Upstream-Version is case-sensitive and must be
               written exactly as shown here.

               This is a conservative setting that always ensures that other
               packages' shared library dependencies are at least as tight
               as they need to be (unless the library is prone to changing
               ABI without updating the upstream version number).

               The flip side is that packages might end up with dependencies
               that are too tight in some cases (note a symbols file can
               mitigate this issue).  This is often of minor temporary
               inconvenience and usually a lot better than the fall out
               caused by forgetting to bump the dependency information.

               This explicit form was added in debhelper/11.3.  In previous
               versions, a -V without any dependency information was used
               instead (and that form still works)

               The dependency will be "packagename".  Note that None is
               case-sensitive and must be written exactly as shown here.

               This form is generally unsafe with the only exception being
               if upstream does not extend the ABI in any way.  However,
               most upstreams improve their interfaces over time and
               packagers are recommended to use -VUpstream-Version (or one
               of the other forms of -Vdependencies).

               Alternatively, this may be sufficient if (and only if) the
               package uses symbol versioning (see dpkg-gensymbols(1)) and
               does not build any udeb packages.  Note that symbols are not
               supported for udeb packages, which solely relies on shlibs
               for dependency handling.

               In this case, the value passed to -V will be used as a
               dependency relation.  The package-relation should generally
               be of the form "some-package-name (>= some-package-version)".
               Remember to include the package name.

               Note that debhelper will use the value as it is with no
               sanity checking or modification.  In rare special cases, this
               is needed to generate a dependency on a different package
               than the one containing the library.

           When choosing a value for this option, please keep mind that if
           the package provides a symbols file, then that it generally
           preferred over the shlibs file for regular .deb packages.  See
           dpkg-shlibdeps(1) for more information on this topic.

       -n, --no-scripts
           Do not add the "ldconfig" trigger even if it seems like the
           package might need it.  The option is called --no-scripts for
           historical reasons as dh_makeshlibs would previously generate
           maintainer scripts that called ldconfig.

       -Xitem, --exclude=item
           Exclude files that contain item anywhere in their filename or
           directory from being treated as shared libraries.

           Create an additional line for udebs in the shlibs file and use
           udeb as the package name for udebs to depend on instead of the
           regular library package.

       -- params
           Pass params to dpkg-gensymbols(1).

EXAMPLES         top

       dh_makeshlibs -VNone
           Assuming this is a package named libfoobar1, generates a shlibs
           file that looks something like:
            libfoobar 1 libfoobar1

       dh_makeshlibs -VUpstream-Version
           Assuming the current version of the package is 1.1-3, generates a
           shlibs file that looks something like:
            libfoobar 1 libfoobar1 (>= 1.1)

       dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
           Generates a shlibs file that looks something like:
             libfoobar 1 libfoobar1 (>= 1.0)

SEE ALSO         top


       This program is a part of debhelper.

AUTHOR         top

       Joey Hess <>

COLOPHON         top

       This page is part of the debhelper (helper programs for debian/rules)
       project.  Information about the project can be found at [unknown --
       if you know, please contact] If you have a bug
       report for this manual page, send it to  This
       page was obtained from the project's upstream Git repository
       ⟨⟩ on 2018-10-29.  (At
       that time, the date of the most recent commit that was found in the
       repository was 2018-10-28.)  If you discover any rendering problems
       in this HTML version of the page, or you believe there is a better or
       more up-to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not part
       of the original manual page), send a mail to

11.5                             2018-10-28                 DH_MAKESHLIBS(1)