Section: Debhelper (1)
Updated: 2016-07-19
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dh_makeshlibs - automatically create shlibs file and call dpkg-gensymbols  


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


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

It also adds a call to ldconfig in the postinst and postrm scripts (in v3 mode and above only) to any packages in which it finds shared libraries.

Packages that support multiarch are detected, and a Pre-Dependency on multiarch-support is set in ${misc:Pre-Depends} ; you should make sure to put that token into an appropriate place in your debian/control file for packages supporting multiarch.  


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 architectures.


-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
By default, the shlibs file generated by this program does not make packages depend on any particular version of the package containing the shared library. It may be necessary for you to add some version dependency information to the shlibs file. If -V is specified with no dependency information, the current upstream version of the package is plugged into a dependency that looks like "packagename (>= packageversion)". Note that in debhelper compatibility levels before v4, the Debian part of the package version number is also included. If -V is specified with parameters, the parameters can be used to specify the exact dependency information needed (be sure to include the package name).

Beware of using -V without any parameters; 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 your library is prone to changing ABI without updating the upstream version number), so that if the maintainer screws up then they won't break. The flip side is that packages might end up with dependencies that are too tight and so find it harder to be upgraded.

-n, --noscripts
Do not modify postinst/postrm scripts.
-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).


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



This program is a part of debhelper.  


Joey Hess <joeyh@debian.org>