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[[cmake-multi]]
=== CMake (multi-binary package)
Here is an example of creating a set of Debian binary packages including the executable package, the shared library package, the development file package, and the debug symbol package from a simple C source program using CMake (*CMakeLists.txt* and some files such as *config.h.in*) as its build system. See <<cmake>>.
Let's assume this upstream tarball to be *debhello-2.1.tar.gz*.
This type of source is meant to be installed as a non-system file, for example, as:
----
$ tar -xzmf debhello-2.1.tar.gz
$ cd debhello-2.1
$ mkdir obj-x86_64-linux-gnu
$ cd obj-x86_64-linux-gnu
$ cmake ..
$ make
$ make install
----
Let's get the source and make the Debian package.
.Download *debhello-2.1.tar.gz*
----
include::../debhello-2.1-pkg1/step000.slog[]
----
Here, the contents of this source are as follows.
.*src/hello.c* (v=2.1):
----
include::../debhello-2.1-pkg1/step101.slog[]
----
.*src/config.h.in* (v=2.1):
----
include::../debhello-2.1-pkg1/step102.slog[]
----
.*lib/sharedlib.c* and *lib/sharedlib.h* (v=2.1):
----
include::../debhello-2.1-pkg1/step104.slog[]
----
.*CMakeLists.txt* (v=2.1):
----
include::../debhello-2.1-pkg1/step103.slog[]
----
Let's package this with the *debmake* command.
----
sys::[head -n12 ../debhello-2.1-pkg1/step200.slog]
...
----
The result is similar to <<configure-single>> but not exactly the same.
Let's inspect the notable template files generated.
.*debian/rules* (template file, v=2.1):
----
include::../debhello-2.1-pkg1/step202.slog[]
----
Let's make this Debian package better as the maintainer.
.*debian/rules* (maintainer version, v=2.1):
----
include::../debhello-2.1-pkg1/step301.slog[]
----
.*debian/control* (maintainer version, v=2.1):
----
include::../debhello-2.1-pkg1/step302.slog[]
----
.**debian/*.install** (maintainer version, v=2.1):
----
include::../debhello-2.1-pkg1/step303.slog[]
----
This upstream CMakeList.txt needs to be patched to cope with the multiarch path.
.*debian/patches/** (maintainer version, v=2.1):
----
include::../debhello-2.1-pkg1/step304.slog[]
----
Since this upstream source creates the proper auto-generated *Makefile*, there is no need to create *debian/install* and *debian/manpages* files.
There are several other template files under the *debian/* directory. These also need to be updated.
.Template files under *debian/*. (v=2.1):
----
include::../debhello-2.1-pkg1/step400.slog[]
----
The rest of the packaging activities are practically the same as the one in <<configure-single>>.
Here are the generated dependency list of all binary packages.
.The generated dependency list of all binary packages (v=2.1):
----
include::../debhello-2.1-pkg1/step702.slog[]
----
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