[CMake] CPack: howto change directory layout depending on the generator

[Tanguy Krotoff]

Hi everybody

I would like to change the directory layout generated by CPack given
the generator used.
In a way, I would like a more fine-grained control about what CPack
generates and after reading the different docs I don't know if it is
possible.

I have a pretty complex multiplatform program with plugins, internal
libraries... here are the different layouts I would like to achieve:

** NSIS:
/app.exe
/internal_lib1.dll
/internal_lib2.dll
/plugins/plugin1.dll
/plugins/plugin2.dll

** DEB / RPM:
/usr/bin/app
/usr/lib/app/internal_lib1.so
/usr/lib/app/internal_lib2.so
/usr/lib/app/plugins/plugin1.so
/usr/lib/app/plugins/plugin2.so

** TGZ / ZIP (same as NSIS):
/app
/app.sh (does a export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH ./app)
/internal_lib1.so
/internal_lib2.so
/plugins/plugin1.so
/plugins/plugin2.so

** If no generator is used, make install should give the same layout
as with NSIS / TGZ / NSIS
This way I just have to go to my build directory and run app.sh or
app.exe directly:
this simplifies the compile/test procedure since there is no need for
the install step (i.e compile/install/test).


So I have this code in my root CMakeLists.txt:

if (LINUX)
	set(INSTALL_TARGETS_DEFAULT_ARGS
		RUNTIME DESTINATION bin
		LIBRARY DESTINATION lib/myapp
	)
	set(INSTALL_PLUGINS_DEFAULT_ARGS
		RUNTIME DESTINATION bin
		LIBRARY DESTINATION lib/myapp/plugins
	)
endif

if (WIN32)
	set(INSTALL_TARGETS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
	set(INSTALL_PLUGINS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
endif

As you see it does not depend on the generator invoked but on the
platform instead
I you would to change it to something like this:

if (CPACK_GENERATOR == "DEB,RPM")
	set(INSTALL_TARGETS_DEFAULT_ARGS
		RUNTIME DESTINATION bin
		LIBRARY DESTINATION lib/myapp
	)
	set(INSTALL_PLUGINS_DEFAULT_ARGS
		RUNTIME DESTINATION bin
		LIBRARY DESTINATION lib/myapp/plugins
	)
endif

if (CPACK_GENERATOR == "TGZ,ZIP,NSIS")
	set(INSTALL_TARGETS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
	set(INSTALL_PLUGINS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
endif

if (NOT CPACK_GENERATOR)
	set(INSTALL_TARGETS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
	set(INSTALL_PLUGINS_DEFAULT_ARGS
		RUNTIME DESTINATION .
		LIBRARY DESTINATION .
	)
endif


Do you know if this king of things are possible?

Thanks in advance,

-- 
Tanguy Krotoff <tkrotoff at gmail.com>
+33 6 68 42 70 24