Brad King wrote:
If FindXXX.cmake is found in the paths specified by CMAKE_MODULE_PATH,
it is loaded by find_package(XXX).
There should not be a FindXXX.cmake at all.
OK.
So is either FindXXX or XXXConfig, for package configured without and with
cmake respectively.
If not, but the user sets XXX_DIR to some binary folder for some
installation of XXX, the above code works still by loading
XXXConfig.cmake directly (witout going through FindXXX..cmake)
Is all that correct?
Yes.
Is so, how should FindXXX and UseXXX distributed?
UseXXX.cmake should come with the project next to XXXConfig.cmake.
OK.
I suppose it could also go the the source tree provided each XXXConfig.cmake
point to it via XXX_USE_FILE
The whole idea of creating a package with XXXConfig.cmake is to not have
to have a FindXXX.cmake module at all.
OK
The find_package command is
supposed to find XXXConfig.cmake automatically, but it is not very good
at finding the files as of CMake 2.4 so the user has to set XXX_DIR
alot. CMake 2.6 will have a much better find_package:
http://www.cmake.org/Wiki/CMake_2.6_Notes#Packages
Just read it.
You should install XXXConfig.cmake and UseXXX.cmake in the XXX install
tree under one of the locations mentioned in the find_package command
documentation (as of CMake 2.6). For example, a project on UNIX might
install
<prefix>/lib/xxx-1.2/XXXConfig.cmake
Hmmm.
Shouldn't that be decided by the package user?
Right now I generate XXConfig right there in XXX_BINARY_DIR, whatever that
is, and use an INSTALL command to copy that to whatever the user chooses as
the installation folder (which could be <prefix>/lib/xxx-1.2, but could be
something else).
For this package it is importat that a user (such as XXX's testsuite) can
use XXX without "installing" it via the install target, that's why I put the
config file in the binary folder right away.
Someone using CMake 2.4 will have to set XXX_DIR to that directory by
hand, but anyone using CMake 2.6 will have the file found automatically.
Except on Windows... or are there special search paths for Windows as well?
(please look at my upcoming post about XXX_DIR)
Versioning is also supported in the CMake 2.6 find_package. See the
nots above.
I just read it, cool.
Thanks
--
Fernando Cacciola
SciSoft
http://fcacciola.50webs.com
http://groups.google.com/group/cppba
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