On 28. Jul, 2010, at 9:32 , Matthias Goesswein wrote: > Am 27.07.2010 20:01, schrieb Alexander Neundorf: >> On Tuesday 27 July 2010, Matthias Gwein wrote: >>> Hello! >>> >>> I'm using cmake 2.8.2 and I'd like to build a library of libraries and >>> i have no additional source code. >>> I tried something like that: >>> >>> add_library(mylib ) >>> target_link_libraries(mylib lib1 lib2) >>> >>> But that doesn't work, because add_library needs at least a source file. >>> >>> Is there any way to get that work, without creating a dummy source file? >> >> AFAIK no. >> If you want, you can create that dummy file e.g. with file(WRITE ...), so it >> doesn't have to go into version control. >> >> lib1 and lib2 are shared libs, right ? >> >> Alex > > No they are static libraries. I recognized that i have the same problem with > add_executable, there is also at least one source file necessary and i don't > like to make dummy files for nothing. > > But maybe the configuration of my build is unusual for CMake. I've configured > them like in my old Make Projects: > > I organize different software modules in subdirectories, so i have e.g. > > /modul1/modul1.c > /modul1/CMakelists.txt > /modul2/modul2.c > /modul2/CMakelists.txt > /CMakelists.txt > > The CMakelists is in the project root directory and adds the subdirectories > (there are also CMakeLists.txt in the subdirectories) > > In the Subdirectories, I make libraries (e.g. add_library(modul1 modul1.c)), > and in the root directory i'd like to link all libraries to a big library or > to a executable. I tried to use add_library only with the library name and > too use target_link_libraries to add the libraries of the su-modules, which > didn't work. > I don't like to have source files in the root directory, so i don't have > source files for the commands add_library or add_executable in the root > CMakeLists.txt file. > > How is somethiong like that usually done with CMake? > > Matthias.
Are those libraries only "convenience" libraries? I.e. are you ever going to install them? If not, just list the source-files in the top-level CMakeLists.txt: add_executable(super-duper modul1/modul1.c module2/module2.c ) This also saves time since you don't have to run ar and ranlib. HTH Michael _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
