[CMake] Wrong number of "../" elements in target path? 2.4.6 vs. 2.4.7 bug?

[Bill Hoffman]

Christian Convey wrote:
> Does anyone know about this?
> 
> I've got a C++ project on Linux.  I've been using CMake with it for a
> while now.
> 
> In the past I had one directory per library or application that's in
> my project.  The other day I modified my project so that some lib/app
> code directories are at directory level n, and some others are at
> directory level n+1.
> 
> I have a "bin" directory at (directory level n) that is where the
> executable program targets are supposed to be placed.  I accomplish
> this with by properly setting EXECUTABLE_OUTPUT_PATH in a top-level
> CMakeLists.txt file.
> 
> Now that I've moved some of the source directories, though, I'm having
> a problem with CMake 2.4.6-based builds of my code, but the problem is
> absent in 2.4.7:
> 
> When CMake builds an application whose source directory is at level
> n+1, the relative path used in the linker invocation, to say where the
> resulting program file is supposed to end up, has the wrong number of
> "../" elements in the path.  Specifically, it has one more than is
> needed, and thus complains that it can't find the "bin" directory.
> 
> Here's the output:
> 
> Linking CXX executable ../../../bin/p1BTracker
> cd /home/cjc/y/trunk/ivp/src/./eickstedt/p1BTracker && /usr/bin/cmake
> -P CMakeFiles/p1BTracker.dir/cmake_clean_target.cmake
> cd /home/cjc/y/trunk/ivp/src/./eickstedt/p1BTracker && /usr/bin/c++
>   -fPIC "CMakeFiles/p1BTracker.dir/1BTrack.o"
> "CMakeFiles/p1BTracker.dir/1BTracker.o"
> "CMakeFiles/p1BTracker.dir/p1BTrackMain.o"   -o
> ../../../bin/p1BTracker -rdynamic -L/home/cjc/y/trunk/MOOS/MOOSBin
> -L/home/cjc/y/trunk/ivp/src/./eickstedt/lib_track -Wl,-Bstatic -lMOOS
> -lMOOSGen -lopt -Wl,-Bdynamic -lm -lpthread
> -Wl,-rpath,/home/cjc/y/trunk/MOOS/MOOSBin:/home/cjc/y/trunk/ivp/src/./eickstedt/lib_track
> /usr/bin/ld: cannot open output file ../../../bin/p1BTracker: No such
> file or directory
> collect2: ld returned 1 exit status
> make[2]: *** [ivp/src/bin/p1BTracker] Error 1
> make[2]: Leaving directory `/home/cjc/y/trunk'
> make[1]: *** [ivp/src/./eickstedt/p1BTracker/CMakeFiles/p1BTracker.dir/all]
> Error 2
> make[1]: Leaving directory `/home/cjc/y/trunk'
> make: *** [all] Error 2
> 
> I can't find a bug report about this, but I need to figure out a
> work-around.  Many of my users have Ubuntu 7.04, which ships with
> CMake 2.4.6, not 2.4.7.  Any suggestions?
> 

Can you create a test case that shows this problem?

-Bill