[CMake] make - cannot open output file . (dot)

[Bill Hoffman]

tom at unforbidable.com wrote:
> So I tried to set EXECUTABLE_OUTPUT_PATH to the same path as
> PROJECT_BINARY_DIR like so:
> 
> SET(EXECUTABLE_OUTPUT_PATH "${PROJECT_BINARY_DIR}" CACHE
> PATH "Single output directory for building all executables."
> FORCE)
> 
> This works on Windows (nmake makefiles) but when using cmake
> on Gentoo (standard unix makefiles) and calling make then I
> get the following:
> 
> Scanning dependencies of target libfurc
> [ 50%] Building CXX object
> libfurc/CMakeFiles/libfurc.dir/base/furcadiasettings.cpp.o
> /home/tom/opendreamer/src/libfurc/base/furcadiasettings.cpp:26:2:
> warning: no newline at end of file
> Linking CXX static library liblibfurc.a
> [ 50%] Built target libfurc
> Scanning dependencies of target tstfurcsettings
> [100%] Building CXX object
> tstfurcsettings/CMakeFiles/tstfurcsettings.dir/main.cpp.o
> Linking CXX executable .
> /usr/lib/gcc/i686-pc-linux-gnu/4.1.2/../../../../i686-pc-linux-gnu/bin/ld:
> cannot open output file .: Is a directory
> collect2: ld returned 1 exit status
> make[2]: *** [tstfurcsettings] Error 1
> make[1]: ***
> [tstfurcsettings/CMakeFiles/tstfurcsettings.dir/all] Error 2
> make: *** [all] Error 2
> 
> The dot is clearly there.  I got rid of the error by setting
> the path like so:
> 
> SET(EXECUTABLE_OUTPUT_PATH "${PROJECT_BINARY_DIR}/bin" CACHE
> PATH "Single output directory for building all executables."
> FORCE)
> 
> Both cmakes are the same version (2.6-patch 4). 
> 
> I don't think I am doing anything wrong although this is my
> first day with cmake.  I decided to post this in case it was
> not an known problem.  I obviously failed to google anything
> up because the key word is . (dot).
> 
Sounds like you created an executable with the name "." somehow...  What 
does your add_executable line look like?

-Bill