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POCMake: cannot compile out of source project with subprojects
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  1. POCMake: cannot compile out of source project with subprojects
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    copied!<p>I have a project (with 3 subprojects) with CMake that builds perfectly when I execute cmake in the same directory as the top CMakeLists.txt. But when I try an out of source build I get the following error:</p> <pre><code>javsalgar@javsalgar-laptop:~/LocalWork/eclipse_workspace/mpiperf_pi$ mkdir build javsalgar@javsalgar-laptop:~/LocalWork/eclipse_workspace/mpiperf_pi$ cd build/ javsalgar@javsalgar-laptop:~/LocalWork/eclipse_workspace/mpiperf_pi/build$ ls javsalgar@javsalgar-laptop:~/LocalWork/eclipse_workspace/mpiperf_pi/build$ cmake .. -- The C compiler identification is GNU 4.7.3 -- The CXX compiler identification is GNU 4.7.3 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Configuring done -- Generating done -- Build files have been written to: /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build javsalgar@javsalgar-laptop:~/LocalWork/eclipse_workspace/mpiperf_pi/build$ make /usr/bin/cmake -H/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi -B/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build --check-build-system CMakeFiles/Makefile.cmake 0 /usr/bin/cmake -E cmake_progress_start /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/CMakeFiles /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/CMakeFiles/progress.marks make -f CMakeFiles/Makefile2 all make[1]: Entering directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' make -f pi_mpireduce/CMakeFiles/pi_mpireduce.dir/build.make pi_mpireduce/CMakeFiles/pi_mpireduce.dir/depend make[2]: Entering directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' cd /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build &amp;&amp; /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/pi_mpireduce /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce/CMakeFiles/pi_mpireduce.dir/DependInfo.cmake --color= Scanning dependencies of target pi_mpireduce make[2]: Leaving directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' make -f pi_mpireduce/CMakeFiles/pi_mpireduce.dir/build.make pi_mpireduce/CMakeFiles/pi_mpireduce.dir/build make[2]: Entering directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' /usr/bin/cmake -E cmake_progress_report /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/CMakeFiles 1 [ 20%] Building C object pi_mpireduce/CMakeFiles/pi_mpireduce.dir/src/mpi_pi_reduce.c.o cd /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce &amp;&amp; mpicc -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/include -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/pi_mpireduce/include -o CMakeFiles/pi_mpireduce.dir/src/mpi_pi_reduce.c.o -c /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/pi_mpireduce/src/mpi_pi_reduce.c /usr/bin/cmake -E cmake_progress_report /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/CMakeFiles 2 [ 40%] Building C object pi_mpireduce/CMakeFiles/pi_mpireduce.dir/src/dboard.c.o cd /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce &amp;&amp; mpicc -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/include -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce -I/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/pi_mpireduce/include -o CMakeFiles/pi_mpireduce.dir/src/dboard.c.o -c /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/pi_mpireduce/src/dboard.c Linking C executable . cd /home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build/pi_mpireduce &amp;&amp; /usr/bin/cmake -E cmake_link_script CMakeFiles/pi_mpireduce.dir/link.txt --verbose=1 mpicc CMakeFiles/pi_mpireduce.dir/src/mpi_pi_reduce.c.o CMakeFiles/pi_mpireduce.dir/src/dboard.c.o -o . -rdynamic -lmpi /usr/bin/ld: cannot open output file .: Is a directory collect2: error: ld returned 1 exit status make[2]: *** [pi_mpireduce] Error 1 make[2]: Leaving directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' make[1]: *** [pi_mpireduce/CMakeFiles/pi_mpireduce.dir/all] Error 2 make[1]: Leaving directory `/home/javsalgar/LocalWork/eclipse_workspace/mpiperf_pi/build' make: *** [all] Error 2 </code></pre>
 

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