Re: [CMake] linking libraries at many levels

[Michael Wild]

On 25. Aug, 2009, at 15:51, Pol Monsó IRI wrote:

DON'T EVER do something like this unless you really know what  
you're doing.
The proper way of doing this is to use the Debug configuration at
configure-time:

cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS=-Wall /path/to/ 
source


Thanks for the tip! I had just put the warnings on to find out some  
more
about what could be going wrong

This should be:

TARGET_LINK_LIBRARIES( calClient
${OPENCV_LIBRARIES}
callibs
)


I changed it, the make went without any appreciable effect. Here's hte
output:


pmo...@delucia:~/YARP/Calclient$ make VERBOSE=1
/usr/local/bin/cmake -H/home/pmonso/YARP/Calclient
-B/home/pmonso/YARP/Calclient --check-build-system CMakeFiles/ 
Makefile.cmake
0
/usr/local/bin/cmake -E cmake_progress_start
/home/pmonso/YARP/Calclient/CMakeFiles
/home/pmonso/YARP/Calclient/CMakeFiles/progress.make
make -f CMakeFiles/Makefile2 all
make[1]: Entering directory `/home/pmonso/YARP/Calclient'
make -f lib/CMakeFiles/callibs.dir/build.make
lib/CMakeFiles/callibs.dir/depend
make[2]: Entering directory `/home/pmonso/YARP/Calclient'
cd /home/pmonso/YARP/Calclient && /usr/local/bin/cmake -E  
cmake_depends
"Unix Makefiles" /home/pmonso/YARP/Calclient /home/pmonso/YARP/ 
Calclient/lib
/home/pmonso/YARP/Calclient /home/pmonso/YARP/Calclient/lib
/home/pmonso/YARP/Calclient/lib/CMakeFiles/callibs.dir/ 
DependInfo.cmake
--color=
make[2]: Leaving directory `/home/pmonso/YARP/Calclient'
make -f lib/CMakeFiles/callibs.dir/build.make
lib/CMakeFiles/callibs.dir/build
make[2]: Entering directory `/home/pmonso/YARP/Calclient'
make[2]: Nothing to be done for `lib/CMakeFiles/callibs.dir/build'.
make[2]: Leaving directory `/home/pmonso/YARP/Calclient'
/usr/local/bin/cmake -E cmake_progress_report
/home/pmonso/YARP/Calclient/CMakeFiles  3 4 5
[ 60%] Built target callibs
make -f CMakeFiles/calClient.dir/build.make CMakeFiles/ 
calClient.dir/depend
make[2]: Entering directory `/home/pmonso/YARP/Calclient'
cd /home/pmonso/YARP/Calclient && /usr/local/bin/cmake -E  
cmake_depends
"Unix Makefiles" /home/pmonso/YARP/Calclient /home/pmonso/YARP/ 
Calclient
/home/pmonso/YARP/Calclient /home/pmonso/YARP/Calclient
/home/pmonso/YARP/Calclient/CMakeFiles/calClient.dir/DependInfo.cmake
--color=
make[2]: Leaving directory `/home/pmonso/YARP/Calclient'
make -f CMakeFiles/calClient.dir/build.make CMakeFiles/ 
calClient.dir/build
make[2]: Entering directory `/home/pmonso/YARP/Calclient'
Linking CXX executable calClient
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/calClient.dir/ 
link.txt
--verbose=1
/usr/bin/c++   -g -Wall  -fPIC CMakeFiles/calClient.dir/ 
calClient.cpp.o
CMakeFiles/calClient.dir/chaser.cpp.o  -o calClient -rdynamic -Llib
/home/pmonso/YARP/yarp-2.2.2/lib/libYARP_dev.a
/home/pmonso/YARP/yarp-2.2.2/lib/libYARP_sig.a
/home/pmonso/YARP/yarp-2.2.2/lib/libYARP_OS.a -lACE -lcv -lcvaux - 
lcxcore
-lhighgui lib/libcallibs.a /home/pmonso/YARP/yarp-2.2.2/lib/ 
libYARP_dev.a
/home/pmonso/YARP/yarp-2.2.2/lib/libYARP_sig.a
/home/pmonso/YARP/yarp-2.2.2/lib/libYARP_OS.a -lACE -Wl,-rpath,lib
CMakeFiles/calClient.dir/calClient.cpp.o: In function
`incrementalCalibrate(yarp::dev::IPositionControl*,  
yarp::dev::IEncoders*)':
/home/pmonso/YARP/Calclient/calClient.cpp:276: undefined reference to
`print_double_array(double const*, int)'
/home/pmonso/YARP/Calclient/calClient.cpp:277: undefined reference to
`print_double_array(double const*, int)'
/home/pmonso/YARP/Calclient/calClient.cpp:295: undefined reference to
`print_double_array(double const*, int)'
CMakeFiles/calClient.dir/calClient.cpp.o: In function
`calibrate(yarp::dev::IPositionControl*, yarp::dev::IEncoders*)':
/home/pmonso/YARP/Calclient/calClient.cpp:155: undefined reference to
`print_double_array(double const*, int)'
CMakeFiles/calClient.dir/calClient.cpp.o: In function
`randomCalibrate(yarp::dev::IPositionControl*,  
yarp::dev::IEncoders*)':
/home/pmonso/YARP/Calclient/calClient.cpp:207: undefined reference to
`print_double_array(double const*, int)'
CMakeFiles/calClient.dir/calClient.cpp.o:/home/pmonso/YARP/ 
Calclient/calClient.cpp:208:
more undefined references to `print_double_array(double const*,  
int)' follow
collect2: ld returned 1 exit status
make[2]: *** [calClient] Error 1
make[2]: Leaving directory `/home/pmonso/YARP/Calclient'
make[1]: *** [CMakeFiles/calClient.dir/all] Error 2
make[1]: Leaving directory `/home/pmonso/YARP/Calclient'
make: *** [all] Error 2
pmo...@delucia:~/YARP/Calclient$


Thank you very much for the quick response!

pol

As you can see, lib/libcallibs.a is in the link-command, so it must be  
something else. What does

nm lib/libcallibs.a | grep print_double_array

tell you?

Michael
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