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External Library Link Error [closed]

asked 2011-08-11 18:25:18 -0500

Dongjun gravatar image

updated 2011-09-02 11:47:26 -0500

kwc gravatar image

I'm trying to use external library file "libdssp_rs232_drive_module.so".

I met following error message.

Linking CXX executable ../dssp

CMakeFiles/dssp.dir/src/dssp.o: In function `main':

/home/hass/my_robot/dssp/src/dssp.cpp:9: undefined reference to `dssp_rs232_drv_module_create(char const*, int)'

collect2: ld returned 1 exit status

------------------------------------------------------------------------------
My setup files are followings

CMakeLists.txt

cmake_minimum_required(VERSION 2.4.6)

include($ENV{ROS_ROOT}/core/rosbuild/rosbuild.cmake)

rosbuild_init()

rosbuild_add_executable(dssp src/dssp.cpp)

target_link_libraries(dssp dssp_rs232_drive_module)

manifest.xml

<package>

...

<export>

  <cpp cflags="-I${prefix}/include" lflags="-L${prefix}/lib -Wl,-rpath,${prefix}/lib -ldssp_rs232_drive_module"/>

</export>

</package>

How can I solve this problem?

PS. I tried to make execution file of microstrain_3dmgx2_imu Package, which is the officially published package in ROS DIAMONDBACK. sudo make clean sudo make But I met the same error massage. Why does the officially published package have the same link error?

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Closed for the following reason question is not relevant or outdated by kwc
close date 2012-02-29 07:53:18

Comments

It seems that the library doesn't provide the call, which shouldn't be. What system are you using? To verify its linked, you can VERBOSE=1 make, to show compiler lines.
dornhege gravatar image dornhege  ( 2011-08-12 02:04:43 -0500 )edit
BTW: You don't need the export in the manifest. That is for other packages using libraries that you build.
dornhege gravatar image dornhege  ( 2011-08-12 02:06:17 -0500 )edit
you can try running "nm libdssp_rs232_drive_module.so |grep dssp_rs232_drv_module_create" to see if that symbol is available in your library
Markus Achtelik gravatar image Markus Achtelik  ( 2011-09-02 12:05:33 -0500 )edit

2 Answers

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answered 2011-08-13 05:21:31 -0500

Zack gravatar image

change the following line

from target_link_libraries(dssp dssp_rs232_drive_module)

to target_link_libraries(dssp /pathto/libdssp_rs232_drive_module.so)

where pathto is the path to ur libdssp_rs232_drive_module.so file

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Comments

Can you post your edited CMakeLists.txt? And perhaps you might want to consider posing your comments as comments
Zack gravatar image Zack  ( 2011-08-22 15:27:11 -0500 )edit
-1

answered 2011-08-21 16:35:12 -0500

Dongjun gravatar image

The answer doesn't solve the problem. And, the error message is same to the previous one.

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Asked: 2011-08-11 18:25:18 -0500

Seen: 485 times

Last updated: Sep 02 '11