I added
include_directories(include /usr/include/libmodbus)
to the CMakeList.txt of my package, and my test node is
#include
#include
int main(int argc, char** argv) {
modbus_t *Scara;
Scara = modbus_new_tcp("192.168.1.219", 502);
if (modbus_connect(Scara) == -1) {
ROS_ERROR("Conexion fallida");
modbus_free(Scara);
}else{
ROS_INFO("Conexion exitosa");
}
return 0;
}
but when i run catkin_make i get the following errors
In function `main':
scaraListen.cpp:(.text+0x1b): undefined reference to `modbus_new_tcp'
scaraListen.cpp:(.text+0x2b): undefined reference to `modbus_connect'
scaraListen.cpp:(.text+0x135): undefined reference to `modbus_free'
collect2: error: ld returned 1 exit status
It seems that it's not linking to the library, but when i add
target_link_libraries(main /usr/include/libmodbus.so)
to the `CMakeList.txt` and try to compile i get:
(target_link_libraries):
Cannot specify link libraries for target "main" which is not built by this project.
Where i'm messing up?
EDIT: my complete `CMakeList.txt` looks like this
cmake_minimum_required(VERSION 2.8.3)
project(pointCloud)
find_package(catkin REQUIRED COMPONENTS
pcl_conversions
pcl_msgs
pcl_ros
roscpp
rospy
std_msgs
sensor_msgs
tf
laser_geometry
)
include_directories(
${catkin_INCLUDE_DIRS}
)
include_directories(include ${catkin_INCLUDE_DIRS})
include_directories(include /usr/include/libmodbus)
add_executable(converter src/converter.cpp)
target_link_libraries(converter ${catkin_LIBRARIES})
add_dependencies(converter pointCloud_conv)
add_executable(tfTest src/tftest.cpp)
target_link_libraries(tfTest ${catkin_LIBRARIES})
add_dependencies(tfTest pointCloud_conv)
add_executable(scaraListen src/scaraListen.cpp)
target_link_libraries(scaraListen ${catkin_LIBRARIES})
add_dependencies(scaraListen pointCloud_conv)
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