ch3 useGeometry在ubuntu18.04，clion下进行编译出错

[gaoxiang12]

ch3 useGeometry在ubuntu18.04，clion下进行编译出错

[LongruiDong]

====================[ Build | eigenGeometry | Debug ]===========================
/snap/clion/82/bin/cmake/linux/bin/cmake --build /home/xhyu/slambook2/ch3/useGeometry/cmake-build-debug --target eigenGeometry -- -j 6
Scanning dependencies of target eigenGeometry
[ 33%] Building CXX object CMakeFiles/eigenGeometry.dir/home/xhyu/slambook2/ch3/examples/coordinateTransform.cpp.o
[ 66%] Linking CXX executable eigenGeometry
CMakeFiles/eigenGeometry.dir/home/xhyu/slambook2/ch3/examples/coordinateTransform.cpp.o: In function main': /usr/include/eigen3/Eigen/src/Core/IO.h:129: multiple definition of main'
CMakeFiles/eigenGeometry.dir/eigenGeometry.cpp.o:/home/xhyu/slambook2/ch3/useGeometry/eigenGeometry.cpp:13: first defined here
collect2: error: ld returned 1 exit status
CMakeFiles/eigenGeometry.dir/build.make:98: recipe for target 'eigenGeometry' failed
make[3]: *** [eigenGeometry] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/eigenGeometry.dir/all' failed
make[2]: *** [CMakeFiles/eigenGeometry.dir/all] Error 2
CMakeFiles/Makefile2:84: recipe for target 'CMakeFiles/eigenGeometry.dir/rule' failed
make[1]: *** [CMakeFiles/eigenGeometry.dir/rule] Error 2
Makefile:118: recipe for target 'eigenGeometry' failed
make: *** [eigenGeometry] Error 2

错误提示如上，然后经过阅读个人认为是main函数重复定义，另外在cmakelist中直接将两个文件都生成了可执行文件，冲突了，修改cmakelist或者修改任意一个main函数的文件名可以解决该问题，但是本人刚刚开始学习，所以不敢肯定，恳求大佬指点

我也是改了cmakelists ，。。

[ten1er]

在useGeometry的CMakeLists.txt中将：
add_executable( eigenGeometry eigenGeometry.cpp ../examples/coordinateTransform.cpp)
改为：
add_executable( eigenGeometry eigenGeometry.cpp )
解决了我的问题。

[gaoxiang12]

已修复，应该是IDE自动加了一句不该加的executable。