g2o庫出現undefined reference to錯誤
1.我的CMkeLists.txt
cmake_minimum_required(VERSION 2.6)
project(g2o_learn)
set(CMAKE_CXX_FLAGS "-std=c++11")
include_directories("/usr/include/eigen3")
find_package(g2o REQUIRED)
include_directories(${g2o_INCLUDE_DIRS})
find_package( OpenCV REQUIRED )
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(g2o_learn main.cpp)
target_link_libraries( g2o_learn ${OpenCV_LIBRARIES})
target_link_libraries(g2o_learn ${g2o_LIBRARIES})
install(TARGETS g2o_learn RUNTIME DESTINATION bin)
在這之後,編譯程序的時候,出現undefined reference to錯誤,基本上所有的g2o的模塊都找不到,
解決方法如下
1. 找到下載g2o庫的文件夾下,進入cmake_modules文件夾下,找到FINDG2O.cmake,然後複製到cpp目錄下的cmake文件夾下,然後修改CMakeList.txt文件,修改後的文件內容如下
cmake_minimum_required(VERSION 2.6)
project(g2o_learn)
set(CMAKE_CXX_FLAGS "-std=c++11")
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
include_directories("/usr/include/eigen3")
find_package(g2o REQUIRED)
include_directories(${g2o_INCLUDE_DIRS})
find_package( OpenCV REQUIRED )
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(g2o_learn main.cpp)
target_link_libraries( g2o_learn ${OpenCV_LIBRARIES})
#target_link_libraries(g2o_learn ${g2o_LIBRARIES})
target_link_libraries(g2o_learn g2o_core g2o_stuff)
install(TARGETS g2o_learn RUNTIME DESTINATION bin)
Thank for your reading !!!