我试图使用CMake链接库(
BNO055 Driver).由于BNO055驱动程序不使用CMake并且大约一年没有更改,我决定只下载源文件并将它们放入我的项目中.
然后我使用CMake创建一个库并链接它.
问题是该链接似乎不起作用.当我编译项目时,我得到一个未定义的引用< function>错误,其中< function>是由BNO055驱动程序定义的函数.
我是否错误地创建或链接了库?
我是否需要做其他事情来定义这些功能?
为了不粘贴200行代码,这里有一个简化的main.cpp,它产生与真正的main.cpp相同的错误.如果你想看到真正的main.cpp,请点击下面的链接到Github repo
#include "bno055.h"
#include "mraa.hpp"
struct bno055_t bno055;
mraa::I2c *i2c(0);
int main() {
bno055_init(&bno055);
i2c->address(0x29);
}
的CMakeLists.txt
cmake_minimum_required(VERSION 2.8.4)
project(imc-server)
# CMake
# -- Config
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")
# Global
# -- Include
include(ExternalProject)
# BNO055
# -- Include
include_directories(${CMAKE_SOURCE_DIR}/bno055)
set(SOURCE_FILES ${SOURCE_FILES}
${CMAKE_SOURCE_DIR}/bno055/bno055.h
${CMAKE_SOURCE_DIR}/bno055/bno055.c)
# MRAA
# -- Build
externalProject_add(mraa
GIT_REPOSITORY https://github.com/intel-iot-devkit/mraa.git
GIT_TAG v0.7.5
)
# Compile
# -- Source
set(SOURCE_FILES ${SOURCE_FILES}
main.cpp)
# -- Create
add_executable(imc-server ${SOURCE_FILES})
add_dependencies(imc-server mraa)
构建日志的相关部分
[ 90%] Linking CXX executable imc-server
CMakeFiles/imc-server.dir/test.cpp.o: In function `main':
/home/noah/Documents/Inertial-Motion-Capture/imc-server/test.cpp:8: undefined reference to `bno055_init(bno055_t*)'
CMakeFiles/imc-server.dir/test.cpp.o: In function `mraa::I2c::address(unsigned char)':
/usr/local/include/mraa/i2c.hpp:99: undefined reference to `mraa_i2c_address'
collect2: error: ld returned 1 exit status
make[2]: *** [imc-server] Error 1
make[1]: *** [CMakeFiles/imc-server.dir/all] Error 2
make: *** [all] Error 2