找不到arm-none linux-gnueabi-g++编译器的-lpaho-mqtt3c
找不到arm-none linux-gnueabi-g++编译器的-lpaho-mqtt3c
提问于 2020-04-17 15:44:21
我在下面的路径中有arm-none-linux-gnueabi-g++编译器，
root@user-VirtualBox:~# which arm-none-linux-gnueabi-g++
/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-g++我已经在paho的构建命令中给出了相同的DCMAKE_COMPILER路径，
user@user-VirtualBox:~/octane_etk_sample-6.0.0.240/paho.mqtt.c$ cmake -Bbuild -H. -DPAHO_WITH_SSL=OFF -DPAHO_ENABLE_TESTING=OFF -DCMAKE_C_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc -DCMAKE_CXX_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-g++
-- The C compiler identification is GNU 4.8.1
-- Check for working C compiler: /home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc
-- Check for working C compiler: /home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- CMake version: 3.10.2
-- CMake system name: Linux
-- Timestamp is 2020-04-17T07:33:49Z
-- Configuring done
-- Generating done
CMake Warning:
Manually-specified variables were not used by the project:
CMAKE_CXX_COMPILER
-- Build files have been written to: /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/build在我给出了这个构建之后，
$ sudo cmake --build build/ --target install
$ sudo ldconfig我将libpaho-mqtt3c.so、libpaho-mqtt3c.so.1、libpaho-mqtt3c.so.1.3.1从"/home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/build/src/“复制到这个"-lltkcpp_atmel”所在的同一文件夹中。
然而，当我给出make it时说，找不到-lpaho-mqtt3c，
root@user-VirtualBox:/home/user/octane_etk_sample-6.0.0.240# make arm
mkdir -p ./bin
arm-none-linux-gnueabi-g++ \
-Wno-write-strings \
-Iinclude \
speedway_embedded_example.cpp -lpaho-mqtt3c \
-Llib \
-static -lltkcpp_atmel -lltkcppimpinj_atmel -lxml2_atmel \
-lssl_atmel -lcrypto_atmel -ldl_atmel \
-o bin/speedwayr_arm
/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/../lib/gcc/arm-none-linux-gnueabi/4.8.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lpaho-mqtt3c如何克服这个问题？在构建paho来对抗arm-none-linux-gnueabi-gcc & g++的时候有什么问题吗？
注1: David Ranieri建议的编译器命令
root@user-VirtualBox:/home/mindlogic/octane_etk_sample-6.0.0.240# make arm
mkdir -p ./bin
arm-none-linux-gnueabi-g++ \
-Wno-write-strings \
-o bin/speedwayr_arm \
-Iinclude \
speedway_embedded_example.cpp -lpaho-mqtt3c \
-Llib \
-static -lltkcpp_atmel -lltkcppimpinj_atmel -lxml2_atmel \
-lssl_atmel -lcrypto_atmel -ldl_atmel
/home/mindlogic/octane_etk-6.0.0.240/arm-toolchain/bin/../lib/gcc/arm-none-linux-gnueabi/4.8.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lpaho-mqtt3c注2：
我已经将cmake构建从
cmake -Bbuild -H. -DPAHO_WITH_SSL=OFF -DPAHO_ENABLE_TESTING=OFF -DCMAKE_C_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc -DCMAKE_CXX_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-g++至
cmake -Bbuild -H. -DPAHO_WITH_SSL=OFF -DPAHO_ENABLE_TESTING=OFF
-DPAHO_BUILD_STATIC=True -DCMAKE_C_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc -DCMAKE_CXX_COMPILER=/home/user/octane_etk-6.0.0.240/arm-toolchain在将库构建为静态库之后，现在我可以使用"makr arm“成功地编译，即下面给出的命令
root@user-VirtualBox:/home/user/octane_etk_sample-6.0.0.240# make cap
mkdir -p ./bin
arm-none-linux-gnueabi-g++ \
-Wno-write-strings \
-Iinclude \
speedway_embedded_example.cpp \
-Llib \
-static -lltkcpp_atmel -lltkcppimpinj_atmel -lxml2_atmel \
-lssl_atmel -lcrypto_atmel -ldl_atmel -lpaho-mqtt3c-static -ljansson -lpthread \
-o bin/speedwayr_arm回答 1
Stack Overflow用户
发布于 2020-04-17 15:50:11
顺序很重要，请尝试在链接之前生成对象：
arm-none-linux-gnueabi-g++ \
-Wno-write-strings \
-o bin/speedwayr_arm \
-Iinclude \
speedway_embedded_example.cpp -lpaho-mqtt3c \
-Llib \
-static -lltkcpp_atmel -lltkcppimpinj_atmel -lxml2_atmel \
-lssl_atmel -lcrypto_atmel -ldl_atmel页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/61266452
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