将paho mqtt c与arm-none linux-gnueabi-gcc和arm-none-linux-gnueabi-g++链接时出错

Question

我在下面的给定路径中有arm-none-linux-gnueabi，并且使用相同的编译器构建我的目标文件。

root@user-VirtualBox:/home/user/octane_etk_sample-6.0.0.240# which arm-none-linux-gnueabi-gcc
/home/user/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-gcc
root@user-VirtualBox:/home/user/octane_etk_sample-6.0.0.240# which arm-none-linux-gnueabi-g++
/home/mindlogic/octane_etk-6.0.0.240/arm-toolchain/bin/arm-none-linux-gnueabi-g++

现在，我需要将paho mqtt c& c++与上面提到的编译器路径链接起来，这样我就可以在使用相同编译器的trget文件中包含paho头文件来建立连接。

我给出了下面的命令，将paho mqtt c与arm-none-linux-gnueabi链接起来，并得到如下响应：

root@user-VirtualBox:/home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c# cmake -Bbuild -H. -DPAHO_WITH_SSL=ON -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++
-- CMake version: 3.10.2
-- CMake system name: Linux
-- Timestamp is 2020-04-15T14:03:15Z
-- OpenSSL hints: 
-- OpenSSL headers found at /usr/include
-- OpenSSL library found at OPENSSL_LIB-NOTFOUND
-- OpenSSL Crypto library found at OPENSSLCRYPTO_LIB-NOTFOUND
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
OPENSSLCRYPTO_LIB
    linked by target "Sha1TestOpenSSL" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "Base64TestOpenSSL" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "paho-mqtt3cs" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "paho-mqtt3as" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
OPENSSL_LIB
    linked by target "Sha1TestOpenSSL" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "Base64TestOpenSSL" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "paho-mqtt3cs" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src
    linked by target "paho-mqtt3as" in directory /home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/src

-- Configuring incomplete, errors occurred!
See also "/home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/build/CMakeFiles/CMakeOutput.log".
See also "/home/user/octane_etk_sample-6.0.0.240/paho.mqtt.c/build/CMakeFiles/CMakeError.log".

谁能帮我把mqtt c& c++和arm-none linux-gnueabi-gnueabi&arm-none linux-gnueabi-g++链接起来？

Answer 1

这里的问题是，它找不到正确版本的OPENSSL库来链接paho库，而不是工具链。

您需要设置它可以找到这些依赖库的ARM版本的路径，这样它们就可以首先链接到paho库中。