Catalina C++ 的 Curl 失败并获取“架构 x86_64 的未定义符号”

bje*_*ski 4 c++ macos curl libcurl

我正在尝试使用 Catalina 10.15 运行示例 C++ 程序:

#include </usr/local/opt/curl/include/curl/curl.h>

int main(void) {

    CURL* curl;
    CURLcode result;

    curl = curl_easy_init();
    curl_easy_setopt(curl, CURLOPT_URL, "https://www.wikipedia.org");

    result = curl_easy_perform(curl);

    curl_easy_cleanup(curl);

    return 0;
}
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我已经安装了curl:

brew install curl
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我不明白为什么这不起作用,我得到:

Scanning dependencies of target 2700
[ 50%] Building CXX object CMakeFiles/2700.dir/main.cpp.o
[100%] Linking CXX executable 2700
Undefined symbols for architecture x86_64:
  "_curl_easy_cleanup", referenced from:
      _main in main.cpp.o
  "_curl_easy_init", referenced from:
      _main in main.cpp.o
  "_curl_easy_perform", referenced from:
      _main in main.cpp.o
  "_curl_easy_setopt", referenced from:
      _main in main.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [2700] Error 1
make[2]: *** [CMakeFiles/2700.dir/all] Error 2
make[1]: *** [CMakeFiles/2700.dir/rule] Error 2
make: *** [2700] Error 2
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我的CMakeLists.txt如下:

cmake_minimum_required(VERSION 3.15.3)
project(2700)

include_directories(/usr/local/opt/curl/include/)

set(CMAKE_CXX_STANDARD 17)

add_executable(2700 main.cpp )
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我正在使用 CLion,并且对 C++ 相当陌生,尤其是在 MacOS 上。

我该怎么做才能让卷曲正常工作而不出现问题?

bje*_*ski 8

我意识到我需要在 CMakeLists.txt 中进行链接:

这有效:

cmake_minimum_required(VERSION 3.15.3)
project(2700)

include_directories(/usr/local/opt/curl/include/)

set(CMAKE_CXX_STANDARD 17)

set(CURL_LIBRARY "-lcurl")
find_package(CURL REQUIRED)

add_executable(2700 main.cpp )

include_directories(${CURL_INCLUDE_DIR})
target_link_libraries(2700 ${CURL_LIBRARIES})
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小智 5

我在 MacOS Big Sur 上遇到了同样的错误...完全相同。对我来说解决这个问题的是这个答案:libcurlsymbolnotfound

您需要做的就是链接 CURL: -lcurl

我也在使用 CLion,但不想打扰该CMakeLists.txt文件。

通过编译命令添加标志对我来说要容易得多:

c++ main.cpp -o main -lcurl
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