undefined reference to `curl_easy_init'

本文介绍了一种在使用libcurl库进行编译时遇到的未定义引用错误,并给出了正确的编译命令来解决这一问题。

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mmxcq@mmxcq-laptop:~/c/curl$ gcc -o q q.c 
/tmp/ccyOh5HP.o: In function `main':
q.c:(.text+0x103): undefined reference to `curl_easy_init'
q.c:(.text+0x148): undefined reference to `curl_easy_setopt'
q.c:(.text+0x16c): undefined reference to `curl_easy_setopt'
q.c:(.text+0x190): undefined reference to `curl_easy_setopt'
q.c:(.text+0x19c): undefined reference to `curl_easy_perform'
q.c:(.text+0x1dc): undefined reference to `curl_easy_cleanup'
collect2: ld returned 1 exit status

gcc libcurl的时候出现这个 原来是没加curl路径  
gcc -l curl  -o q q.c 就可以了
gmake: *** [Makefile:146:all] 错误 2 --- stderr: orbbec_camera /usr/bin/ld: /lib/x86_64-linux-gnu/libnetcdf.so.19: undefined reference to `curl_global_cleanup@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_easy_getinfo@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_multi_cleanup@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_multi_perform@CURL_OPENSSL_4' /usr/bin/ld: /lib/x86_64-linux-gnu/libnetcdf.so.19: undefined reference to `curl_global_init@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_easy_perform@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_mime_init@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `TIFFReadRGBAStripExt@LIBTIFF_4.0' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_easy_init@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `TIFFReadFromUserBuffer@LIBTIFF_4.0' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_multi_add_handle@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_multi_remove_handle@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `TIFFGetStrileOffsetWithErr@LIBTIFF_4.0' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_mime_addpart@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_version_info@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_mime_name@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `TIFFGetStrileOffset@LIBTIFF_4.0' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `TIFFGetStrileByteCount@LIBTIFF_4.0' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_mime_filename@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_multi_info_read@CURL_OPENSSL_4' /usr/bin/ld: /lib/libgdal.so.30: undefined reference to `curl_s
最新发布
07-21
FAILED: MyTestHttp : && /usr/bin/c++ -g CMakeFiles/MyTestHttp.dir/main.cpp.o -o MyTestHttp && : /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::Http()': /home/hy-20/project/MyTestHttp/main.cpp:20: undefined reference to `curl_global_init' /usr/bin/ld: /home/hy-20/project/MyTestHttp/main.cpp:21: undefined reference to `curl_easy_init' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::~Http()': /home/hy-20/project/MyTestHttp/main.cpp:25: undefined reference to `curl_easy_cleanup' /usr/bin/ld: /home/hy-20/project/MyTestHttp/main.cpp:26: undefined reference to `curl_global_cleanup' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::setUrl(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': /home/hy-20/project/MyTestHttp/main.cpp:29: undefined reference to `curl_easy_setopt' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::setPostFields(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': /home/hy-20/project/MyTestHttp/main.cpp:31: undefined reference to `curl_easy_setopt' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::setMethod(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': /home/hy-20/project/MyTestHttp/main.cpp:35: undefined reference to `curl_easy_setopt' /usr/bin/ld: /home/hy-20/project/MyTestHttp/main.cpp:36: undefined reference to `curl_easy_setopt' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::setHeaders(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)': /home/hy-20/project/MyTestHttp/main.cpp:41: undefined reference to `curl_slist_append' /usr/bin/ld: /home/hy-20/project/MyTestHttp/main.cpp:42: undefined reference to `curl_easy_setopt' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::setWriteFunction(std::function<void (std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)> const&)': /home/hy-20/project/MyTestHttp/main.cpp:46: undefined reference to `curl_easy_setopt' /usr/bin/ld: /home/hy-20/project/MyTestHttp/main.cpp:47: undefined reference to `curl_easy_setopt' /usr/bin/ld: CMakeFiles/MyTestHttp.dir/main.cpp.o: in function `Http::perform()': /home/hy-20/project/MyTestHttp/main.cpp:50: undefined reference to `curl_easy_perform' collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed.
05-30
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