Linux c++ error: undefined reference to 'dlopen' 解决办法

当在Linux环境下使用Eclipse进行C++开发并试图引入外部库时,可能会遇到编译错误提示'dlopen'未定义引用。此文章详细解释了如何通过在链接器选项中添加'-ldl'来解决该问题。

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幸福来得太突然:http://stackoverflow.com/questions/956640/linux-c-error-undefined-reference-to-dlopen


 work in Linux with c++ (eclipse) and want to use a library. Eclipse shows me an error: undefined reference to 'dlopen'




You have to link against libdl, add

-ldl

to your linker options


/usr/bin/ld: warning: libopencv_core.so.410, needed by /home/ZHL/test/libs/libizkDevDriver.so, not found (try using -rpath or -rpath-link) /usr/bin/ld: warning: libopencv_videoio.so.410, needed by /home/ZHL/test/libs/libizkDevDriver.so, not found (try using -rpath or -rpath-link) /usr/bin/ld: warning: liblscdriver.so, needed by /home/ZHL/test/libs/libsane-lscsane.so, not found (try using -rpath or -rpath-link) /usr/bin/ld: warning: liblang.so, needed by /home/ZHL/test/libs/libsane-lscsane.so, not found (try using -rpath or -rpath-link) /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_err_description' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_initialize' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_err_name' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_set_sane_info' /usr/bin/ld: /home/ZHL/test/libs/libizkDevDriver.so: undefined reference to `cv::Mat::Mat()' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_open' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `from_default_language' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_uninitialize' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_close' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_read_img_data' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `lang_refresh_language' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_get_parameter' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_log_is_enable' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `lang_initialize' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_stop' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `get_file_path' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_set_parameter' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `lang_load_string' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_log' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_get_current_time' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `register_language_changed_notify' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_enum' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_control' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_start' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `lang_get_cur_code_page' /usr/bin/ld: /home/ZHL/test/libs/libsane-lscsane.so: undefined reference to `hg_scanner_get_img_info' collect2: error: ld returned 1 exit status
最新发布
07-01
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