/usr/bin/ld: /lib/libgrpc.so.9: undefined reference to `BIO_pending'

这个错误是由于在链接过程中找不到`BIO_pending`函数的定义而引起的。`BIO_pending`函数是OpenSSL库中的一个函数，用于获取BIO对象中待处理的数据大小。

要解决这个错误，你需要确保在链接时正确地包含了OpenSSL库。可以通过在编译命令中添加`-lssl -lcrypto`选项来链接OpenSSL库。例如：

gcc your_file.c -o your_program -lssl -lcrypto

另外，还需要确保OpenSSL库已经正确安装在系统中，并且库文件路径正确配置。

相关问题

mpicc -o ../../bin/lsqfit main.o lsqfit_ls.o block_init.o line.o -L../../lib -ldblock -ldutil /home/ubuntu/software/tcl/tcl8.5.11/lib/libtcl8.5.so -lm -lc /usr/bin/ld: main.o: in function `main': main.c:(.text+0x239): undefined reference to `blk_open_file' /usr/bin/ld: main.c:(.text+0x499): undefined reference to `blk_open_file' /usr/bin/ld: main.c:(.text+0x5e3): undefined reference to `blk_open_file' /usr/bin/ld: main.c:(.text+0x8f9): undefined reference to `blk_open_file' /usr/bin/ld: ../../lib/libdblock.a(skip.o): in function `blk__skip': skip.c:(.text+0xed): undefined reference to `blk__getlines' /usr/bin/ld: skip.c:(.text+0x126): undefined reference to `blk__getlines' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_init_read': read.c:(.text+0x15): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_read_blk': read.c:(.text+0x6a): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_read_data': read.c:(.text+0xad): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk__read_data': read.c:(.text+0x119): undefined reference to `blk__getlines' /usr/bin/ld: read.c:(.text+0x1b2): undefined reference to `blk__getlines' /usr/bin/ld: read.c:(.text+0x1e5): undefined reference to `blk__getlines' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_read_check': read.c:(.text+0x398): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_read_blk_check': read.c:(.text+0x3d6): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk__read_check': read.c:(.text+0x49b): undefined reference to `blk__getlines' /usr/bin/ld: read.c:(.text+0x788): undefined reference to `blk__getlines' /usr/bin/ld: ../../lib/libdblock.a(read.o): in function `blk_print_env': read.c:(.text+0xbdf): undefined reference to `blk__getenv' /usr/bin/ld: ../../lib/libdblock.a(variable

这个错误提示是链接器（ld）在链接时找不到某些函数或变量的定义，而这些函数或变量的定义应该在libdblock库中。你需要检查一下编译和链接的命令行中，是否正确地包含了libdblock库，并且是否链接了该库。你可以尝试在编译命令行中添加“-ldbloc”选项，指示链接器链接该库。如果问题仍然存在，你可能需要检查一下该库是否正确地安装了，并且是否包含了需要的函数和变量的定义。

[ 92%] Building CXX object CMakeFiles/app_yolov8.dir/app_yolov8.cpp.o [100%] Linking CXX executable app_yolov8 /usr/bin/ld: /usr/lib/x86_64-linux-gnu/librsvg-2.so.2: undefined reference to `cairo_tag_end' /usr/bin/ld: /usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_generate@UUID_1.0' /usr/bin/ld: /usr/lib/x86_64-linux-gnu/librsvg-2.so.2: undefined reference to `cairo_tag_begin' /usr/bin/ld: /usr/lib/x86_64-linux-gnu/librsvg-2.so.2: undefined reference to `cairo_font_options_get_variations' /usr/bin/ld: /usr/lib/x86_64-linux-gnu/libSM.so.6: undefined reference to `uuid_unparse_lower@UUID_1.0' collect2: error: ld returned 1 exit status

这是一个编译错误，看起来是由于缺少依赖库引起的。其中，缺少的库包括librsvg-2.so.2和libSM.so.6。您需要安装这些库以解决此错误。您可以使用以下命令安装这些库：

sudo apt-get install librsvg2-2 libsm6

如果这些库已经安装了，您可以尝试重新安装它们以解决此问题。