libdl.so 动态库加载、查找

使用libdl.so库

动态库加载原理
 
动态库中函数的查找已经封装成 libdl.so,有4个函数:
dlopen  : 打开一个动态库
dlsym   : 在打开的动态库里找一个函数
dlclose : 关闭动态库
dlerror  : 返回错误
 
 

转载于:https://www.cnblogs.com/pjl1119/p/9814910.html

[root@PJDB-tpsgjk01 tpsg-ctp]# ldd main linux-vdso.so.1 (0x00007ffc2fff9000) libssl.so.3 => /lib64/libssl.so.3 (0x00007fc88cf70000) libcrypto.so.3 => /lib64/libcrypto.so.3 (0x00007fc88ca00000) libthosttraderapi_se.so => /lgh/tpsg-ctp/lib/libthosttraderapi_se.so (0x00007fc88be00000) libthostmduserapi_se.so => /lgh/tpsg-ctp/lib/libthostmduserapi_se.so (0x00007fc88b200000) librdkafka.so.1 => /lgh/tpsg-ctp/lib/librdkafka.so.1 (0x00007fc88ae00000) librdkafka++.so.1 => /lgh/tpsg-ctp/lib/librdkafka++.so.1 (0x00007fc88cf45000) libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007fc88aa00000) libm.so.6 => /lib64/libm.so.6 (0x00007fc88c925000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fc88cf28000) libc.so.6 => /lib64/libc.so.6 (0x00007fc88a600000) /lib64/ld-linux-x86-64.so.2 (0x00007fc88d065000) libz.so.1 => /lib64/libz.so.1 (0x00007fc88c90b000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fc88cf23000) librt.so.1 => /lib64/librt.so.1 (0x00007fc88cf1c000) libdl.so.2 => /lib64/libdl.so.2 (0x00007fc88c906000) libsasl2.so.3 => /lgh/tpsg-ctp/lib/libsasl2.so.3 (0x00007fc88c8e7000) libssl.so.1.1 => /lgh/tpsg-ctp/lib/libssl.so.1.1 (0x00007fc88bd6c000) libcrypto.so.1.1 => /lgh/tpsg-ctp/lib/libcrypto.so.1.1 (0x00007fc88a200000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fc88c8d3000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fc88bd32000) libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007fc88bcdc000) libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007fc88b126000) libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007fc88c8ba000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007fc88c8b3000) libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007fc88bccb000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007fc88bcc4000) libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fc88bc97000) libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007fc88ad64000) 不要libssl.so.3 和 libcrypto.so.3 !
最新发布
03-08
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