今天在使用redis的的C库hiredis时,遇到一个小问题,折腾了半天。
大概是这样的,编译安装hiredis,make PREFIX=/usr install,然后,编译我的代码,都没有问题,但是,启动编译后的应用程序时,报错:
error while loading shared libraries: libhiredis.so.0.10: cannot open shared object file: No such file or directory
在网上查了一下,需要更新一下库的cache,执行命令:
ldconfig /usr/lib/
查了一下ldconfig的帮助,是这么说的:
ldconfig creates the necessary links and cache to the most recent shared libraries found in the directories specified on the command line, in the file /etc/ld.so.conf, and in the trusted directories (/lib and /usr/lib). The cache is used by the run-time linker, ld.so or ld-linux.so. ldconfig checks the header and filenames of the libraries it encounters when determining which versions should have their links updated.
我的理解是这样的:
由于/etc/ld.so.cache没更新,而程序启动时,会去/etc/ld.so.cache来查找所要用的库,所以出现一开始的错误。
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