When I run
当我跑
ldd ./myprogram
it shows:
表明：
...
libstdc++.so.6 => /usr/lib64/stdc++.so.6
libm.so.6 => /lib64/libm.so.6
...
/usr/lib64 is not in my LD_LIBRARY_PATH, how does it finds /usr/lib64? When I link 'myprgrom', it was linking libraries from ${HOME}/mynewgcc/.../lib64.
/ usr / lib64不在我的LD_LIBRARY_PATH中，它是如何找到/ usr / lib64的？当我链接'myprgrom'时，它链接了来自$ {HOME} / mynewgcc /.../ lib64的库。
1 个解决方案
#1
1
The ldconfig program builds a cache for ld.so (called by ldd) or ld-linux.so. Shared objects in /etc/ld.so.conf and /etc/ld.so.conf.d get added to this cache. These paths are cached to allow for faster lookup (as opposed to looking at arbitrary places in the filesystem like LD_LIBRARY_PATH). There are certain defaults for ldconfig as well, namely /lib, /lib64, /usr/lib, and /usr/lib64 (the "trusted" directories) which get added to the directories in the config files (unless ldconfig -n is specified).
ldconfig程序为ld.so（由ldd调用）或ld-linux.so构建缓存。 /etc/ld.so.conf和/etc/ld.so.conf.d中的共享对象将添加到此缓存中。这些路径被缓存以允许更快的查找（而不是查看文件系统中的任意位置，如LD_LIBRARY_PATH）。 ldconfig也有一些默认值，即/ lib，/ lib64，/ usr / lib和/ usr / lib64（“可信”目录），它们被添加到配置文件中的目录中（除非指定了ldconfig -n） ）。
#1
1
The ldconfig program builds a cache for ld.so (called by ldd) or ld-linux.so. Shared objects in /etc/ld.so.conf and /etc/ld.so.conf.d get added to this cache. These paths are cached to allow for faster lookup (as opposed to looking at arbitrary places in the filesystem like LD_LIBRARY_PATH). There are certain defaults for ldconfig as well, namely /lib, /lib64, /usr/lib, and /usr/lib64 (the "trusted" directories) which get added to the directories in the config files (unless ldconfig -n is specified).
ldconfig程序为ld.so（由ldd调用）或ld-linux.so构建缓存。 /etc/ld.so.conf和/etc/ld.so.conf.d中的共享对象将添加到此缓存中。这些路径被缓存以允许更快的查找（而不是查看文件系统中的任意位置，如LD_LIBRARY_PATH）。 ldconfig也有一些默认值，即/ lib，/ lib64，/ usr / lib和/ usr / lib64（“可信”目录），它们被添加到配置文件中的目录中（除非指定了ldconfig -n） ）。