从 LD 隐藏共享对象中的符号
我有两个第三方库偶尔会导出相同的符号名称。 当加载可执行文件时，ld 通常会选择错误的文件，从而导致崩溃。 我无法对这些库的内容做太多的事情，所以可能有一种方法可以指导 ld 如何找到正确的实现？
操作系统 - Solaris 10，我的程序是由 autoconf/autotools/gcc 构建的，冲突的库是 libclntsh（Oracle 驱动程序的一部分）和 OpenLDAP。 不幸的是，我无法使用 Oracle 的 LDAP 客户端实现 - 它缺乏 OpenLDAP 的许多功能。
编辑：链接如下：libclntsh.so->A.so->MAIN<-B.so<-libldap_r.so
I have two third-party libraries occasionally having the same symbol name exported. When the executable is loaded, ld usually picks the wrong one and I getting crash as a result. I cannot do too much about the content of these libraries, so may be there is a way to instruct ld how to find the proper imlementation ?
OS - Solaris 10, my program is built by autoconf/autotools/gcc, conflicting libraries are libclntsh (part of Oracle driver) and OpenLDAP. Unfortuinately, I cannot use Oracle's implementation of LDAP client - it lacks many features OpenLDAP has.
Edited: The linkage is as following: libclntsh.so->A.so->MAIN<-B.so<-libldap_r.so
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一种解决方案是将
LD_PRELOAD环境变量设置为其符号应优先的库。 （如果该库有自己的共享库依赖项，您可能需要预加载其所有依赖项；只需将 LD_PRELOAD 设置为依赖库列表，并用空格分隔。）One solution is to set the
LD_PRELOADenvironment variable to the library whose symbols should take precedence. (If that library has shared library dependencies of its own, you may need to preload all of its dependencies; just setLD_PRELOADto the list of dependent libraries, separated by spaces.)如果您不需要在编译时链接两个共享库（您的问题不清楚），则可以对共享库使用
-Bdirect。 这将记录共享库中找到它们的所有符号； 如果在运行时出现该符号的第二个定义（来自其他共享库），它将被忽略。If you don't need to link in both shared libraries at compile time (which isn't clear from your question), you can use
-Bdirectfor the shared library. This will record for all symbols from the shared library where they had been found; if then at run-time a second definition of the symbol appears (from the other shared library), it will be ignored.