Solaris是如何决定库路径的？

Question

在Solaris上，我可以使用crle命令配置库路径，如下所示：

crle -c /var/ld/ld.config -l /lib:/usr/lib:/usr/local/lib:/opt/DSI/32

我还可以使用传统的LD_LIBRARY_PATH方法，如：

LD_LIBRARY_PATH="/export/home/donald/mysql-5.0.91-installed/lib/mysql/:/lib:/usr/lib"

Solaris是如何决定库路径的？例如，Solaris是否首先从crle path中选择，然后从LD_LIBRARY_PATH中进行选择？我试着google，但找不到答案。

Answer 1

答案在手册(ManL.D.so.1)中。

 The runtime linker uses a prescribed search path for  locat-
 ing  the  dynamic  dependencies  of  an  object. The default
 search paths are the runpath recorded in  the  object,  fol-
 lowed  by  a  series  of  defaults.  For 32-bit objects, the
 defaults are /lib followed by /usr/lib. For 64-bit  objects,
 the  defaults  are  /lib/64  followed  by /usr/lib/64. These
 defaults component can be  modified  using  a  configuration
 file  that is created with crle(1). The runpath is specified
 when the dynamic object is constructed using the  -R  option
 to  ld(1).  The  environment variable LD_LIBRARY_PATH can be
 used to indicate  directories  to  be  searched  before  the
 default directories.

因此，命令是：

1. LD_LIBRARY_PATH
2. 共享对象RPATH
3. crle默认值