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Thursday, March 6, 2008


On Solaris SPARC, the two separate dynamic linker programs for 32-bit applications and for 64-bit applications are: /usr/lib/ and /usr/lib/sparcv9/

In x86, for the AMD64 architecture, the dynamic linker programs for 32-bit applications and 64-bit applications are: /usr/lib/ and /usr/lib/amd64/

At runtime, both dynamic linkers search the same list of colon-separated directories specified by the LD_LIBRARY_PATH environment variable. However, the 32-bit dynamic linker binds only to 32-bit libraries, while the 64-bit dynamic linker binds only to 64-bit libraries. So directories containing both 32-bit and 64-bit libraries can be specified via LD_LIBRARY_PATH, if needed.

The 64-bit dynamic linker's search path can be completely overridden using the LD_LIBRARY_PATH_64 environment variable.

If both LD_LIBRARY_PATH and LD_LIBRARY_PATH_64 are defined, 32-bit linking will be done using LD_LIBRARY_PATH, and 64-bit linking with LD_LIBRARY_PATH_64.

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