The SUNW_ISA parameter in the pkginfo file identifies which instruction set architecture is associated with a Sun Microsystems package. The values are as follows:
sparcv9, for a package that contains 64–bit objects
sparc, for a package that contains 32–bit objects
For example, the SUNW_ISA value in a pkginfo file for a package containing 64–bit objects would be:
If SUNW_ISA is not set, the default instruction set architecture of the package is set to the value of the ARCH parameter.