COMPAT_NETBSD32(8)					    BSD System Manager's Manual 					COMPAT_NETBSD32(8)

NAME

     compat_netbsd32 -- setup procedure for 32-bit compatibility on 64-bit platforms

DESCRIPTION

     The compat_netbsd32 module allows NetBSD/sparc64 to run NetBSD/sparc executables, and NetBSD/amd64 to run NetBSD/i386 executables.

     To use compat_netbsd32, one must either have COMPAT_NETBSD32 and EXEC_ELF32 in the kernel, or load the compat_netbsd32 and exec_netbsd32 ker-
     nel modules.

     Static executables typically need no additional setup.  Dynamic binaries require the dynamic linker plus shared libraries.  Most of these
     files will need to be placed under /emul/netbsd32.

     The easiest method of installing support for these is via the emulators/netbsd32_compat14, emulators/netbsd32_compat15, and
     emulators/netbsd32_compat16 packages, provided in the NetBSD packages collection.	These install 32-bit a.out and ELF compatibility
     libraries, respectively.  The details of what is actually necessary for correct operation are given below.  This obviously is handled by the
     emulator packages.

     For a.out compatibility, /usr/libexec/ld.so from a 32-bit distribution is required to exist as /emul/netbsd32/usr/libexec/ld.so.  For 32-bit
     ELF compatibility, /usr/libexec/ld.elf_so needs to be in /emul/netbsd32/usr/libexec/ld.elf_so.

     The shared libraries for a.out binaries do not live under the /emul/netbsd32 directory, but under the /emul/aout directory, where the a.out
     dynamic linker will find them.

BUGS

     A list of things which fail to work in compatibility mode should be here.

     IPC is not well supported.

     sysctl(3) is not well supported.

BSD
								  March 11, 2006							       BSD