* config/i386/nm-i386sol2.h (USE_PROC_FS): Do not define. * config/mips/nm-irix5.h (USE_PROC_FS): Do not define. * config/nm-linux.h (USE_PROC_FS): Do not undefine. doc/ChangeLog: * gdbint.texinfo (Native Conditionals): Remove USE_PROC_FS.