1 $NetBSD: README.mknative,v 1.3 2006/11/23 23:31:00 uwe Exp $
3 This file describes how to use the cross-compiler to generate the
4 native files for GDB on a target platform.
6 NOTE: DO NOT RUN "mknative" BY HAND! It requires the Makefile in this
7 directory to set up certain environments first.
9 Since libc's features change over time, the config.h files can change as a
10 result; thus the instructions below are the same no matter whether
11 bootstrapping on a cross or native host. This is important: even on a
12 "native" host, you should bootstrap the toolchain by building from an
13 up-to-date source tree to a $DESTDIR using the exact same instructions.
15 In these notes, MACHINE is the $MACHINE of the target. These files can be
16 cross-generated. Though a $MACHINE_ARCH all uses the same config files, you
17 must pick a specific $MACHINE so that building the requisite bits below will
20 1. Set MKMAINTAINERTOOLS=yes in mk.conf. (Needed so that src/tools/gettext
21 gets built, eliciting proper HAVE_*GETTEXT* defns in config.h files.)
23 2. Build and install a cross toolchain (via "build.sh -m MACHINE tools").
25 3. At top level, do "nbmake-MACHINE do-distrib-dirs obj includes".
27 4. In src/gnu/lib/crtstuff4 do "nbmake-MACHINE depend all install"
29 5. In src/lib/csu, src/gnu/lib/libgcc4, and src/lib, do
30 "nbmake-MACHINE all install".
32 6. In src/tools/gdb, do "nbmake-MACHINE obj native-gdb".
34 This will do a full configury in ${.OBJDIR}/.native that is a "Canadian"
35 cross toolchain (--build reflects the host platform, but --host and
36 --target are the target). The result is a tree that would build a
37 native-to-NetBSD GDB on a cross host, and mknative pulls glue data
40 NOTE: this step writes files under src/gnu/usr.bin/gdb6, so you
41 need to do it in a writable src tree!
43 7. Try out a full build using "nbmake-MACHINE" in
44 src/gnu/usr.bin/gdb6; the result should include a native GDB.
46 8. If all is well, commit the glue files and directories added to