* Rewrite src/tools Make logic to work like the rest of the tree wrt
"dependall" and "install". The old "make build" hack is gone.
* Remove the MKTOOLS logic. This was linked to the "make build" hack,
and was only needed because TOOLDIR originally had no writable default.
* Redo the GNU configure/make logic to make it fit reasonably in a
BSD make wrapper. Use new ${.ALLTARGETS} variable to scan for
targets in $(srcdir), and mark them with .MADE: to prevent rebuilding.
* Only build cross tools in src/tools; remove some messy logic in
src/usr.* and src/gnu/usr.* that would do target filename rewriting
(improves consistency and readability).
* Add the ability to build cross gdb at tool build time by setting
MKCROSSGDB (default no) to "yes" in mk.conf.
* Add src/tools/groff and set up paths to work with this cross groff.
Instead of skipping the PWD check entirely, add a skip of the PWD override
if MAKEOBJDIR is set and contains a variable transform ($). This has
similar problems to what happens if MAKEOBJDIRPREFIX is set.
file will strip any leading path on the filename when searching ${.CURDIR}.
This bug manifested itself more prominently with xsrc/xfree/xc/lib/GL/GL,
since we now always search ${.CURDIR} as an alternative to ${.OBJDIR}
(PR bin/14499).
breaks too many situations, including MAKEOBJDIR with a :C,foo,bar,
transform in many cases. It's ambiguous and unreliable, as the comment
above that code always indicated. In order to have reliable objdirs, they
need to work the same way Every Time.
(Note that taking this out is not a performance hit; we were already doing
the getcwd() call first. So the getenv("PWD") didn't increase performance.)
* Replace chdir_verify_path() with Main_SetObjdir(), which can be called
externally, and can take a "const char *". (There's a lot of non-const
"char *" passing around in var.c of what should be const strings....)
* Rewrite the initial "find my .OBJDIR" code to make use of the new
function. This still functions as it had in the past, but the comment
above this block was changed to reflect reality: if MAKEOBJDIRPREFIX
or MAKEOBJDIR are set in the environment, then *only that value* is
tried; make does not fall back to obj.MACHINE, obj, and /usr/obj/`pwd`
as it would without these env vars set.
* Add a new special target, .OBJDIR:, which when parsed will cause make to
change to a new object directory and reset .OBJDIR, and PWD in the
environment. This will allow some makefiles (mainly, src/tools)
to override the default objdir semantics in order to add custom logic.
(This splits out the "default system include paths" into its own Lst
variable, and uses it only if sysIncPath is empty. This allows sysIncPath
to be filled in by the Makefile itself.)
aren't going to do anything with the information anyway and there is
error checking later anyway.
We can now succeed in creating symlinks to locations that don't exist,
just as ln -s will let us do, and we can use install instead of ln -s
in several Makefiles. The code was written with the obvious intent to
let you do this but apparently it was never tested.
