Some quick comments. I'm in a hurry. And before I forget:
thanks for working on this.
* LIBOBJDIR seems worthy to document from the Autoconf user perspective.
Non-automake might also benefit from this; and we should avoid using
undocumented interfaces in Automake.
* The Automake manual should be updated at least in two places:
- the place where it documents all the macros that can
affect its behavior (your patch causes
AC_CONFIG_LIBOBJ_DIR to have a stronger semantic when used
with Automake than when used with only Autoconf).
- the section about how LIBOBJS is used.
* The comment in _AC_LIBOBJS_NORMALIZE seems misleading to me,
because LIBOBJDIR is unrelated to the macro
AC_CONFIG_LIBOBJ_DIR as far as Autoconf is concerned.
AC_CONFIG_LIBOBJ_DIR specifies where the *sources* files are.
LIBOBJDIR is a prefix variable the user can use to relocate
the *object* files. This is not necessary the same place.
* Autoconf needs to be adjusted to reflect the fact that
Automake scans a new macro. See the comment above the %traced
variable you modified in scan_autoconf_trace.
* Better write ${LIBOBJDIR} instead of $(LIBOBJDIR) in @LIBOBJS@
(for the same reason we use ${prefix}, etc.)
* Use $PERL, not perl.
* AFAICT your patch assumes that users use option `subdir-objects' when
using @LIBOBJS@ remotely. I think we should also support the other case.
I suggest you don't bother with the last point unless it looks
easy to you. I'll probably find some time this week-end or next
week.
--
Alexandre Duret-Lutz
