### @configure_input@
-# Copyright (C) 1985, 1987-1988, 1993-1995, 1999-2014 Free Software
-# Foundation, Inc.
+# Copyright (C) 1985, 1987-1988, 1993-1995, 1999-2014
+# Free Software Foundation, Inc.
# This file is part of GNU Emacs.
$(WINDRES) -O COFF --include-dir=$(srcdir)/../nt \
-o $@ $(ntsource)/emacs.rc
+.PHONY: ns-app
ns-app: emacs$(EXEEXT)
$(MAKE) -C ../nextstep all
.PHONY: versionclean extraclean
mostlyclean:
- rm -f temacs$(EXEEXT) core *.core \#* *.o libXMenu11.a liblw.a
+ rm -f temacs$(EXEEXT) core *.core \#* *.o
rm -f ../etc/DOC
rm -f bootstrap-emacs$(EXEEXT) emacs-$(version)$(EXEEXT)
rm -f buildobj.h
## such as loaddefs.el or *.elc can typically be produced by any old
## Emacs executable, so we would like to avoid rebuilding them whenever
## we build a new Emacs executable.
+##
+## (In other words, changing a single file src/foo.c would force
+## dumping a new bootstrap-emacs, then re-byte-compiling all preloaded
+## elisp files, and only then dump the actual src/emacs, which is not
+## wrong, but is overkill in 99.99% of the cases.)
+##
## To solve the circularity, we use 2 different Emacs executables,
## "emacs" is the main target and "bootstrap-emacs" is the one used
## to build the *.elc and loaddefs.el files.
-## To solve the freshness issue, we used to use a third file "witness-emacs"
-## which was used to witness the fact that there is a bootstrap-emacs
-## executable, and then have dependencies on witness-emacs rather than
-## bootstrap-emacs, but that lead to problems in parallel builds (because
-## witness-emacs needed to be free from dependencies (to avoid rebuilding
-## it), so it was compiled in parallel, leading typically to having 2
-## processes dumping bootstrap-emacs at the same time).
-## So instead, we replace the witness-emacs dependencies by conditional
-## bootstrap-dependencies (via $(BOOTSTRAPEMACS)). Of course, since we do
-## not want to rely on GNU Make features, we have to rely on an external
-## script to do the conditional part of the dependency
-## (i.e. see the $(SUBDIR) rule ../Makefile.in).
-
-.SUFFIXES: .elc .el
-
-## These suffix rules do not allow additional dependencies, sadly, so
-## instead of adding a $(BOOTSTRAPEMACS) dependency here, we add it
-## separately below.
-## With GNU Make, we would just say "%.el : %.elc $(BOOTSTRAPEMACS)"
-.el.elc:
- @$(MAKE) -C ../lisp compile-onefile THEFILE=$< EMACS="$(bootstrap_exe)"
+## To solve the freshness issue, in the past we tried various clever tricks,
+## but now that we require GNU make, we can simply specify
+## bootstrap-emacs$(EXEEXT) as an order-only prerequisite.
-## Since the .el.elc rule cannot specify an extra dependency, we do it here.
-$(lisp): $(BOOTSTRAPEMACS)
+%.elc: %.el | bootstrap-emacs$(EXEEXT)
+ @$(MAKE) -C ../lisp compile-onefile THEFILE=$< EMACS="$(bootstrap_exe)"
## VCSWITNESS points to the file that holds info about the current checkout.
## We use it as a heuristic to decide when to rebuild loaddefs.el.
## If empty it is ignored; the parent makefile can set it to some other value.
VCSWITNESS =
-$(lispsource)/loaddefs.el: $(BOOTSTRAPEMACS) $(VCSWITNESS)
+$(lispsource)/loaddefs.el: $(VCSWITNESS) | bootstrap-emacs$(EXEEXT)
$(MAKE) -C ../lisp autoloads EMACS="$(bootstrap_exe)"
## Dump an Emacs executable named bootstrap-emacs containing the