+
+
+##################################################################
+#
+# Recursive stuff
+#
+# This was once at the top of the file, allegedly because it was
+# needed for some targets, e.g. when building DLLs in libraries. But
+# since this reason is a little short on information, and I'm having
+# trouble with subdirectory builds happening before the current
+# directory when building hslibs (bad interaction with including
+# _hsc.o files in the cbits lib) so I'm moving the recursive makes to
+# the end --SDM 12/12/2001
+#
+##################################################################
+
+# Here are the diabolically clever rules that
+#
+# (a) for each "recursive target" <t>
+# propagates "make <t>" to directories in SUBDIRS
+#
+# (b) when SUBDIRS is empty,
+# for each "multi-way-target" <t>
+# calls "make way=w <t>" for each w in $(WAYS)
+#
+# This has the effect of making the standard target
+# in each of the specified ways (as well as in the normal way
+
+# Controlling variables
+# WAYS = extra (beyond the normal way) ways to build things in
+# SUBDIRS = subdirectories to recurse into
+
+# No ways, so iterate over the SUBDIRS
+
+# note about recursively invoking make: we'd like make to drop all the
+# way back to the top level if it fails in any of the
+# sub(sub-...)directories. This is done by setting the -e flag to the
+# shell during the loop, which causes an immediate failure if any of
+# the shell commands fail.
+
+# One exception: if the user gave the -i or -k flag to make in the
+# first place, we'd like to reverse this behaviour. So we check for
+# these flags, and set the -e flag appropriately. NOTE: watch out for
+# the --no-print-directory flag which is passed to recursive
+# invocations of make.
+#
+ifeq "$(way)" ""
+ifneq "$(SUBDIRS)" ""
+
+# we override the 'boot', 'all' and 'install' targets in the top
+# level Makefile. Some of the sub-projects also set 'boot' to empty.
+
+ifeq "$(NO_ALL_TARGET)" "YES"
+ALL_TARGET =
+else
+ALL_TARGET = all
+endif
+
+ifeq "$(NO_BOOT_TARGET)" "YES"
+BOOT_TARGET =
+else
+BOOT_TARGET = boot
+endif
+
+ifeq "$(NO_INSTALL_TARGET)" "YES"
+INSTALL_TARGET =
+INSTALL_DOCS_TARGET =
+else
+INSTALL_TARGET = install
+INSTALL_DOCS_TARGET = install-docs
+endif
+
+$(ALL_TARGET) docs runtests $(BOOT_TARGET) TAGS clean distclean mostlyclean maintainer-clean $(INSTALL_TARGET) $(INSTALL_DOCS_TARGET) html chm HxS ps dvi txt::
+ @echo "------------------------------------------------------------------------"
+ @echo "===fptools== Recursively making \`$@' in $(SUBDIRS) ..."
+ @echo "PWD = $(shell pwd)"
+ @echo "------------------------------------------------------------------------"
+# Don't rely on -e working, instead we check exit return codes from sub-makes.
+ @case '${MFLAGS}' in *-[ik]*) x_on_err=0;; *-r*[ik]*) x_on_err=0;; *) x_on_err=1;; esac; \
+ for i in $(SUBDIRS); do \
+ echo "------------------------------------------------------------------------"; \
+ echo "==fptools== $(MAKE) $@ $(MFLAGS);"; \
+ echo " in $(shell pwd)/$$i"; \
+ echo "------------------------------------------------------------------------"; \
+ $(MAKE) --no-print-directory -C $$i $(MFLAGS) $@; \
+ if [ $$? -eq 0 -o $$x_on_err -eq 0 ] ; then true; else exit 1; fi; \
+ done
+ @echo "------------------------------------------------------------------------"
+ @echo "===fptools== Finished making \`$@' in $(SUBDIRS) ..."
+ @echo "PWD = $(shell pwd)"
+ @echo "------------------------------------------------------------------------"
+
+endif
+endif
+
+#
+# Selectively building subdirectories.
+#
+#
+ifneq "$(SUBDIRS)" ""
+$(SUBDIRS) ::
+ $(MAKE) -C $@ $(MFLAGS)
+endif
+
+# -----------------------------------------------------------------------------
+# Further cleaning
+
+# Sometimes we want to clean things only after the recursve cleaning
+# has heppened (eg. if the files we're about to remove would affect
+# the recursive traversal).
+
+distclean::
+ rm -f $(LATE_DIST_CLEAN_FILES)
+
+maintainer-clean::
+ rm -f $(LATE_DIST_CLEAN_FILES)
+