+#
+# Recursive stuff
+#
+# At the top of the file so that recursive makes happen before
+# makes in the main directory. This is needed for some targets,
+# e.g. when building DLLs in hslibs.
+#
+##################################################################
+
+# 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.
+#
+# NOTE: Truly weird use of exit below to stop the for loop dead in
+# its tracks should any of the sub-makes fail. By my reckoning,
+# "cmd || exit $?" should be equivalent to "cmd"
+
+ifneq "$(SUBDIRS)" ""
+
+all docs runtests boot TAGS clean veryclean maintainer-clean install info html 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 = $(shell pwd)"
+ @echo "------------------------------------------------------------------------"
+
+dist ::
+# Don't rely on -e working, instead we check exit return codes from sub-makes.
+ @case '${MFLAGS}' in *-[ik]*) x_on_err=0;; *-r*[ik]*) x_on_err=0;; *) x_on_err=1;; esac; \
+ for i in $(SUBDIRS) ; do \
+ $(MKDIRHIER_PREFIX)mkdirhier $(SRC_DIST_DIR)/$$i; \
+ $(MAKE) -C $$i $(MFLAGS) $@ SRC_DIST_DIR=$(SRC_DIST_DIR)/$$i; \
+ if [ $$? -eq 0 ] ; then true; else exit $$x_on_err; fi; \
+ done
+endif
+
+# The default dist rule:
+#
+# copy/link the contents of $(SRC_DIST_FILES) into the
+# shadow distribution tree. SRC_DIST_FILES contain the
+# build-generated files that you want to include in
+# a source distribution.
+#
+#
+ifneq "$(SRC_DIST_FILES)" ""
+dist::
+ @for i in $(SRC_DIST_FILES); do \
+ if ( echo "$$i" | grep "~" >/dev/null 2>&1 ); then \
+ echo $(LN_S) `pwd`/`echo $$i | sed -e "s/^\([^~]*\)~.*/\1/g"` $(SRC_DIST_DIR)/`echo $$i | sed -e "s/.*~\(.*\)/\1/g"` ; \
+ $(LN_S) `pwd`/`echo $$i | sed -e "s/^\([^~]*\)~.*/\1/g"` $(SRC_DIST_DIR)/`echo $$i | sed -e "s/.*~\(.*\)/\1/g"` ; \
+ else \
+ if (test -f "$$i"); then \
+ echo $(LN_S) `pwd`/$$i $(SRC_DIST_DIR)/$$i ; \
+ $(LN_S) `pwd`/$$i $(SRC_DIST_DIR)/$$i ; \
+ fi; \
+ fi; \
+ done;
+endif
+
+
+#
+# Selectively building subdirectories.
+#
+#
+ifneq "$(SUBDIRS)" ""
+$(SUBDIRS) ::
+ $(MAKE) -C $@ $(MFLAGS)
+endif
+
+ifneq "$(WAYS)" ""
+ifeq "$(way)" ""
+
+# NB: the targets exclude
+# boot info TAGS runtests
+# since these are way-independent
+all docs TAGS clean veryclean maintainer-clean install ::
+ @echo "------------------------------------------------------------------------"
+ @echo "===fptools== Recursively making \`$@' for ways: $(WAYS) ..."
+ @echo "PWD = $(shell pwd)"
+ @echo "------------------------------------------------------------------------"
+# Don't rely on -e working, instead we check exit return codes from sub-makes.
+ @case '${MFLAGS}' in *-[ik]*) x_on_err=0;; *-r*[ik]*) x_on_err=0;; *) x_on_err=1;; esac; \
+ for i in $(WAYS) ; do \
+ echo "------------------------------------------------------------------------"; \
+ echo "==fptools== $(MAKE) way=$$i $@;"; \
+ echo "PWD = $(shell pwd)"; \
+ echo "------------------------------------------------------------------------"; \
+ $(MAKE) way=$$i --no-print-directory $(MFLAGS) $@ ; \
+ if [ $$? -eq 0 ] ; then true; else exit $$x_on_err; fi; \
+ done
+ @echo "------------------------------------------------------------------------"
+ @echo "===fptools== Finished recursively making \`$@' for ways: $(WAYS) ..."
+ @echo "PWD = $(shell pwd)"
+ @echo "------------------------------------------------------------------------"
+
+endif
+endif
+
+##################################################################