Break out the rules which generate crunchgen'ed binaries into a separate

.mk file so they can be reused.

Introduce a new option, CRUNCH_BUILDTOOLS, which lists the binaries that
require tools built in the local architecture. sh and csh both require this.
It was previously hardcoded in rescue/rescue/Makefile .

Introduce a new option, CRUNCH_SHLIBS, which lists the shared libraries
to link against. These override the static libraries listed in CRUNCH_LIBS.
Some build environments may wish to use a handful of shared libraries
(eg libc.so) so other small, dynamic binaries can be run in the environment.

Remove the now-shared code from rescue/rescue/Makefile and introduce the
CRUNCH_BUILDTOOLS option for the above shells.

1 files changed, 160 insertions, 0 deletions

diff --git a/share/mk/bsd.crunchgen.mk b/share/mk/bsd.crunchgen.mk
new file mode 100644
index 0000000..565b112
--- /dev/null
+++ b/share/mk/bsd.crunchgen.mk
@@ -0,0 +1,160 @@
+#################################################################
+#
+# General notes:
+#
+# A number of Make variables are used to generate the crunchgen config file.
+#
+#  CRUNCH_SRCDIRS: lists directories to search for included programs
+#  CRUNCH_PROGS:  lists programs to be included
+#  CRUNCH_LIBS:  libraries to statically link with
+#  CRUNCH_SHLIBS:  libraries to dynamically link with
+#  CRUNCH_BUILDOPTS: generic build options to be added to every program
+#  CRUNCH_BUILDTOOLS: lists programs that need build tools built in the
+#       local architecture.
+#
+# Special options can be specified for individual programs
+#  CRUNCH_SRCDIR_$(P): base source directory for program $(P)
+#  CRUNCH_BUILDOPTS_$(P): additional build options for $(P)
+#  CRUNCH_ALIAS_$(P): additional names to be used for $(P)
+#
+# By default, any name appearing in CRUNCH_PROGS or CRUNCH_ALIAS_${P}
+# will be used to generate a hard link to the resulting binary.
+# Specific links can be suppressed by setting
+# CRUNCH_SUPPRESS_LINK_$(NAME) to 1.
+#
+
+# $FreeBSD$
+
+##################################################################
+#  The following is pretty nearly a generic crunchgen-handling makefile
+#
+
+CONF=	$(PROG).conf
+OUTMK=	$(PROG).mk
+OUTC=   $(PROG).c
+OUTPUTS=$(OUTMK) $(OUTC) $(PROG).cache
+CRUNCHOBJS= ${.OBJDIR}
+.if defined(MAKEOBJDIRPREFIX)
+CANONICALOBJDIR:= ${MAKEOBJDIRPREFIX}${.CURDIR}
+.else
+CANONICALOBJDIR:= /usr/obj${.CURDIR}
+.endif
+
+CLEANFILES+= $(CONF) *.o *.lo *.c *.mk *.cache *.a *.h
+
+# Program names and their aliases contribute hardlinks to 'rescue' executable,
+# except for those that get suppressed.
+.for D in $(CRUNCH_SRCDIRS)
+.for P in $(CRUNCH_PROGS_$(D))
+.ifdef CRUNCH_SRCDIR_${P}
+$(OUTPUTS): $(CRUNCH_SRCDIR_${P})/Makefile
+.else
+$(OUTPUTS): $(.CURDIR)/../../$(D)/$(P)/Makefile
+.endif
+# Disable building links for bsdbox - whatever is installing the binaries into
+# the embedded system should (for now) do the linking there. This may change
+# in the future. -adrian
+#.ifndef CRUNCH_SUPPRESS_LINK_${P}
+#LINKS+= $(BINDIR)/$(PROG) $(BINDIR)/$(P)
+#.endif
+#.for A in $(CRUNCH_ALIAS_$(P))
+#.ifndef CRUNCH_SUPPRESS_LINK_${A}
+#LINKS+= $(BINDIR)/$(PROG) $(BINDIR)/$(A)
+#.endif
+#.endfor
+.endfor
+.endfor
+
+all: $(PROG)
+exe: $(PROG)
+
+$(CONF): Makefile
+	echo \# Auto-generated, do not edit >$(.TARGET)
+.ifdef CRUNCH_BUILDOPTS
+	echo buildopts $(CRUNCH_BUILDOPTS) >>$(.TARGET)
+.endif
+.ifdef CRUNCH_LIBS
+	echo libs $(CRUNCH_LIBS) >>$(.TARGET)
+.endif
+.ifdef CRUNCH_SHLIBS
+	echo libs_so $(CRUNCH_SHLIBS) >>$(.TARGET)
+.endif
+.for D in $(CRUNCH_SRCDIRS)
+.for P in $(CRUNCH_PROGS_$(D))
+	echo progs $(P) >>$(.TARGET)
+.ifdef CRUNCH_SRCDIR_${P}
+	echo special $(P) srcdir $(CRUNCH_SRCDIR_${P}) >>$(.TARGET)
+.else
+	echo special $(P) srcdir $(.CURDIR)/../../$(D)/$(P) >>$(.TARGET)
+.endif
+.ifdef CRUNCH_BUILDOPTS_${P}
+	echo special $(P) buildopts DIRPRFX=${DIRPRFX}${P}/ \
+	    $(CRUNCH_BUILDOPTS_${P}) >>$(.TARGET)
+.else
+	echo special $(P) buildopts DIRPRFX=${DIRPRFX}${P}/ >>$(.TARGET)
+.endif
+.for A in $(CRUNCH_ALIAS_$(P))
+	echo ln $(P) $(A) >>$(.TARGET)
+.endfor
+.endfor
+.endfor
+
+# XXX Make sure we don't pass -P to crunchgen(1).
+.MAKEFLAGS:= ${.MAKEFLAGS:N-P}
+.ORDER: $(OUTPUTS) objs
+$(OUTPUTS): $(CONF)
+	MAKEOBJDIRPREFIX=${CRUNCHOBJS} crunchgen -fq -m $(OUTMK) \
+	    -c $(OUTC) $(CONF)
+
+$(PROG): $(OUTPUTS) objs
+	MAKEOBJDIRPREFIX=${CRUNCHOBJS} ${MAKE} -f $(OUTMK) exe
+
+objs: $(OUTMK)
+	MAKEOBJDIRPREFIX=${CRUNCHOBJS} ${MAKE} -f $(OUTMK) objs
+
+# <sigh> Someone should replace the bin/csh and bin/sh build-tools with
+# shell scripts so we can remove this nonsense.
+build-tools:
+.for _tool in $(CRUNCH_BUILDTOOLS)
+	cd $(.CURDIR)/../../${_tool}; \
+	MAKEOBJDIRPREFIX=${CRUNCHOBJS} ${MAKE} obj; \
+	MAKEOBJDIRPREFIX=${CRUNCHOBJS} ${MAKE} build-tools
+.endfor
+
+# Use a separate build tree to hold files compiled for this crunchgen binary
+# Yes, this does seem to partly duplicate bsd.subdir.mk, but I can't
+# get that to cooperate with bsd.prog.mk.  Besides, many of the standard
+# targets should NOT be propagated into the components.
+cleandepend cleandir obj objlink:
+.for D in $(CRUNCH_SRCDIRS)
+.for P in $(CRUNCH_PROGS_$(D))
+.ifdef CRUNCH_SRCDIR_${P}
+	cd ${CRUNCH_SRCDIR_$(P)} && \
+	    MAKEOBJDIRPREFIX=${CANONICALOBJDIR} ${MAKE} \
+	    DIRPRFX=${DIRPRFX}${P}/ ${CRUNCH_BUILDOPTS} ${.TARGET}
+.else
+	cd $(.CURDIR)/../../${D}/${P} && \
+	    MAKEOBJDIRPREFIX=${CANONICALOBJDIR} ${MAKE} \
+	    DIRPRFX=${DIRPRFX}${P}/ ${CRUNCH_BUILDOPTS} ${.TARGET}
+.endif
+.endfor
+.endfor
+
+clean:
+	rm -f ${CLEANFILES}
+	if [ -e ${.OBJDIR}/$(OUTMK) ]; then				\
+		MAKEOBJDIRPREFIX=${CRUNCHOBJS} ${MAKE} -f $(OUTMK) clean;	\
+	fi
+.for D in $(CRUNCH_SRCDIRS)
+.for P in $(CRUNCH_PROGS_$(D))
+.ifdef CRUNCH_SRCDIR_${P}
+	cd ${CRUNCH_SRCDIR_$(P)} && \
+	    MAKEOBJDIRPREFIX=${CANONICALOBJDIR} ${MAKE} \
+	    DIRPRFX=${DIRPRFX}${P}/ ${CRUNCH_BUILDOPTS} ${.TARGET}
+.else
+	cd $(.CURDIR)/../../${D}/${P} && \
+	    MAKEOBJDIRPREFIX=${CANONICALOBJDIR} ${MAKE} \
+	    DIRPRFX=${DIRPRFX}${P}/ ${CRUNCH_BUILDOPTS} ${.TARGET}
+.endif
+.endfor
+.endfor