#
# $Revision: 1.12 $
#
# Commonrules for library top level makefiles
# Handle:
#	MULTIDIR - library has no source at top level, all source
#		   is under BASELIBSRCDIR (without the .a)
#	ALTLIBS  - library has alternate compilation forms
#		   this REQUIRES a multiple directory setup for source
#

.PRECIOUS:$(TARGETS)

#if (defined(MULTIDIR) || (defined(ALTLIBS) && !empty(ALTLIBS)))
$(BASELIB):$(BASELIBSRCDIR)DESCEND
$(ALTLIBS):$(.TARGET:S/.a/DESCEND/)

#
# By using a .EXEC target the fact that we descend doesn't automatically
# force the libraries logical mod time to change (thus causing things like
# .so libs that depend on the .a to rebuild)
#
$(DESCENDERS)!$(.TARGET:S/DESCEND/SETUPDIR/) .EXEC
	cd $(.TARGET:S/DESCEND//); $(MAKE)
#
# get -n to work a bit - this will cause the tlinks to link even if -n
# is specified
#
.MAKE:$(DESCENDERS) $(SETUPDIRS)

# The base lib needs no setup
$(NOSETUPDIRS)!

# there are only targets at the top level
rmtargets!$(COMMONPREF)$$@

clobber!$(COMMONPREF)$$@
	$(RMSOURCES)
	$(SUBDIRS_MAKERULE)

clean!$(COMMONPREF)$$@
	$(SUBDIRS_MAKERULE)

#
# handy rule to simply rebuild .a's that have .so's
#
dsos! $(LIBS:N?*ns.a:.a=.so)

#endif

#if defined(ALTLIBS) && !empty(ALTLIBS)
#
# We really want to tlink every time just to be sure, by using a .EXEC
# target we don't get penalized for this
#

$(SETUPDIRS)!.EXEC
	$(LINKSOURCES) $(BASELIBSRCDIR) $(.TARGET:S/SETUPDIR//)
	rm -f $(.TARGET:S/SETUPDIR//)/versiondefs
	ln -sf ../$(.TARGET:S/SETUPDIR/versiondefs/) $(.TARGET:S/SETUPDIR//)/versiondefs
	$(SUBDIRS_LINKRULE)

#endif

include ${COMMONRULES}

# add dependency on export files - this isn't quite correct since
# it means that ALL .a's and all so's depend on every export file ..
$(TARGETS):$(DSOEXPORTS) \
		$(DSOEXPORTS_32) \
		$(DSOEXPORTS_32_ABI) \
		$(DSOEXPORTS_N32) \
		$(DSOEXPORTS_64) \
		$(DSOEXPORTS_64_ABI)

#
# Inference rule for creating a share object from a library.
#
.SUFFIXES: .a .so 

#
# The real messy rule at the end is a backward compat rule
# Note that when building .so versions of ABI libs, we don't link
# against any other libraries - this is mainly because we can't
# link against libc.so (the abi version).
# At some point it might be necessary to permit linking against
# some DSO's while not linking against libc ...
#
.a.so:
	$(LD) \
	$(.IMPSRC:M?*_32.a:S/$(.IMPSRC)/$(LDOPTS_32) $(LDDSOOPTS_32)/) \
	$(.IMPSRC:M?*_32_M2.a:S/$(.IMPSRC)/$(LDOPTS_32_M2) $(LDDSOOPTS_32)/) \
	$(.IMPSRC:M?*_32_abi.a:S/$(.IMPSRC)/$(LDOPTS_32_ABI) $(LDDSOOPTS_32_ABI)/) \
	$(.IMPSRC:M?*_r32.a:S/$(.IMPSRC)/$(LDOPTS_R32) $(LDDSOOPTS_R32)/) \
	$(.IMPSRC:M?*_n32.a:S/$(.IMPSRC)/$(LDOPTS_N32) $(LDDSOOPTS_N32)/) \
	$(.IMPSRC:M?*_n32_M3.a:S/$(.IMPSRC)/$(LDOPTS_N32_M3) $(LDDSOOPTS_N32)/)\
	$(.IMPSRC:M?*_n32_M4.a:S/$(.IMPSRC)/$(LDOPTS_N32_M4) $(LDDSOOPTS_N32)/)\
	$(.IMPSRC:M?*_64.a:S/$(.IMPSRC)/$(LDOPTS_64) $(LDDSOOPTS_64)/) \
	$(.IMPSRC:M?*_64_M3.a:S/$(.IMPSRC)/$(LDOPTS_64_M3) $(LDDSOOPTS_64)/) \
	$(.IMPSRC:M?*_64_M4.a:S/$(.IMPSRC)/$(LDOPTS_64_M4) $(LDDSOOPTS_64)/) \
	$(.IMPSRC:M?*_64_abi.a:S/$(.IMPSRC)/$(LDOPTS_64_ABI) $(LDDSOOPTS_64_ABI)/) \
	$(.IMPSRC:M?*.a:N?*_64?*:N?*_32?*:N?*_n32?*:N?*_abi?*:N?*_r32?*:S/$(.IMPSRC)/$(LDOPTS_32) $(LDDSOOPTS_32)/) \
	$(.IMPSRC) \
	$(.IMPSRC:N?*_abi.a:S/$(.IMPSRC)/$(LDLIBS)/) \
	-o $(.TARGET)

#
# If we're a single level single version library,
# include libleaf{defs,rules}
#
#if !(defined(MULTIDIR) || (defined(ALTLIBS) && !empty(ALTLIBS)))
INCLUDEDATROOT=yes
include $(LIBLEAFRULES)
#endif