#
# Startversion target - generate version number (and alpha number) in a 
#			standard fashion

# Input 
#	- TOOLROOT macro is set to point to tools to use for this build.
#	- mkversionnum and showversionnum available in $(TOOLROOT). These 
#		are part of the buildtools ism
#	- include $(IVDEPTH)/make/releasedefs at the same level you 
#		include this file. This provides the definition of the 
#		TREE_ID and RELEASE_NUM macros
#	- The WORKAREA environment variable pointing to a writable directory.
#		Typically, this is a ptools workarea containing one or more 
#		ISMs. The version number generated applies to all of these
#		ISMs.
#	- set the following macros as needed
#	BUILDER - (to 1 if project build, to 2 if build group build) 
#		defaults to 0 (developer build).
#	TREE_ID - to an integer 1-9 to distinguish parallel OS efforts
#		  targeted to new hardware.
#		  It will default to the value of TREE_ID found in 
#		  $(IVDEPTH)/make/releasedefs.
#	PATCH_RELEASE - if creating a patch release (will default to first eight
#		  digits of $(WORKAREA)/.version_number)
#	PATCH_NUM - patch number (sequences patch releases)
#	VNUM_OVERRIDE - a ten digit version number to be directly used.
#		This option is provided as a hook and should rarely if ever be
#		used.

# Output 
#	- $(WORKAREA)/.version_number - the ten digit version number
#	- $(WORKAREA)/.alpha_number - the alpha number portion of the 
#		version number

# Algorithm
#
#	If PATCH_NUM is set then a patch release version number is generated.
#	Else if VNUM_OVERRIDE is set then it will be used as the version number.
#	Else a regular version number is generated.
#
#	Patch version number
#
#		first eight digit are PATCH_RELEASE if it is set.
#		Else first eight digits of $(WORKAREA)/.version_number.
#		It is and error for both PATCH_RELEASE and 
#		$(WORKAREA)/.version_number to be unset.
#
#		last two digits are 30 + (PATCH_NUM mod 70).
#		first eight digits generated above are (potentially)
#		modified by adding PATCH_NUM/70 (this should rarely happen).
#
#	Regular version number
#
#		first three digits are RELEASE_NUM.
#
#		next five digits are the number of hours since 
#		January 1, 1993 and are generated by the mkversionnum 
#		command.
#
#		next digit is BUILDER.
#
#		last digit is TREE_ID.
#
#	Alpha number 
#		is the fourth thru eighth digits from the version number 
#		generated by the above steps. These five digits are the alpha
#		number portion of the version number and are the number of 
#		hours since Jan 1, 1993.
#		

#ident "$Revision: 1.1.1.1 $"

VNUM=$(WORKAREA)/.version_number
ANUM=$(WORKAREA)/.alpha_number
MKVERSIONNUM=$(TOOLROOT)/usr/sbin/mkversionnum
SHOWVERSIONNUM=$(TOOLROOT)/usr/sbin/showversionnum

#	The file where the .o file with the ident string lives.
#	Build this into all files, by building with RLS_ID_OBJECT=${V_IDENTFILE}
#	in the environment.  The cc driver automatically passes this to ld
##	if set, as the last item on the ld line.  No problem for standalone
#	because all standalone (coff) programs use ld rather than the driver.
#	variable constructed so the 3.18 (late alpha) ld recognizes the file
#	as "PIC-neutral", so it can be used with shared and -non_shared 
#	binaries. Written so both ident and what show a meaningful string on 
#	all resulting binaries.
#	This one definitely uses the TOOLROOT compiler; do not use $(CCF)
#	because this may be included in Makefiles that do not define it.
V_IDENTFILE=${WORKAREA}/.identfile.o
V_IDENTFILE_64=${WORKAREA}/.ident_64.o
V_IDENTFILE_N32=${WORKAREA}/.ident_n32.o

# want this for the basic system release number for V_IDENTFILE
sinclude $(IVDEPTH)/make/releasedefs

startversion:
	@if [ "$(WORKAREA)" = "" ]; then \
		echo "You must set the WORKAREA environment variable"; \
		exit 1; \
	fi
	@if [ "$(PATCH_NUM)" ]; then \
		if [ "$(PATCH_RELEASE)" ]; then \
			newvnum=`$(MKVERSIONNUM) -P "$(PATCH_RELEASE)" \
				-p "$(PATCH_NUM)"` ; \
		else \
			patrel=`cat $(VNUM)`; \
			newvnum=`$(MKVERSIONNUM) -P "$$patrel" -p "$(PATCH_NUM)"`;\
		fi; \
	else \
		newvnum=`$(MKVERSIONNUM) -r "$(RELEASE_NUM)" -b "$(BUILDER)" \
			-t "$(TREE_ID)" -f "$(VNUM_OVERRIDE)"` ; \
	fi; \
	echo "$$newvnum" > $(VNUM); \
	echo "$$newvnum" | sed -e "s/...\(.....\)../\1/" > $(ANUM); \
	$(SHOWVERSIONNUM) $$newvnum
	#
	#
	@rm -f ${V_IDENTFILE}*
	@echo 'const char __Release_ID[] = "@(#)\$$'Header: IRIX ${RELEASE}:`cat ${VNUM}` built `date +%D` at `hostname`:$$ROOT $$'";' > ${V_IDENTFILE}.c
	@${TOOLROOT}/usr/bin/cc -mips1 -c ${V_IDENTFILE}.c -o ${V_IDENTFILE}
	@echo Revision information that will go into all binaries is:
	@ident ${V_IDENTFILE} 2>&1 | sed '/:$$/d'
	@if [ "$$RLS_ID_OBJECT" != ${V_IDENTFILE} ]; then \
		echo Warning: You do not have \$$RLS_ID_OBJECT set to ${V_IDENTFILE} in your environment ;\
		echo If you do not do so, you will not get the o32bit ident string in the build;\
	fi
	#
	#
	@rm -f ${V_IDENTFILE_64}*
	@echo 'const char __Release_ID[] = "@(#)$$'Header: IRIX ${RELEASE}:`cat ${VNUM}` built `date +%D` at `hostname`:$$ROOT $$'";' > ${V_IDENTFILE_64}.c
	@echo 'static const char *p = __Release_ID;' >> ${V_IDENTFILE_64}.c
	@${TOOLROOT}/usr/bin/cc -64 -mips3 -cckr -c ${V_IDENTFILE_64}.c -o ${V_IDENTFILE_64}
	@if [ "$$RLS_ID_OBJECT64" != ${V_IDENTFILE_64} ]; then \
		echo Warning: You do not have \$$RLS_ID_OBJECT64 set to ${V_IDENTFILE_64} in your environment ;\
		echo If you do not do so, you will not get the 64bit ident string in the build;\
	fi
	#
	#
	@rm -f ${V_IDENTFILE_N32}*
	@echo 'const char __Release_ID[] = "@(#)$$'Header: IRIX ${RELEASE}:`cat ${VNUM}` built `date +%D` at `hostname`:$$ROOT $$'";' > ${V_IDENTFILE_N32}.c
	@echo 'static const char *p = __Release_ID;' >> ${V_IDENTFILE_N32}.c
	@${TOOLROOT}/usr/bin/cc -n32 -mips3 -cckr -c ${V_IDENTFILE_N32}.c -o ${V_IDENTFILE_N32}
	@if [ "$$RLS_ID_OBJECTN32" != ${V_IDENTFILE_N32} ]; then \
		echo Warning: You do not have \$$RLS_ID_OBJECTN32 set to ${V_IDENTFILE_N32} in your environment ;\
		echo If you do not do so, you will not get the n32bit ident string in the build;\
	fi