bsd.obj.mk revision 95254 
1# $FreeBSD: head/share/mk/bsd.obj.mk 95254 2002-04-22 09:12:18Z ru $
2#
3# The include file <bsd.obj.mk> handles creating the 'obj' directory
4# and cleaning up object files, etc.
5#
6# Under construction: it also contains the _SUBDIR target (which is used
7# by most `mk' files to recurse into subdirectories) and defaults for the
8# cleandepend, depend and tags targets.  It may eventually be merged with
9# with bsd.subdir.mk.
10#
11# +++ variables +++
12#
13# CLEANDIRS	Additional directories to remove for the clean target.
14#
15# CLEANFILES	Additional files to remove for the clean target.
16#
17# MAKEOBJDIR 	A pathname for the directory where the targets 
18#		are built.  Note: MAKEOBJDIR is an *enviroment* variable
19#		and works properly only if set as an enviroment variable,
20#		not as a global or command line variable!
21#
22#		E.g. use `env MAKEOBJDIR=temp-obj make'
23#
24# MAKEOBJDIRPREFIX  Specifies somewhere other than /usr/obj to root the object
25#		tree.  Note: MAKEOBJDIRPREFIX is an *enviroment* variable
26#		and works properly only if set as an enviroment variable,
27#		not as a global or command line variable!
28#
29#		E.g. use `env MAKEOBJDIRPREFIX=/somewhere/obj make'
30#
31# NOOBJ		Do not create object directories.  This should not be set
32#		if anything is built.
33#
34# +++ targets +++
35#
36#	clean:
37#		remove ${CLEANFILES}; remove ${CLEANDIRS} and all contents.
38#
39#	cleandir:
40#		remove the build directory (and all its contents) created by obj
41#
42#	obj:
43#		create build directory.
44#
45
46.if !target(__<bsd.obj.mk>__)
47__<bsd.obj.mk>__:
48.include <bsd.own.mk>
49
50.if defined(MAKEOBJDIRPREFIX)
51CANONICALOBJDIR:=${MAKEOBJDIRPREFIX}${.CURDIR}
52.else
53CANONICALOBJDIR:=/usr/obj${.CURDIR}
54.endif
55
56#
57# Warn of unorthodox object directory.
58#
59# The following directories are tried in order for ${.OBJDIR}:
60#
61# 1.  ${MAKEOBJDIRPREFIX}/`pwd`
62# 2.  ${MAKEOBJDIR}
63# 3.  obj.${MACHINE}
64# 4.  obj
65# 5.  /usr/obj/`pwd`
66# 6.  ${.CURDIR}
67#
68# If ${.OBJDIR} is constructed using canonical cases 1 or 5, or
69# case 2 (using MAKEOBJDIR), don't issue a warning.  Otherwise,
70# issue a warning differentiating between cases 6 and (3 or 4).
71#
72objwarn:
73.if !defined(NOOBJ) && ${.OBJDIR} != ${CANONICALOBJDIR} && \
74    !(defined(MAKEOBJDIRPREFIX) && exists(${CANONICALOBJDIR}/)) && \
75    !(defined(MAKEOBJDIR) && exists(${MAKEOBJDIR}/))
76.if ${.OBJDIR} == ${.CURDIR}
77	@${ECHO} "Warning: Object directory not changed from original ${.CURDIR}"
78.elif exists(${.CURDIR}/obj.${MACHINE}/) || exists(${.CURDIR}/obj/)
79	@${ECHO} "Warning: Using ${.OBJDIR} as object directory instead of\
80		canonical ${CANONICALOBJDIR}"
81.endif
82.endif
83
84.if !target(obj)
85.if defined(NOOBJ)
86obj:
87.else
88obj:	_SUBDIR
89	@if ! test -d ${CANONICALOBJDIR}/; then \
90		mkdir -p ${CANONICALOBJDIR}; \
91		if ! test -d ${CANONICALOBJDIR}/; then \
92			${ECHO} "Unable to create ${CANONICALOBJDIR}."; \
93			exit 1; \
94		fi; \
95		${ECHO} "${CANONICALOBJDIR} created for ${.CURDIR}"; \
96	fi
97.endif
98.endif
99
100.if !target(objlink)
101objlink: _SUBDIR
102	@if test -d ${CANONICALOBJDIR}/; then \
103		rm -f ${.CURDIR}/obj; \
104		ln -s ${CANONICALOBJDIR} ${.CURDIR}/obj; \
105	else \
106		echo "No ${CANONICALOBJDIR} to link to - do a make obj."; \
107	fi
108.endif
109
110#
111# where would that obj directory be?
112#
113.if !target(whereobj)
114whereobj:
115	@echo ${.OBJDIR}
116.endif
117
118cleanobj:
119.if ${CANONICALOBJDIR} != ${.CURDIR} && exists(${CANONICALOBJDIR}/)
120	@rm -rf ${CANONICALOBJDIR}
121.else
122	@cd ${.CURDIR} && ${MAKE} clean cleandepend
123.endif
124	@if [ -h ${.CURDIR}/obj ]; then rm -f ${.CURDIR}/obj; fi
125
126.if !target(clean)
127clean: _SUBDIR
128.if defined(CLEANFILES) && !empty(CLEANFILES)
129	rm -f ${CLEANFILES} 
130.endif
131.if defined(CLEANDIRS) && !empty(CLEANDIRS)
132	rm -rf ${CLEANDIRS}
133.endif
134.endif
135
136.if !target(checkdpadd)
137checkdpadd: _SUBDIR
138.if (defined(DPADD) || defined(LDADD))
139checkdpadd:
140.if ${OBJFORMAT} != aout
141	@ldadd=`echo \`for lib in ${DPADD} ; do \
142		echo $$lib | sed 's;^/usr/lib/lib\(.*\)\.a;-l\1;' ; \
143	done \`` ; \
144	ldadd1=`echo ${LDADD}` ; \
145	if [ "$$ldadd" != "$$ldadd1" ] ; then \
146		echo ${.CURDIR} ; \
147		echo "DPADD -> $$ldadd" ; \
148		echo "LDADD -> $$ldadd1" ; \
149	fi
150.else
151	@dpadd=`echo \`ld -Bstatic -f ${LDADD}\`` ; \
152	if [ "$$dpadd" != "${DPADD}" ] ; then \
153		echo ${.CURDIR} ; \
154		echo "LDADD -> $$dpadd" ; \
155		echo "DPADD =  ${DPADD}" ; \
156	fi
157.endif
158.endif
159.endif
160
161cleandir: cleanobj _SUBDIR
162
163.for __target in cleandepend depend tags
164.if !target(${__target})
165${__target}: _SUBDIR
166.endif
167.endfor
168
169_SUBDIR: .USE
170.if defined(SUBDIR) && !empty(SUBDIR)
171	@for entry in ${SUBDIR}; do \
172		if test -d ${.CURDIR}/$${entry}.${MACHINE_ARCH}; then \
173			${ECHODIR} "===> ${DIRPRFX}$${entry}.${MACHINE_ARCH}"; \
174			edir=$${entry}.${MACHINE_ARCH}; \
175			cd ${.CURDIR}/$${edir}; \
176		else \
177			${ECHODIR} "===> ${DIRPRFX}$$entry"; \
178			edir=$${entry}; \
179			cd ${.CURDIR}/$${edir}; \
180		fi; \
181		${MAKE} ${.TARGET:realinstall=install} \
182		    DIRPRFX=${DIRPRFX}$$edir/; \
183	done
184.endif
185
186.endif !target(__<bsd.obj.mk>__)
187