Makefile.landisk revision 1.55 
1#	$OpenBSD: Makefile.landisk,v 1.55 2016/09/24 19:13:03 kettenis Exp $
2
3# For instructions on building kernels consult the config(8) and options(4)
4# manual pages.
5#
6# N.B.: NO DEPENDENCIES ON FOLLOWING FLAGS ARE VISIBLE TO MAKEFILE
7#	IF YOU CHANGE THE DEFINITION OF ANY OF THESE RECOMPILE EVERYTHING
8# DEBUG is set to -g by config if debugging is requested (config -g).
9# PROF is set to -pg by config if profiling is requested (config -p).
10
11.include <bsd.own.mk>
12
13SIZE?=	size
14STRIP?=	strip
15
16# source tree is located via $S relative to the compilation directory
17.ifndef S
18S!=	cd ../../../..; pwd
19.endif
20
21_machdir?=	$S/arch/${_mach}
22_archdir?=	$S/arch/${_arch}
23
24INCLUDES=	-nostdinc -I$S -I. -I$S/arch
25CPPFLAGS=	${INCLUDES} ${IDENT} ${PARAM} -D_KERNEL -D__${_mach}__ -MD -MP
26CWARNFLAGS=	-Werror -Wall -Wimplicit-function-declaration \
27		-Wno-main -Wno-uninitialized -Wno-pointer-sign \
28		-Wframe-larger-than=2047
29
30CMACHFLAGS=	-m4-nofpu
31CMACHFLAGS+=	-fno-builtin-printf -fno-builtin-snprintf \
32		-fno-builtin-vsnprintf -fno-builtin-log \
33		-fno-builtin-log2 -fno-builtin-malloc ${NOPIE_FLAGS}
34.if ${IDENT:M-DNO_PROPOLICE}
35CMACHFLAGS+=	-fno-stack-protector
36.endif
37
38COPTS?=		-O2
39CFLAGS=		${DEBUG} ${CWARNFLAGS} ${CMACHFLAGS} ${COPTS} ${PIPE}
40AFLAGS=		-D_LOCORE -x assembler-with-cpp ${CWARNFLAGS} ${CMACHFLAGS}
41LINKFLAGS=	-N -Ttext 0x8c002000 -e start --warn-common -nopie
42
43.if ${IDENT:M-DDDB_STRUCT}
44DB_STRUCTINFO=	db_structinfo.h
45.else
46DB_STRUCTINFO=
47.endif
48
49HOSTCC?=	${CC}
50HOSTED_CPPFLAGS=${CPPFLAGS:S/^-nostdinc$//}
51HOSTED_CFLAGS=	${CFLAGS}
52HOSTED_C=	${HOSTCC} ${HOSTED_CFLAGS} ${HOSTED_CPPFLAGS} -c $<
53
54NORMAL_C_NOP=	${CC} ${CFLAGS} ${CPPFLAGS} -c $<
55NORMAL_C=	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<
56NORMAL_S=	${CC} ${AFLAGS} ${CPPFLAGS} -c $<
57
58%OBJS
59
60%CFILES
61
62%SFILES
63
64# load lines for config "xxx" will be emitted as:
65# xxx: ${SYSTEM_DEP} swapxxx.o
66#	${SYSTEM_LD_HEAD}
67#	${SYSTEM_LD} swapxxx.o
68#	${SYSTEM_LD_TAIL}
69SYSTEM_HEAD=	locore.o param.o ioconf.o
70SYSTEM_OBJ=	${SYSTEM_HEAD} ${OBJS}
71SYSTEM_DEP=	Makefile ${SYSTEM_OBJ}
72SYSTEM_LD_HEAD=	@rm -f $@
73SYSTEM_LD=	@echo ${LD} ${LINKFLAGS} -o $@ '$${SYSTEM_HEAD} vers.o $${OBJS}'; \
74		${LD} ${LINKFLAGS} -o $@ ${SYSTEM_HEAD} vers.o ${OBJS}
75SYSTEM_LD_TAIL=	@${SIZE} $@; chmod 755 $@
76
77DEBUG?=
78.if ${DEBUG} == "-g"
79STRIPFLAGS=	-S
80SYSTEM_LD_TAIL+=; \
81		echo mv $@ $@.gdb; rm -f $@.gdb; mv $@ $@.gdb; \
82		echo ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb; \
83		${STRIP} ${STRIPFLAGS} -o $@ $@.gdb
84.else
85LINKFLAGS+=	-S
86.endif
87
88%LOAD
89
90# cc's -MD puts the source and output paths in the dependency file;
91# since those are temp files here we need to fix it up.  It also
92# puts the file in /tmp, so we use -MF to put it in the current
93# directory as assym.P and then generate assym.d from it with a
94# good target name
95assym.h: $S/kern/genassym.sh Makefile \
96	 ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf
97	cat ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf | \
98	    sh $S/kern/genassym.sh ${CC} ${CFLAGS} ${CPPFLAGS} -MF assym.P > assym.h.tmp
99	sed '1s/.*/assym.h: \\/' assym.P > assym.d
100	sort -u assym.h.tmp > assym.h
101
102param.c: $S/conf/param.c
103	rm -f param.c
104	cp $S/conf/param.c .
105
106param.o: param.c Makefile
107	${NORMAL_C}
108
109mcount.o: $S/lib/libkern/mcount.c Makefile
110	${NORMAL_C_NOP}
111
112ioconf.o: ioconf.c
113	${NORMAL_C}
114
115vers.o: ${SYSTEM_DEP} ${SYSTEM_SWAP_DEP}
116	sh $S/conf/newvers.sh
117	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c vers.c
118
119clean::
120	rm -f eddep *bsd *bsd.gdb tags *.[dio] [a-z]*.s \
121	    [Ee]rrs linterrs assym.h ${DB_STRUCTINFO}
122
123lint:
124	@lint -hbxncez -Dvolatile= ${CPPFLAGS} -UKGDB \
125	    ${CFILES} ioconf.c param.c | \
126	    grep -v 'static function .* unused'
127
128depend:
129	@touch $@
130
131tags:
132	@echo "see $S/kern/Makefile for tags"
133
134db_structinfo.h: $S/ddb/db_structinfo.c $S/ddb/parse_structinfo.pl
135	${CC} ${CFLAGS} ${CPPFLAGS} -MT $@ -gstabs -c $S/ddb/db_structinfo.c
136	objdump -g db_structinfo.o | perl $S/ddb/parse_structinfo.pl > $@
137	rm -f db_structinfo.o
138
139locore.o: ${_machdir}/${_mach}/locore.S assym.h
140locore_subr.o vectors.o in_cksum.o: assym.h
141
142# The install target can be redefined by putting a
143# install-kernel-${MACHINE_NAME} target into /etc/mk.conf
144MACHINE_NAME!=  uname -n
145install: install-kernel-${MACHINE_NAME}
146.if !target(install-kernel-${MACHINE_NAME}})
147install-kernel-${MACHINE_NAME}:
148	cmp -s bsd /bsd || ln -f /bsd /obsd
149	cp bsd /nbsd
150	mv /nbsd /bsd
151.endif
152
153# pull in the dependency information
154.if !empty(DB_STRUCTINFO) && !exists(${DB_STRUCTINFO})
155 ${SYSTEM_OBJ}: ${DB_STRUCTINFO}
156.endif
157.ifnmake clean
158. for o in ${SYSTEM_OBJ} assym.h ${DB_STRUCTINFO}
159.  if exists(${o:R}.d)
160.   include "${o:R}.d"
161.  elif exists($o)
162    .PHONY: $o
163.  endif
164. endfor
165.endif
166
167%RULES
168