Makefile.landisk revision 1.62 
1#	$OpenBSD: Makefile.landisk,v 1.62 2017/06/03 22:21:33 deraadt 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$S -I${.OBJDIR} -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
38DEBUG?=		-g
39COPTS?=		-O2
40CFLAGS=		${DEBUG} ${CWARNFLAGS} ${CMACHFLAGS} ${COPTS} ${PIPE}
41AFLAGS=		-D_LOCORE -x assembler-with-cpp ${CWARNFLAGS} ${CMACHFLAGS}
42LINKFLAGS=	-N -Ttext 0x8c002000 -e start --warn-common -nopie
43
44.if ${IDENT:M-DDDB_STRUCT}
45DB_STRUCTINFO=	db_structinfo.h
46.else
47DB_STRUCTINFO=
48.endif
49
50HOSTCC?=	${CC}
51HOSTED_CPPFLAGS=${CPPFLAGS:S/^-nostdinc$//}
52HOSTED_CFLAGS=	${CFLAGS}
53HOSTED_C=	${HOSTCC} ${HOSTED_CFLAGS} ${HOSTED_CPPFLAGS} -c $<
54
55NORMAL_C_NOP=	${CC} ${CFLAGS} ${CPPFLAGS} -c $<
56NORMAL_C=	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<
57NORMAL_S=	${CC} ${AFLAGS} ${CPPFLAGS} -c $<
58
59%OBJS
60
61%CFILES
62
63%SFILES
64
65# load lines for config "xxx" will be emitted as:
66# xxx: ${SYSTEM_DEP} swapxxx.o
67#	${SYSTEM_LD_HEAD}
68#	${SYSTEM_LD} swapxxx.o
69#	${SYSTEM_LD_TAIL}
70SYSTEM_HEAD=	locore.o param.o ioconf.o
71SYSTEM_OBJ=	${SYSTEM_HEAD} ${OBJS}
72SYSTEM_DEP=	Makefile ${SYSTEM_OBJ}
73SYSTEM_LD_HEAD=	@rm -f $@
74SYSTEM_LD=	@echo ${LD} ${LINKFLAGS} -o $@ '$${SYSTEM_HEAD} vers.o $${OBJS}'; \
75		umask 007; \
76		${LD} ${LINKFLAGS} -o $@ ${SYSTEM_HEAD} vers.o ${OBJS}
77SYSTEM_LD_TAIL=	@${SIZE} $@
78
79.if ${DEBUG} == "-g"
80STRIPFLAGS=	-S
81SYSTEM_LD_TAIL+=; umask 007; \
82		echo mv $@ $@.gdb; rm -f $@.gdb; mv $@ $@.gdb; \
83		echo ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb; \
84		${STRIP} ${STRIPFLAGS} -o $@ $@.gdb
85.else
86LINKFLAGS+=	-S
87.endif
88
89%LOAD
90
91# cc's -MD puts the source and output paths in the dependency file;
92# since those are temp files here we need to fix it up.  It also
93# puts the file in /tmp, so we use -MF to put it in the current
94# directory as assym.P and then generate assym.d from it with a
95# good target name
96assym.h: $S/kern/genassym.sh Makefile \
97	 ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf
98	cat ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf | \
99	    sh $S/kern/genassym.sh ${CC} ${CFLAGS} ${CPPFLAGS} -MF assym.P > assym.h.tmp
100	sed '1s/.*/assym.h: \\/' assym.P > assym.d
101	sort -u assym.h.tmp > assym.h
102
103param.c: $S/conf/param.c
104	rm -f param.c
105	cp $S/conf/param.c .
106
107param.o: param.c Makefile
108	${NORMAL_C}
109
110mcount.o: $S/lib/libkern/mcount.c Makefile
111	${NORMAL_C_NOP}
112
113ioconf.o: ioconf.c
114	${NORMAL_C}
115
116vers.o: ${SYSTEM_DEP} ${SYSTEM_SWAP_DEP}
117	sh $S/conf/newvers.sh
118	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c vers.c
119
120clean:
121	rm -f *bsd *bsd.gdb *.[dio] [a-z]*.s assym.* ${DB_STRUCTINFO} param.c
122
123cleandir: clean
124	rm -f Makefile *.h ioconf.c options machine ${_mach} vers.c
125
126depend obj:
127
128db_structinfo.h: $S/ddb/db_structinfo.c $S/ddb/parse_structinfo.pl
129	${CC} ${CFLAGS} ${CPPFLAGS} -MT $@ -gstabs -c $S/ddb/db_structinfo.c
130	objdump -g db_structinfo.o | perl $S/ddb/parse_structinfo.pl > $@
131	rm -f db_structinfo.o
132
133locore.o: ${_machdir}/${_mach}/locore.S assym.h
134locore_subr.o vectors.o in_cksum.o: assym.h
135
136# The install target can be redefined by putting a
137# install-kernel-${MACHINE_NAME} target into /etc/mk.conf
138MACHINE_NAME!=  uname -n
139install: install-kernel-${MACHINE_NAME}
140.if !target(install-kernel-${MACHINE_NAME}})
141install-kernel-${MACHINE_NAME}:
142	cmp -s bsd /bsd || ln -f /bsd /obsd
143	cp -p bsd /nbsd
144	mv /nbsd /bsd
145.endif
146
147# pull in the dependency information
148.if !empty(DB_STRUCTINFO) && !exists(${DB_STRUCTINFO})
149 ${SYSTEM_OBJ}: ${DB_STRUCTINFO}
150.endif
151.ifnmake clean
152. for o in ${SYSTEM_OBJ} assym.h ${DB_STRUCTINFO}
153.  if exists(${o:R}.d)
154.   include "${o:R}.d"
155.  elif exists($o)
156    .PHONY: $o
157.  endif
158. endfor
159.endif
160
161%RULES
162