Makefile.landisk revision 1.73 
1#	$OpenBSD: Makefile.landisk,v 1.73 2017/08/12 20:26:11 mpi 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?=	ctfstrip
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}
34SORTR=		sort -R
35.if ${IDENT:M-DNO_PROPOLICE}
36CMACHFLAGS+=	-fno-stack-protector
37.endif
38.if ${IDENT:M-DSMALL_KERNEL}
39SORTR=		cat
40.endif
41
42DEBUG?=		-g
43COPTS?=		-O2
44CFLAGS=		${DEBUG} ${CWARNFLAGS} ${CMACHFLAGS} ${COPTS} ${PIPE}
45AFLAGS=		-D_LOCORE -x assembler-with-cpp ${CWARNFLAGS} ${CMACHFLAGS}
46LINKFLAGS=	-N -Ttext 0x8c002000 -e start --warn-common -nopie
47
48.if ${IDENT:M-DDDB_STRUCT}
49DB_STRUCTINFO=	db_structinfo.h
50.else
51DB_STRUCTINFO=
52.endif
53
54HOSTCC?=	${CC}
55HOSTED_CPPFLAGS=${CPPFLAGS:S/^-nostdinc$//}
56HOSTED_CFLAGS=	${CFLAGS}
57HOSTED_C=	${HOSTCC} ${HOSTED_CFLAGS} ${HOSTED_CPPFLAGS} -c $<
58
59NORMAL_C_NOP=	${CC} ${CFLAGS} ${CPPFLAGS} -c $<
60NORMAL_C=	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c $<
61NORMAL_S=	${CC} ${AFLAGS} ${CPPFLAGS} -c $<
62
63%OBJS
64
65%CFILES
66
67%SFILES
68
69# load lines for config "xxx" will be emitted as:
70# xxx: ${SYSTEM_DEP} swapxxx.o
71#	${SYSTEM_LD_HEAD}
72#	${SYSTEM_LD} swapxxx.o
73#	${SYSTEM_LD_TAIL}
74SYSTEM_HEAD=	locore0.o gap.o
75SYSTEM_OBJ=	${SYSTEM_HEAD} ${OBJS} param.o ioconf.o
76SYSTEM_DEP=	Makefile ${SYSTEM_OBJ} ld.script
77SYSTEM_LD_HEAD=	@rm -f $@
78SYSTEM_LD=	@echo ${LD} ${LINKFLAGS} -o $@ '$${SYSTEM_HEAD} vers.o $${OBJS}'; \
79		umask 007; \
80		echo ${OBJS} param.o ioconf.o vers.o | tr " " "\n" | ${SORTR} > lorder; \
81		${LD} ${LINKFLAGS} -o $@ ${SYSTEM_HEAD} `cat lorder`
82SYSTEM_LD_TAIL=	@${SIZE} $@
83
84.if ${DEBUG} == "-g"
85STRIPFLAGS=	-S
86SYSTEM_LD_TAIL+=; umask 007; \
87		echo mv $@ $@.gdb; rm -f $@.gdb; mv $@ $@.gdb; \
88		echo ${STRIP} ${STRIPFLAGS} -o $@ $@.gdb; \
89		${STRIP} ${STRIPFLAGS} -o $@ $@.gdb
90.else
91LINKFLAGS+=	-S
92.endif
93
94%LOAD
95
96# cc's -MD puts the source and output paths in the dependency file;
97# since those are temp files here we need to fix it up.  It also
98# puts the file in /tmp, so we use -MF to put it in the current
99# directory as assym.P and then generate assym.d from it with a
100# good target name
101assym.h: $S/kern/genassym.sh Makefile \
102	 ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf
103	cat ${_archdir}/${_arch}/genassym.cf ${_machdir}/${_mach}/genassym.cf | \
104	    sh $S/kern/genassym.sh ${CC} ${CFLAGS} ${CPPFLAGS} -MF assym.P > assym.h.tmp
105	sed '1s/.*/assym.h: \\/' assym.P > assym.d
106	sort -u assym.h.tmp > assym.h
107
108param.c: $S/conf/param.c
109	rm -f param.c
110	cp $S/conf/param.c .
111
112param.o: param.c Makefile
113	${NORMAL_C}
114
115mcount.o: $S/lib/libkern/mcount.c Makefile
116	${NORMAL_C_NOP}
117
118ioconf.o: ioconf.c
119	${NORMAL_C}
120
121ld.script: ${_machdir}/conf/ld.script
122	cp ${_machdir}/conf/ld.script $@
123
124makegap.sh:
125	cp $S/conf/makegap.sh $@
126
127MAKE_GAP = LD="${LD}" sh makegap.sh 0xc3c3c3c3
128
129gap.o:	Makefile makegap.sh vers.o
130	${MAKE_GAP}
131
132vers.o: ${SYSTEM_DEP:Ngap.o}
133	sh $S/conf/newvers.sh
134	${CC} ${CFLAGS} ${CPPFLAGS} ${PROF} -c vers.c
135
136clean:
137	rm -f *bsd *bsd.gdb *.[dio] [a-z]*.s assym.* ${DB_STRUCTINFO} \
138	    gap.link ld.script lorder makegap.sh param.c
139
140cleandir: clean
141	rm -f Makefile *.h ioconf.c options machine ${_mach} vers.c
142
143depend obj:
144
145db_structinfo.h: $S/ddb/db_structinfo.c $S/ddb/parse_structinfo.pl
146	${CC} ${CFLAGS} ${CPPFLAGS} -MT $@ -gstabs -c $S/ddb/db_structinfo.c
147	objdump -g db_structinfo.o | perl $S/ddb/parse_structinfo.pl > $@
148	rm -f db_structinfo.o
149
150locore.o: ${_machdir}/${_mach}/locore.S assym.h
151locore0.o: ${_machdir}/${_mach}/locore0.S assym.h
152locore_subr.o vectors.o in_cksum.o: assym.h
153
154newinstall:
155	cmp -s bsd /bsd || ln -f /bsd /obsd
156	umask 077 && cp bsd /nbsd && mv /nbsd /bsd && \
157	    sha256 -h /var/db/kernel.SHA256 /bsd
158
159install: update-link newinstall
160
161# pull in the dependency information
162.if !empty(DB_STRUCTINFO) && !exists(${DB_STRUCTINFO})
163 ${SYSTEM_OBJ}: ${DB_STRUCTINFO}
164.endif
165.ifnmake clean
166. for o in ${SYSTEM_OBJ:Ngap.o} assym.h ${DB_STRUCTINFO}
167.  if exists(${o:R}.d)
168.   include "${o:R}.d"
169.  elif exists($o)
170    .PHONY: $o
171.  endif
172. endfor
173.endif
174
175%RULES
176