xref: /freebsd/sys/conf/kern.pre.mk (revision 71099ec5097cff9b4a566e5474b7f214bd539e8a)
1# $FreeBSD$
2
3# Part of a unified Makefile for building kernels.  This part contains all
4# of the definitions that need to be before %BEFORE_DEPEND.
5
6.include <bsd.own.mk>
7.include <bsd.compiler.mk>
8
9# backwards compat option for older systems.
10MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/}
11
12# Can be overridden by makeoptions or /etc/make.conf
13KERNEL_KO?=	kernel
14KERNEL?=	kernel
15KODIR?=		/boot/${KERNEL}
16LDSCRIPT_NAME?=	ldscript.$M
17LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
18
19M=		${MACHINE_CPUARCH}
20
21AWK?=		awk
22CP?=		cp
23LINT?=		lint
24NM?=		nm
25OBJCOPY?=	objcopy
26SIZE?=		size
27
28.if defined(DEBUG)
29_MINUS_O=	-O
30CTFFLAGS+=	-g
31.else
32.if ${MACHINE_CPUARCH} == "powerpc"
33_MINUS_O=	-O	# gcc miscompiles some code at -O2
34.else
35_MINUS_O=	-O2
36.endif
37.endif
38.if ${MACHINE_CPUARCH} == "amd64"
39.if ${COMPILER_TYPE} != "clang"
40COPTFLAGS?=-O2 -frename-registers -pipe
41.else
42COPTFLAGS?=-O2 -pipe
43.endif
44.else
45COPTFLAGS?=${_MINUS_O} -pipe
46.endif
47.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
48COPTFLAGS+= -fno-strict-aliasing
49.endif
50.if !defined(NO_CPU_COPTFLAGS)
51COPTFLAGS+= ${_CPUCFLAGS}
52.endif
53C_DIALECT= -std=c99
54NOSTDINC= -nostdinc
55
56INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
57
58# This hack lets us use the OpenBSD altq code without spamming a new
59# include path into contrib'ed source files.
60INCLUDES+= -I$S/contrib/altq
61
62.if make(depend) || make(kernel-depend)
63
64# ... and the same for ipfilter
65INCLUDES+= -I$S/contrib/ipfilter
66
67# ... and the same for ath
68INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
69
70# ... and the same for the NgATM stuff
71INCLUDES+= -I$S/contrib/ngatm
72
73# ... and the same for twa
74INCLUDES+= -I$S/dev/twa
75
76# ... and the same for cxgb and cxgbe
77INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
78
79.endif
80
81CFLAGS=	${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
82CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
83CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
84CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
85.if ${MACHINE_CPUARCH} == "mips"
86CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
87.endif
88.if ${COMPILER_TYPE} != "clang"
89CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
90CFLAGS+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
91CFLAGS+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
92.if defined(CFLAGS_ARCH_PARAMS)
93CFLAGS+=${CFLAGS_ARCH_PARAMS}
94.endif
95.endif
96WERROR?= -Werror
97
98# XXX LOCORE means "don't declare C stuff" not "for locore.s".
99ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
100
101.if ${COMPILER_TYPE} == "clang"
102CLANG_NO_IAS= -no-integrated-as
103.else
104GCC_MS_EXTENSIONS= -fms-extensions
105.endif
106
107.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
108CFLAGS+=	-DGPROF
109.if ${COMPILER_TYPE} != "clang"
110CFLAGS+=	-falign-functions=16
111.endif
112.if ${PROFLEVEL} >= 2
113CFLAGS+=	-DGPROF4 -DGUPROF
114PROF=		-pg
115.if ${COMPILER_TYPE} != "clang"
116PROF+=		-mprofiler-epilogue
117.endif
118.else
119PROF=		-pg
120.endif
121.endif
122DEFINED_PROF=	${PROF}
123
124# Put configuration-specific C flags last (except for ${PROF}) so that they
125# can override the others.
126CFLAGS+=	${CONF_CFLAGS}
127
128# Optional linting. This can be overridden in /etc/make.conf.
129LINTFLAGS=	${LINTOBJKERNFLAGS}
130
131NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
132NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
133PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
134NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
135
136NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
137	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
138
139NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
140NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
141	-o ${.TARGET} ${.ALLSRC:M*.fw}
142
143# Special flags for managing the compat compiles for ZFS
144ZFS_CFLAGS=	-DFREEBSD_NAMECACHE -DBUILDING_ZFS -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs -I$S/cddl/contrib/opensolaris/uts/common/zmod -I$S/cddl/contrib/opensolaris/uts/common -I$S -I$S/cddl/contrib/opensolaris/common/zfs -I$S/cddl/contrib/opensolaris/common ${CFLAGS} -Wno-unknown-pragmas -Wno-missing-prototypes -Wno-undef -Wno-strict-prototypes -Wno-cast-qual -Wno-parentheses -Wno-redundant-decls -Wno-missing-braces -Wno-uninitialized -Wno-unused -Wno-inline -Wno-switch -Wno-pointer-arith -Wno-unknown-pragmas
145ZFS_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
146ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
147ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
148ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
149
150.if ${MK_CTF} != "no"
151NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
152.elif ${MAKE_VERSION} >= 5201111300
153NORMAL_CTFCONVERT=
154.else
155NORMAL_CTFCONVERT=	@:
156.endif
157
158NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
159
160# Infiniband C flags.  Correct include paths and omit errors that linux
161# does not honor.
162OFEDINCLUDES=	-I$S/ofed/include/
163OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith ${GCC_MS_EXTENSIONS}
164OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
165OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
166OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
167
168GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
169SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
170SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
171SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
172SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
173SYSTEM_OBJS+= hack.So
174SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${LDFLAGS} --no-warn-mismatch \
175	-warn-common -export-dynamic -dynamic-linker /red/herring \
176	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
177SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
178	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
179SYSTEM_DEP+= ${LDSCRIPT}
180
181# MKMODULESENV is set here so that port makefiles can augment
182# them.
183
184MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
185MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
186MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
187.if (${KERN_IDENT} == LINT)
188MKMODULESENV+=	ALL_MODULES=LINT
189.endif
190.if defined(MODULES_OVERRIDE)
191MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
192.endif
193.if defined(WITHOUT_MODULES)
194MKMODULESENV+=	WITHOUT_MODULES="${WITHOUT_MODULES}"
195.endif
196.if defined(DEBUG)
197MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
198.endif
199
200# Detect kernel config options that force stack frames to be turned on.
201DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
202DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
203HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
204