xref: /freebsd/sys/conf/kern.pre.mk (revision 4ce386ff25d77954b8cfa11534f632172e848244)
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# Allow user to configure things that only effect src tree builds.
7# Note: This is duplicated from src.sys.mk to ensure that we include
8# /etc/src.conf when building the kernel. Kernels can be built without
9# the rest of /usr/src, but they still always process SRCCONF even though
10# the normal mechanisms to prevent that (compiling out of tree) won't
11# work. To ensure they do work, we have to duplicate thee few lines here.
12SRCCONF?=	/etc/src.conf
13.if (exists(${SRCCONF}) || ${SRCCONF} != "/etc/src.conf") && !target(_srcconf_included_)
14.include "${SRCCONF}"
15_srcconf_included_:
16.endif
17
18.include <bsd.own.mk>
19.include <bsd.compiler.mk>
20.include "kern.opts.mk"
21
22# Can be overridden by makeoptions or /etc/make.conf
23KERNEL_KO?=	kernel
24KERNEL?=	kernel
25KODIR?=		/boot/${KERNEL}
26LDSCRIPT_NAME?=	ldscript.$M
27LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
28
29M=		${MACHINE_CPUARCH}
30
31AWK?=		awk
32CP?=		cp
33LINT?=		lint
34NM?=		nm
35OBJCOPY?=	objcopy
36SIZE?=		size
37
38.if defined(DEBUG)
39_MINUS_O=	-O
40CTFFLAGS+=	-g
41.else
42.if ${MACHINE_CPUARCH} == "powerpc"
43_MINUS_O=	-O	# gcc miscompiles some code at -O2
44.else
45_MINUS_O=	-O2
46.endif
47.endif
48.if ${MACHINE_CPUARCH} == "amd64"
49.if ${COMPILER_TYPE} == "clang"
50COPTFLAGS?=-O2 -pipe
51.else
52COPTFLAGS?=-O2 -frename-registers -pipe
53.endif
54.else
55COPTFLAGS?=${_MINUS_O} -pipe
56.endif
57.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
58COPTFLAGS+= -fno-strict-aliasing
59.endif
60.if !defined(NO_CPU_COPTFLAGS)
61COPTFLAGS+= ${_CPUCFLAGS}
62.endif
63NOSTDINC= -nostdinc
64
65INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
66
67# This hack lets us use the OpenBSD altq code without spamming a new
68# include path into contrib'ed source files.
69INCLUDES+= -I$S/contrib/altq
70
71.if make(depend) || make(kernel-depend)
72
73# ... and the same for ipfilter
74INCLUDES+= -I$S/contrib/ipfilter
75
76# ... and the same for ath
77INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
78
79# ... and the same for the NgATM stuff
80INCLUDES+= -I$S/contrib/ngatm
81
82# ... and the same for vchiq
83INCLUDES+= -I$S/contrib/vchiq
84
85# ... and the same for twa
86INCLUDES+= -I$S/dev/twa
87
88# ... and the same for cxgb and cxgbe
89INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
90
91.endif
92
93CFLAGS=	${COPTFLAGS} ${DEBUG} ${CWARNFLAGS}
94CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
95CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
96CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
97.if ${MACHINE_CPUARCH} == "mips"
98CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
99.endif
100CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
101CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
102CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
103.if defined(CFLAGS_ARCH_PARAMS)
104CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
105.endif
106WERROR?= -Werror
107
108# XXX LOCORE means "don't declare C stuff" not "for locore.s".
109ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
110
111.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
112CFLAGS+=	-DGPROF
113CFLAGS.gcc+=	-falign-functions=16
114.if ${PROFLEVEL} >= 2
115CFLAGS+=	-DGPROF4 -DGUPROF
116PROF=		-pg
117.if ${COMPILER_TYPE} == "gcc"
118PROF+=		-mprofiler-epilogue
119.endif
120.else
121PROF=		-pg
122.endif
123.endif
124DEFINED_PROF=	${PROF}
125
126# Put configuration-specific C flags last (except for ${PROF}) so that they
127# can override the others.
128CFLAGS+=	${CONF_CFLAGS}
129
130# Optional linting. This can be overridden in /etc/make.conf.
131LINTFLAGS=	${LINTOBJKERNFLAGS}
132
133NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
134NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
135PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
136NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
137
138NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
139	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
140
141NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
142NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
143	-o ${.TARGET} ${.ALLSRC:M*.fw}
144
145# Special flags for managing the compat compiles for ZFS
146ZFS_CFLAGS=	-DFREEBSD_NAMECACHE -DBUILDING_ZFS -nostdinc -I$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
147ZFS_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
148ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
149ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
150ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
151
152.if ${MK_CTF} != "no"
153NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
154.elif ${MAKE_VERSION} >= 5201111300
155NORMAL_CTFCONVERT=
156.else
157NORMAL_CTFCONVERT=	@:
158.endif
159
160NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
161
162# Infiniband C flags.  Correct include paths and omit errors that linux
163# does not honor.
164OFEDINCLUDES=	-I$S/ofed/include/
165OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
166OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
167OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
168OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
169
170GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
171SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
172SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
173SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
174SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
175SYSTEM_OBJS+= hack.So
176SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} --no-warn-mismatch \
177	--warn-common --export-dynamic --dynamic-linker /red/herring \
178	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
179SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
180	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
181SYSTEM_DEP+= ${LDSCRIPT}
182
183# MKMODULESENV is set here so that port makefiles can augment
184# them.
185
186MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
187MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
188MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
189MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
190.if (${KERN_IDENT} == LINT)
191MKMODULESENV+=	ALL_MODULES=LINT
192.endif
193.if defined(MODULES_OVERRIDE)
194MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
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