xref: /freebsd/sys/conf/kern.pre.mk (revision 895f86f15fbf6540071feb9328c3c50ed1f027b8)
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}
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.if make(depend) || make(kernel-depend)
68
69# This hack lets us use the ipfilter code without spamming a new
70# include path into contrib'ed source files.
71INCLUDES+= -I$S/contrib/ipfilter
72
73# ... and the same for ath
74INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
75
76# ... and the same for the NgATM stuff
77INCLUDES+= -I$S/contrib/ngatm
78
79# ... and the same for vchiq
80INCLUDES+= -I$S/contrib/vchiq
81
82# ... and the same for twa
83INCLUDES+= -I$S/dev/twa
84
85# ... and the same for cxgb and cxgbe
86INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
87
88.endif
89
90CFLAGS=	${COPTFLAGS} ${DEBUG}
91CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
92CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
93CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
94.if ${MACHINE_CPUARCH} == "mips"
95CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
96.endif
97CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
98CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
99CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
100.if defined(CFLAGS_ARCH_PARAMS)
101CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
102.endif
103WERROR?= -Werror
104
105# XXX LOCORE means "don't declare C stuff" not "for locore.s".
106ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
107
108.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
109CFLAGS+=	-DGPROF
110CFLAGS.gcc+=	-falign-functions=16
111.if ${PROFLEVEL} >= 2
112CFLAGS+=	-DGPROF4 -DGUPROF
113PROF=		-pg
114.if ${COMPILER_TYPE} == "gcc"
115PROF+=		-mprofiler-epilogue
116.endif
117.else
118PROF=		-pg
119.endif
120.endif
121DEFINED_PROF=	${PROF}
122
123# Put configuration-specific C flags last (except for ${PROF}) so that they
124# can override the others.
125CFLAGS+=	${CONF_CFLAGS}
126
127# Optional linting. This can be overridden in /etc/make.conf.
128LINTFLAGS=	${LINTOBJKERNFLAGS}
129
130NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
131NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
132PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
133NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
134
135NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
136	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
137
138NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
139NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
140	-o ${.TARGET} ${.ALLSRC:M*.fw}
141
142# Common for dtrace / zfs
143CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S -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
144CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
145CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
146
147# Special flags for managing the compat compiles for ZFS
148ZFS_CFLAGS=	-DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs -I$S/cddl/contrib/opensolaris/uts/common/zmod -I$S/cddl/contrib/opensolaris/common/zfs ${CDDL_CFLAGS}
149ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
150ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
151ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
152
153# Special flags for managing the compat compiles for DTrace
154DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
155.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
156DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
157.endif
158DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
159DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
160DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
161DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
162
163# Special flags for managing the compat compiles for DTrace/FBT
164FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$S/cddl/dev/fbt/${MACHINE_CPUARCH} -I$S/cddl/dev/fbt -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S ${CDDL_CFLAGS}
165.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
166FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
167.endif
168FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
169
170.if ${MK_CTF} != "no"
171NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
172.elif ${MAKE_VERSION} >= 5201111300
173NORMAL_CTFCONVERT=
174.else
175NORMAL_CTFCONVERT=	@:
176.endif
177
178NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
179
180# Linux Kernel Programming Interface C-flags
181LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
182LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
183
184# Infiniband C flags.  Correct include paths and omit errors that linux
185# does not honor.
186OFEDINCLUDES=	-I$S/ofed/include ${LINUXKPI_INCLUDES}
187OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
188OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
189OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
190OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
191
192GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
193SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
194SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
195SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
196SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
197SYSTEM_OBJS+= hack.So
198.if ${MFS_IMAGE:Uno} != "no"
199SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
200.endif
201SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} --no-warn-mismatch \
202	--warn-common --export-dynamic --dynamic-linker /red/herring \
203	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
204SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
205	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
206SYSTEM_DEP+= ${LDSCRIPT}
207
208# Calculate path for .m files early, if needed.
209.if !defined(__MPATH)
210__MPATH!=find ${S:tA}/ -name \*_if.m
211.endif
212
213# MKMODULESENV is set here so that port makefiles can augment
214# them.
215
216MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
217MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
218MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
219MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
220.if (${KERN_IDENT} == LINT)
221MKMODULESENV+=	ALL_MODULES=LINT
222.endif
223.if defined(MODULES_OVERRIDE)
224MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
225.endif
226.if defined(DEBUG)
227MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
228.endif
229MKMODULESENV+=	__MPATH="${__MPATH}"
230
231# Architecture and output format arguments for objdump to convert image to
232# object file
233.if ${MFS_IMAGE:Uno} != "no"
234
235.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
236EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
237.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
238.undef EMBEDFS_FORMAT.${MACHINE_ARCH}
239.endif
240.endif
241
242.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
243EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
244.if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
245.undef EMBEDFS_ARCH.${MACHINE_ARCH}
246.endif
247.endif
248
249EMBEDFS_FORMAT.arm?=		elf32-littlearm
250EMBEDFS_FORMAT.armv6?=		elf32-littlearm
251EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
252EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
253EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
254EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
255.endif
256
257# Detect kernel config options that force stack frames to be turned on.
258DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
259DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
260HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
261