FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.pre.mk
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 SRCCONF?= /etc/src.conf
7 .if exists(${SRCCONF})
8 .include "${SRCCONF}"
9 .endif
10
11 # Can be overridden by makeoptions or /etc/make.conf
12 KERNEL_KO?= kernel
13 KERNEL?= kernel
14 KODIR?= /boot/${KERNEL}
15
16 M= ${MACHINE_ARCH}
17
18 AWK?= awk
19 LINT?= lint
20 NM?= nm
21 OBJCOPY?= objcopy
22 SIZE?= size
23
24 .if ${CC} == "icc"
25 COPTFLAGS?= -O
26 .else
27 . if defined(DEBUG)
28 _MINUS_O= -O
29 . else
30 _MINUS_O= -O2
31 . endif
32 . if ${MACHINE_ARCH} == "amd64"
33 COPTFLAGS?=-O2 -frename-registers -pipe
34 . else
35 COPTFLAGS?=${_MINUS_O} -pipe
36 . endif
37 . if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
38 COPTFLAGS+= -fno-strict-aliasing
39 . endif
40 .endif
41 .if !defined(NO_CPU_COPTFLAGS)
42 . if ${CC} == "icc"
43 COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
44 . else
45 COPTFLAGS+= ${_CPUCFLAGS}
46 . endif
47 .endif
48 .if ${CC} == "icc"
49 C_DIALECT=
50 NOSTDINC= -X
51 .else
52 C_DIALECT= -std=c99
53 NOSTDINC= -nostdinc
54 .endif
55
56 INCLUDES= ${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.
60 INCLUDES+= -I$S/contrib/altq
61
62 .if make(depend) || make(kernel-depend)
63
64 # ... and the same for ipfilter
65 INCLUDES+= -I$S/contrib/ipfilter
66
67 # ... and the same for pf
68 INCLUDES+= -I$S/contrib/pf
69
70 # ... and the same for Atheros HAL
71 INCLUDES+= -I$S/dev/ath
72
73 # ... and the same for the NgATM stuff
74 INCLUDES+= -I$S/contrib/ngatm
75
76 # .. and the same for twa
77 INCLUDES+= -I$S/dev/twa
78
79 # ... and XFS
80 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
81
82 # ... and OpenSolaris
83 INCLUDES+= -I$S/contrib/opensolaris/compat
84
85 .endif
86
87 CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
88 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
89 .if ${CC} != "icc"
90 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
91 CFLAGS+= --param inline-unit-growth=100
92 CFLAGS+= --param large-function-growth=1000
93 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE} == "i386" || \
94 ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "powerpc" || \
95 ${MACHINE_ARCH} == "sparc64"
96 WERROR?= -Werror
97 .endif
98 .endif
99
100 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
101 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
102
103 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
104 .if ${CC} == "icc"
105 .error "Profiling doesn't work with icc yet"
106 .endif
107 CFLAGS+= -DGPROF -falign-functions=16
108 .if ${PROFLEVEL} >= 2
109 CFLAGS+= -DGPROF4 -DGUPROF
110 PROF= -pg -mprofiler-epilogue
111 .else
112 PROF= -pg
113 .endif
114 .endif
115 DEFINED_PROF= ${PROF}
116
117 # Put configuration-specific C flags last (except for ${PROF}) so that they
118 # can override the others.
119 CFLAGS+= ${CONF_CFLAGS}
120
121 # Optional linting. This can be overridden in /etc/make.conf.
122 LINTFLAGS= ${LINTOBJKERNFLAGS}
123
124 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
125 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
126 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
127 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
128
129 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
130 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
131
132 .if defined(CTFCONVERT)
133 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
134 .else
135 NORMAL_CTFCONVERT=
136 .endif
137
138 NORMAL_LINT= ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
139
140 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
141 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
142 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
143 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
144 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
145 SYSTEM_OBJS+= hack.So
146 .if defined(CTFMERGE)
147 SYSTEM_CTFMERGE= ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
148 LD+= -g
149 .endif
150 SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
151 -warn-common -export-dynamic -dynamic-linker /red/herring \
152 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
153 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
154 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
155 SYSTEM_DEP+= $S/conf/ldscript.$M
156
157 # MKMODULESENV is set here so that port makefiles can augment
158 # them.
159
160 MKMODULESENV= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
161 .if (${KERN_IDENT} == LINT)
162 MKMODULESENV+= ALL_MODULES=LINT
163 .endif
164 .if defined(MODULES_OVERRIDE)
165 MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}"
166 .endif
167 .if defined(DEBUG)
168 MKMODULESENV+= DEBUG_FLAGS="${DEBUG}"
169 .endif
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