2e432330b6d445eddaec500572cecfee8b5407ec
[dragonfly.git] / sys / conf / kern.pre.mk
1 #
2 # This Makefile covers the top part of the MI kernel build instructions
3 #
4
5 # Can be overridden by makeoptions or /etc/make.conf
6 KERNEL?=        kernel
7
8 # build this target if none is specified on the command line
9 .MAIN:  all
10
11 # Set the platform and machine architectures
12 #
13 P=      ${MACHINE_PLATFORM}
14 M=      ${MACHINE_ARCH}
15
16 SIZE?=          size
17 OBJCOPY?=       objcopy
18
19 COPTFLAGS?=-O2 -pipe
20 #COPTFLAGS?=-O -pipe -flto -fno-fat-lto-objects
21 #COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe
22 #COPTFLAGS?=-O -fcrossjumping -pipe
23 #COPTFLAGS?=-Os -fno-strict-aliasing -pipe
24 #COPTFLAGS?=-O2 -fno-strict-aliasing -pipe
25 .if !defined(NO_CPU_COPTFLAGS)
26 COPTFLAGS+= ${_CPUCFLAGS}
27 .endif
28 # don't use -I- so we can use proper source-relative locality for local
29 # includes.
30 #
31 # -I.  - this is to access the opt_*.h and use_*.h header files generated
32 #        in the kernel build directory.
33 #
34 # -Iinclude
35 #       - this is used to access forwarding header files for
36 #         <machine/*.h> that exist in the cpu architecture but do not
37 #         exist in the platform (machine/) architecture.  This allows
38 #         the platform to trivially override the cpu header files.
39 #
40 INCLUDES= -nostdinc -I. -Iinclude -I$S
41 # This hack is to allow kernel compiles to succeed on machines w/out srcdist
42 .if exists($S/../include)
43 INCLUDES+= -I$S/../include
44 .else
45 INCLUDES+= -I/usr/include
46 .endif
47
48 # For <openssl/headerfile>
49 #
50 INCLUDES+= -I$S/../crypto/libressl/include
51
52 # This hack lets us use the Intel ACPICA code without spamming a new
53 # include path into 100+ source files.
54 .include "$S/conf/acpi.mk"
55 INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include"
56
57 # ... and the same for Atheros HAL
58 INCLUDES+= -I$S/dev/netif/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
59
60 # Same thing for drm includes
61 INCLUDES+= -I$S/dev/drm/include
62
63 COPTS=  ${INCLUDES} ${IDENT} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
64 CFLAGS= ${COPTFLAGS} ${KCFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
65
66 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
67 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS:N-flto}
68
69 DEFINED_PROF=   ${PROF}
70 .if defined(PROF)
71 CFLAGS+=        -falign-functions=16
72 .if ${PROFLEVEL} >= 2
73 IDENT+= -DGPROF4 -DGUPROF
74 .endif
75 .endif
76
77 # Put configuration-specific C flags last (except for ${PROF}) so that they
78 # can override the others.
79 CFLAGS+=        ${CONF_CFLAGS}
80
81 NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
82 NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
83 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
84 PROFILE_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
85
86 NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
87         ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
88
89 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
90 NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw}
91
92 .if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc50")
93 WERROR=-Werror
94 .endif
95
96 GEN_CFILES= $S/platform/$P/$M/genassym.c
97 SYSTEM_CFILES= ioconf.c config.c
98 SYSTEM_SFILES= $S/platform/$P/$M/locore.s
99 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
100 SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
101 SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \
102         -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \
103         -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \
104         -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o
105
106 # In case of LTO provide all standard CFLAGS!
107 .if ${CFLAGS:M-flto}
108 SYSTEM_LD+= ${CFLAGS}
109 ## This one eats a lot of ram, may be needed to correctly link the kernel.
110 ## Default "balanced" might create kernel that "Fatal trap 12" on boot!!!
111 #. if !${CFLAGS:M-flto-partition=*}
112 #SYSTEM_LD+= -flto-partition=one -flto-report-wpa
113 #. endif
114 .endif
115
116 # The max-page-size for gnu ld is 0x200000 on x86_64
117 # For the gold linker, it is only 0x1000 on both x86_64
118 # The penalty for changing the gold default for x86_64 is larger binaries
119 # and shared libraries, and forcing them to use more address space than
120 # required.  The only application that needs such a large page size is the
121 # kernel itself, so leave the gold default alone and treat the kernel
122 # page size as an exception.
123 #
124 .if ${P} == "pc64"
125 SYSTEM_LD+= -Wl,-z,max-page-size=0x200000
126 .endif
127
128 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
129         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
130 SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
131
132 # Normalize output files to make it absolutely crystal clear to
133 # anyone examining the build directory.
134 #
135 .if defined(DEBUG)
136 FULLKERNEL=     ${KERNEL}.debug
137 .if defined(INSTALLSTRIPPED)
138 SELECTEDKERNEL= ${KERNEL}.stripped
139 .else
140 SELECTEDKERNEL= ${KERNEL}.debug
141 .endif
142 .else
143 FULLKERNEL=     ${KERNEL}.nodebug
144 SELECTEDKERNEL= ${KERNEL}.stripped
145 .endif
146
147
148 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
149 .if defined(MODULES_OVERRIDE)
150 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
151 .endif
152 .if defined(DEBUG)
153 MKMODULESENV+=  DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
154 .endif
155 .if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
156 MKMODULESENV+=  INSTALLSTRIPPEDMODULES=1
157 .endif
158 MKMODULESENV+=  MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
159