kernel: Some adjustments for the GCC 4.1 removal in Makefiles.
[dragonfly.git] / sys / conf / kern.pre.mk
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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
6KERNEL?= kernel
7
8# build this target if none is specified on the command line
9.MAIN: all
10
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11# Set the platform and machine architectures
12#
0955fd91 13P= ${MACHINE_PLATFORM}
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14M= ${MACHINE_ARCH}
15
16SIZE?= size
17OBJCOPY?= objcopy
18
19COPTFLAGS?=-O -pipe
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20#COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe
21#COPTFLAGS?=-O -fcrossjumping -pipe
22#COPTFLAGS?=-Os -fno-strict-aliasing -pipe
23#COPTFLAGS?=-O2 -fno-strict-aliasing -pipe
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24.if !defined(NO_CPU_COPTFLAGS)
25COPTFLAGS+= ${_CPUCFLAGS}
26.endif
27# don't use -I- so we can use proper source-relative locality for local
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28# includes.
29#
30# -I. - this is to access the opt_*.h and use_*.h header files generated
31# in the kernel build directory.
32#
33# -Iinclude
34# - this is used to access forwarding header files for
35# <machine/*.h> that exist in the cpu architecture but do not
36# exist in the platform (machine/) architecture. This allows
37# the platform to trivially override the cpu header files.
38#
39INCLUDES= -nostdinc -I. -Iinclude -I$S
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40# This hack is to allow kernel compiles to succeed on machines w/out srcdist
41.if exists($S/../include)
42INCLUDES+= -I$S/../include
43.else
44INCLUDES+= -I/usr/include
45.endif
46
47# This hack lets us use the Intel ACPICA code without spamming a new
48# include path into 100+ source files.
49.include "$S/conf/acpi.mk"
50INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include"
51
54170488 52# ... and the same for Atheros HAL
70966a77 53INCLUDES+= -I$S/dev/netif/ath/hal -I$S/dev/netif/ath/hal/ath_hal
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54
55COPTS= ${INCLUDES} ${IDENT} -D_KERNEL -include opt_global.h
56CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
57
58# XXX LOCORE means "don't declare C stuff" not "for locore.s".
59ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
60
61DEFINED_PROF= ${PROF}
62.if defined(PROF)
63CFLAGS+= -falign-functions=16
64.if ${PROFLEVEL} >= 2
65IDENT+= -DGPROF4 -DGUPROF
66PROF+= -mprofiler-epilogue
67.endif
68.endif
69
70# Put configuration-specific C flags last (except for ${PROF}) so that they
71# can override the others.
72CFLAGS+= ${CONF_CFLAGS}
73
74NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
75NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
76NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
77PROFILE_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
78
79NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
80 ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
81
1a885373 82.if !defined(NO_WERROR) && ${CCVER} == "gcc44"
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83WERROR=-Werror
84.endif
85
0955fd91 86GEN_CFILES= $S/platform/$P/$M/genassym.c
edbe133c 87SYSTEM_CFILES= ioconf.c config.c
0955fd91 88SYSTEM_SFILES= $S/platform/$P/$M/locore.s
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89SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
90SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
0955fd91 91SYSTEM_LD= @${LD} -Bdynamic -T $S/platform/$P/conf/ldscript.$M \
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92 -export-dynamic -dynamic-linker /red/herring \
93 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
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94
95# The max-page-size for gnu ld is 0x200000 on x86_64
96# For the gold linker, it is only 0x1000 on both x86_64 and i386
97# The penalty for changing the gold default for x86_64 is larger binaries
98# and shared libraries, and forcing them to use more address space than
99# required. The only application that needs such a large page size is the
100# kernel itself, so leave the gold default alone and treat the kernel
101# page size as an exception.
102#
103.if ${P} == "pc64" || ${P} == "vkernel64"
104SYSTEM_LD+= -z max-page-size=0x200000
105.elif ${P} == "pc32" || ${P} == "vkernel"
106SYSTEM_LD+= -z max-page-size=0x1000
107.endif
108
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109SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
110 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
0955fd91 111SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
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112
113# Normalize output files to make it absolutely crystal clear to
114# anyone examining the build directory.
115#
116.if defined(DEBUG)
117FULLKERNEL= ${KERNEL}.debug
118.if defined(INSTALLSTRIPPED)
119SELECTEDKERNEL= ${KERNEL}.stripped
120.else
121SELECTEDKERNEL= ${KERNEL}.debug
122.endif
123.else
124FULLKERNEL= ${KERNEL}.nodebug
125SELECTEDKERNEL= ${KERNEL}.stripped
126.endif
127
128
129MKMODULESENV= MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
130.if defined(MODULES_OVERRIDE)
131MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}"
132.endif
133.if defined(DEBUG)
134MKMODULESENV+= DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
135.endif
136.if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
137MKMODULESENV+= INSTALLSTRIPPEDMODULES=1
138.endif
982b0507 139MKMODULESENV+= MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
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