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dc8ccf95a8
i386). Use -mprofiler-epilogue again, and don't use -finstrument-functions. The former has been fixed for arches that implement high-res profiling, and the latter has been useless for kernel profiling since gcc-3.4 when it started forcing -fno-inline. -fno-inline gives a kernel with performance characteristics too different from a normal kernel to be worth profiling, by turning off inlining of all the little optimized functions in headers. This interacts especially badly with FreeBSD's use of "static inline" for all inlines in headers, by creating many separate copies of the little functions, so not inlining tends to increase cache pressure where it should reduce it, and (since gprof(1) doesn't understand the copies) the statistics for the little functions are hard to interpret even if you want them.
153 lines
3.8 KiB
Makefile
153 lines
3.8 KiB
Makefile
# $FreeBSD$
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# Part of a unified Makefile for building kernels. This part contains all
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# of the definitions that need to be before %BEFORE_DEPEND.
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SRCCONF?= /etc/src.conf
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.if exists(${SRCCONF})
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.include "${SRCCONF}"
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.endif
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# Can be overridden by makeoptions or /etc/make.conf
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KERNEL_KO?= kernel
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KERNEL?= kernel
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KODIR?= /boot/${KERNEL}
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M= ${MACHINE_ARCH}
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AWK?= awk
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LINT?= lint
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NM?= nm
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OBJCOPY?= objcopy
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SIZE?= size
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.if ${CC} == "icc"
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COPTFLAGS?= -O
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.else
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. if defined(DEBUG)
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_MINUS_O= -O
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. else
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_MINUS_O= -O2
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. endif
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. if ${MACHINE_ARCH} == "amd64"
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COPTFLAGS?=-O2 -frename-registers -pipe
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. else
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COPTFLAGS?=${_MINUS_O} -pipe
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. endif
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. if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
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COPTFLAGS+= -fno-strict-aliasing
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. endif
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.endif
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.if !defined(NO_CPU_COPTFLAGS)
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. if ${CC} == "icc"
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COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
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. else
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COPTFLAGS+= ${_CPUCFLAGS}
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. endif
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.endif
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.if ${CC} == "icc"
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C_DIALECT=
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NOSTDINC= -X
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.else
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C_DIALECT= -std=c99
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NOSTDINC= -nostdinc
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.endif
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INCLUDES= ${NOSTDINC} -I- ${INCLMAGIC} -I. -I$S
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# This hack lets us use the OpenBSD altq code without spamming a new
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# include path into contrib'ed source files.
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INCLUDES+= -I$S/contrib/altq
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.if make(depend) || make(kernel-depend)
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# ... and the same for ipfilter
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INCLUDES+= -I$S/contrib/ipfilter
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# ... and the same for pf
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INCLUDES+= -I$S/contrib/pf
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# ... and the same for Atheros HAL
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INCLUDES+= -I$S/dev/ath
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# ... and the same for the NgATM stuff
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INCLUDES+= -I$S/contrib/ngatm
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# .. and the same for twa
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INCLUDES+= -I$S/dev/twa
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# ... and XFS
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INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
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.endif
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CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
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CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
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.if ${CC} != "icc"
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CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
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CFLAGS+= --param inline-unit-growth=100
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CFLAGS+= --param large-function-growth=1000
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WERROR?= -Werror
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.endif
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# XXX LOCORE means "don't declare C stuff" not "for locore.s".
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ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
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.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
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.if ${CC} == "icc"
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.error "Profiling doesn't work with icc yet"
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.endif
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CFLAGS+= -DGPROF -falign-functions=16
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.if ${PROFLEVEL} >= 2
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CFLAGS+= -DGPROF4 -DGUPROF
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PROF= -pg -mprofiler-epilogue
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.else
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PROF= -pg
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.endif
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.endif
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DEFINED_PROF= ${PROF}
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# Put configuration-specific C flags last (except for ${PROF}) so that they
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# can override the others.
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CFLAGS+= ${CONF_CFLAGS}
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# Optional linting. This can be overridden in /etc/make.conf.
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LINTFLAGS= ${LINTOBJKERNFLAGS}
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NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
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NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
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PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
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NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
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NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
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${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
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NORMAL_LINT= ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
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GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
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SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
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SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
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SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
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SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
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SYSTEM_OBJS+= hack.So
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SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
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-warn-common -export-dynamic -dynamic-linker /red/herring \
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-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
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SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
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${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
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SYSTEM_DEP+= $S/conf/ldscript.$M
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# MKMODULESENV is set here so that port makefiles can augment
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# them.
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MKMODULESENV= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
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.if (${KERN_IDENT} == LINT)
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MKMODULESENV+= ALL_MODULES=LINT
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.endif
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.if defined(MODULES_OVERRIDE)
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MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}"
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.endif
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.if defined(DEBUG)
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MKMODULESENV+= DEBUG_FLAGS="${DEBUG}"
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.endif
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