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# If a different binutils is installed in /usr/local it probably 9# won't recognize LDVER or use the default, creating an incompatibility 10# between buildkernel and nativekernel as well as between buildkernel and 11# manual make's inside /usr/obj/usr/src/sys/KERNEL_CONFIG. 12# 13# /usr/local/bin must be removed from the path. 14# 15RMLDPATH=/usr/local/bin 16PATH:=${PATH:C/${RMLDPATH}//g} 17.export PATH 18 19fubar: 20 echo ${PATH} 21 22# build this target if none is specified on the command line 23.MAIN: all 24 25# Set the platform and machine architectures 26# 27P= ${MACHINE_PLATFORM} 28M= ${MACHINE_ARCH} 29 30SIZE?= size 31OBJCOPY?= objcopy 32 33COPTFLAGS?=-O2 -pipe 34#COPTFLAGS?=-O -pipe -flto -fno-fat-lto-objects 35#COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe 36#COPTFLAGS?=-O -fcrossjumping -pipe 37#COPTFLAGS?=-Os -fno-strict-aliasing -pipe 38#COPTFLAGS?=-O2 -fno-strict-aliasing -pipe 39 40# always use external as(1) 41.if ${CCVER:Mclang*} 42COPTFLAGS+= -no-integrated-as 43.endif 44 45.if !defined(NO_CPU_COPTFLAGS) 46COPTFLAGS+= ${_CPUCFLAGS} 47.endif 48 49# don't use -I- so we can use proper source-relative locality for local 50# includes. 51# 52# -I. - this is to access the opt_*.h and use_*.h header files generated 53# in the kernel build directory. 54# 55# -Iinclude 56# - this is used to access forwarding header files for 57# <machine/*.h> that exist in the cpu architecture but do not 58# exist in the platform (machine/) architecture. This allows 59# the platform to trivially override the cpu header files. 60# 61INCLUDES= -nostdinc -I. -Iinclude -I$S 62# Real kernel builds do not need /usr/include, but vkernel builds do. 63# 64.if ${MACHINE_PLATFORM} == "vkernel64" 65.if exists($S/../include) 66INCLUDES+= -I$S/../include 67.else 68INCLUDES+= -I/usr/include 69.endif 70.endif 71 72# This hack lets us use the Intel ACPICA code without spamming a new 73# include path into 100+ source files. 74.include "$S/conf/acpi.mk" 75INCLUDES+= -I${.OBJDIR} -I$S/${OSACPI_MI_DIR} -I$S/${ACPICA_DIR}/include 76 77# ... and the same for Atheros HAL 78INCLUDES+= -I$S/dev/netif/ath/ath_hal -I$S/contrib/dev/ath/ath_hal 79 80# Same thing for drm includes 81INCLUDES+= -I$S/dev/drm/include 82INCLUDES+= -I$S/dev/drm/include/drm 83INCLUDES+= -I$S/dev/drm/include/uapi 84INCLUDES+= -I$S/dev/drm/amd/include 85 86COPTS= ${INCLUDES} ${IDENT} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 87CFLAGS= ${COPTFLAGS} ${KCFLAGS} ${CWARNFLAGS} -std=${CSTD} ${DEBUG} ${COPTS} 88 89# XXX LOCORE means "don't declare C stuff" not "for locore.s". 90ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS:N-flto} 91 92# Put configuration-specific C flags last so that they 93# can override the others. 94CFLAGS+= ${CONF_CFLAGS} 95 96# XXX handle this explicitly, fw wrappers use implicit .c.o: rule (LINT64) 97.if defined(FASTER_DEPEND) 98CFLAGS+= -MD 99.endif 100 101NORMAL_C= ${CC} -c ${CFLAGS} ${.IMPSRC} 102NORMAL_C_C= ${CC} -c ${CFLAGS} ${.IMPSRC} 103NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC} 104 105NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \ 106 ${CC} -c ${CFLAGS} ${.PREFIX}.c 107 108NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 109NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw} 110 111.if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc80") 112WERROR=-Werror 113.endif 114 115GEN_CFILES= $S/platform/$P/$M/genassym.c 116SYSTEM_CFILES= ioconf.c config.c 117SYSTEM_SFILES= $S/platform/$P/$M/locore.s 118SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 119SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So 120SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \ 121 -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \ 122 -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \ 123 -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o 124 125# In case of LTO provide all standard CFLAGS! 126.if ${CFLAGS:M-flto} 127SYSTEM_LD+= ${CFLAGS} 128## This one eats a lot of ram, may be needed to correctly link the kernel. 129## Default "balanced" might create kernel that "Fatal trap 12" on boot!!! 130#. if !${CFLAGS:M-flto-partition=*} 131#SYSTEM_LD+= -flto-partition=one -flto-report-wpa 132#. endif 133.endif 134 135# The max-page-size for gnu ld is 0x200000 on x86_64 136# For the gold linker, it is only 0x1000 on both x86_64 137# The penalty for changing the gold default for x86_64 is larger binaries 138# and shared libraries, and forcing them to use more address space than 139# required. The only application that needs such a large page size is the 140# kernel itself, so leave the gold default alone and treat the kernel 141# page size as an exception. 142# 143.if ${P} == "pc64" 144SYSTEM_LD+= -Wl,-z,max-page-size=0x200000 145.endif 146 147SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 148 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 149SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M 150 151# Normalize output files to make it absolutely crystal clear to 152# anyone examining the build directory. 153# 154.if defined(DEBUG) 155FULLKERNEL= ${KERNEL}.debug 156.if defined(INSTALLSTRIPPED) 157SELECTEDKERNEL= ${KERNEL}.stripped 158.else 159SELECTEDKERNEL= ${KERNEL}.debug 160.endif 161.else 162FULLKERNEL= ${KERNEL}.nodebug 163SELECTEDKERNEL= ${KERNEL}.stripped 164.endif 165 166 167MKMODULESENV= MAKEOBJDIRPREFIX=${.OBJDIR} KERNBUILDDIR=${.OBJDIR} 168.if defined(MODULES_OVERRIDE) 169MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 170.endif 171.if defined(DEBUG) 172MKMODULESENV+= DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}" 173.endif 174.if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES) 175MKMODULESENV+= INSTALLSTRIPPEDMODULES=1 176.endif 177MKMODULESENV+= MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM} 178 179