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 11# Set the platform and machine architectures 12# 13P= ${MACHINE_PLATFORM} 14M= ${MACHINE_ARCH} 15 16SIZE?= size 17OBJCOPY?= objcopy 18 19COPTFLAGS?=-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) 26COPTFLAGS+= ${_CPUCFLAGS} 27.endif 28# don't use -I- so we can use proper source-relative locality for local 29# includes. 30# 31# -I. - this is to access the opt_*.h and use_*.h header files generated 32# in the kernel build directory. 33# 34# -Iinclude 35# - this is used to access forwarding header files for 36# <machine/*.h> that exist in the cpu architecture but do not 37# exist in the platform (machine/) architecture. This allows 38# the platform to trivially override the cpu header files. 39# 40INCLUDES= -nostdinc -I. -Iinclude -I$S 41# This hack is to allow kernel compiles to succeed on machines w/out srcdist 42.if exists($S/../include) 43INCLUDES+= -I$S/../include 44.else 45INCLUDES+= -I/usr/include 46.endif 47 48# For <openssl/headerfile> 49# 50INCLUDES+= -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" 55INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include" 56 57# ... and the same for Atheros HAL 58INCLUDES+= -I$S/dev/netif/ath/ath_hal -I$S/contrib/dev/ath/ath_hal 59 60# Same thing for drm includes 61INCLUDES+= -I$S/dev/drm/include 62INCLUDES+= -I$S/dev/drm/include/drm 63INCLUDES+= -I$S/dev/drm/include/uapi 64 65COPTS= ${INCLUDES} ${IDENT} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 66CFLAGS= ${COPTFLAGS} ${KCFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS} 67 68# XXX LOCORE means "don't declare C stuff" not "for locore.s". 69ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS:N-flto} 70 71# Put configuration-specific C flags last so that they 72# can override the others. 73CFLAGS+= ${CONF_CFLAGS} 74 75# XXX handle this explicitly, fw wrappers use implicit .c.o: rule (LINT64) 76.if defined(FASTER_DEPEND) 77CFLAGS+= -MD 78.endif 79 80NORMAL_C= ${CC} -c ${CFLAGS} ${.IMPSRC} 81NORMAL_C_C= ${CC} -c ${CFLAGS} ${.IMPSRC} 82NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC} 83 84NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \ 85 ${CC} -c ${CFLAGS} ${.PREFIX}.c 86 87NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 88NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw} 89 90.if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc50" || ${CCVER} == "gcc80") 91WERROR=-Werror 92.endif 93 94GEN_CFILES= $S/platform/$P/$M/genassym.c 95SYSTEM_CFILES= ioconf.c config.c 96SYSTEM_SFILES= $S/platform/$P/$M/locore.s 97SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 98SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So 99SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \ 100 -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \ 101 -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \ 102 -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o 103 104# In case of LTO provide all standard CFLAGS! 105.if ${CFLAGS:M-flto} 106SYSTEM_LD+= ${CFLAGS} 107## This one eats a lot of ram, may be needed to correctly link the kernel. 108## Default "balanced" might create kernel that "Fatal trap 12" on boot!!! 109#. if !${CFLAGS:M-flto-partition=*} 110#SYSTEM_LD+= -flto-partition=one -flto-report-wpa 111#. endif 112.endif 113 114# The max-page-size for gnu ld is 0x200000 on x86_64 115# For the gold linker, it is only 0x1000 on both x86_64 116# The penalty for changing the gold default for x86_64 is larger binaries 117# and shared libraries, and forcing them to use more address space than 118# required. The only application that needs such a large page size is the 119# kernel itself, so leave the gold default alone and treat the kernel 120# page size as an exception. 121# 122.if ${P} == "pc64" 123SYSTEM_LD+= -Wl,-z,max-page-size=0x200000 124.endif 125 126SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 127 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 128SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M 129 130# Normalize output files to make it absolutely crystal clear to 131# anyone examining the build directory. 132# 133.if defined(DEBUG) 134FULLKERNEL= ${KERNEL}.debug 135.if defined(INSTALLSTRIPPED) 136SELECTEDKERNEL= ${KERNEL}.stripped 137.else 138SELECTEDKERNEL= ${KERNEL}.debug 139.endif 140.else 141FULLKERNEL= ${KERNEL}.nodebug 142SELECTEDKERNEL= ${KERNEL}.stripped 143.endif 144 145 146MKMODULESENV= MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR} 147.if defined(MODULES_OVERRIDE) 148MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 149.endif 150.if defined(DEBUG) 151MKMODULESENV+= DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}" 152.endif 153.if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES) 154MKMODULESENV+= INSTALLSTRIPPEDMODULES=1 155.endif 156MKMODULESENV+= MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM} 157 158