xref: /freebsd/stand/defs.mk (revision c1d255d3) 
1# $FreeBSD$
2
3.if !defined(__BOOT_DEFS_MK__)
4__BOOT_DEFS_MK__=${MFILE}
5
6# We need to define all the MK_ options before including src.opts.mk
7# because it includes bsd.own.mk which needs the right MK_ values,
8# espeically MK_CTF.
9
10MK_CTF=		no
11MK_SSP=		no
12MK_PROFILE=	no
13MK_PIE=		no
14MAN=
15.if !defined(PIC)
16NO_PIC=
17INTERNALLIB=
18.endif
19# Should be NO_CPU_FLAGS, but bsd.cpu.mk is included too early in bsd.init.mk
20# via the early include of bsd.opts.mk. Moving Makefile.inc include earlier in
21# that file causes weirdness, so this is the next best thing. We need to do this
22# because the loader needs very specific flags to work right, and things like
23# CPUTYPE?=native prevent that, and introduce an endless game of whack-a-mole
24# to disable more and more features. Boot loader performance is never improved
25# enough to make that hassle worth chasing.
26_CPUCFLAGS=
27
28.if ${LDFLAGS:M-nostdlib}
29# Sanitizers won't work unless we link against libc (e.g. in userboot/test).
30MK_ASAN:=	no
31MK_UBSAN:=	no
32.endif
33
34.include <src.opts.mk>
35.include <bsd.linker.mk>
36
37WARNS?=		1
38
39BOOTSRC=	${SRCTOP}/stand
40EFISRC=		${BOOTSRC}/efi
41EFIINC=		${EFISRC}/include
42EFIINCMD=	${EFIINC}/${MACHINE}
43FDTSRC=		${BOOTSRC}/fdt
44FICLSRC=	${BOOTSRC}/ficl
45LDRSRC=		${BOOTSRC}/common
46LIBLUASRC=	${BOOTSRC}/liblua
47LIBOFWSRC=	${BOOTSRC}/libofw
48LUASRC=		${SRCTOP}/contrib/lua/src
49SASRC=		${BOOTSRC}/libsa
50SYSDIR=		${SRCTOP}/sys
51UBOOTSRC=	${BOOTSRC}/uboot
52ZFSSRC=		${SASRC}/zfs
53OZFS=		${SRCTOP}/sys/contrib/openzfs
54ZFSOSSRC=	${OZFS}/module/os/freebsd/
55ZFSOSINC=	${OZFS}/include/os/freebsd
56LIBCSRC=	${SRCTOP}/lib/libc
57
58BOOTOBJ=	${OBJTOP}/stand
59
60# BINDIR is where we install
61BINDIR?=	/boot
62
63# LUAPATH is where we search for and install lua scripts.
64LUAPATH?=	/boot/lua
65FLUASRC?=	${SRCTOP}/libexec/flua
66
67LIBSA=		${BOOTOBJ}/libsa/libsa.a
68.if ${MACHINE} == "i386"
69LIBSA32=	${LIBSA}
70.else
71LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
72.endif
73
74# Standard options:
75CFLAGS+=	-nostdinc
76# Allow CFLAGS_EARLY.file/target so that code that needs specific stack
77# of include paths can set them up before our include paths. Normally
78# the only thing that should be there are -I directives, and as few of
79# those as possible.
80CFLAGS+=	${CFLAGS_EARLY} ${CFLAGS_EARLY.${.IMPSRC:T}} ${CFLAGS_EARLY.${.TARGET:T}}
81.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
82CFLAGS+=	-I${BOOTOBJ}/libsa32
83.else
84CFLAGS+=	-I${BOOTOBJ}/libsa
85.endif
86CFLAGS+=	-I${SASRC} -D_STANDALONE
87CFLAGS+=	-I${SYSDIR}
88# Spike the floating point interfaces
89CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
90.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
91# Slim down the image. This saves about 15% in size with clang 6 on x86
92# Our most constrained /boot/loader env is BIOS booting on x86, where
93# our text + data + BTX have to fit into 640k below the ISA hole.
94# Experience has shown that problems arise between ~520k to ~530k.
95CFLAGS.clang+=	-Oz
96CFLAGS.gcc+=	-Os
97CFLAGS+=	-ffunction-sections -fdata-sections
98.endif
99
100# GELI Support, with backward compat hooks (mostly)
101.if defined(LOADER_NO_GELI_SUPPORT)
102MK_LOADER_GELI=no
103.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
104.endif
105.if defined(LOADER_GELI_SUPPORT)
106MK_LOADER_GELI=yes
107.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
108.endif
109.if ${MK_LOADER_GELI} == "yes"
110CFLAGS+=	-DLOADER_GELI_SUPPORT
111CFLAGS+=	-I${SASRC}/geli
112.endif # MK_LOADER_GELI
113
114# These should be confined to loader.mk, but can't because uboot/lib
115# also uses it. It's part of loader, but isn't a loader so we can't
116# just include loader.mk
117.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
118CFLAGS+= -DLOADER_DISK_SUPPORT
119.endif
120
121# Machine specific flags for all builds here
122
123# Ensure PowerPC64 and PowerPC64LE boot loaders are compiled as 32 bit
124# and in big endian.
125.if ${MACHINE_ARCH:Mpowerpc64*} != ""
126CFLAGS+=	-m32 -mcpu=powerpc -mbig-endian
127.endif
128
129# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
130# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
131# and activate it when DO32 is explicitly defined to be 1.
132.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
133CFLAGS+=	-m32
134# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
135LD_FLAGS+=	-m elf_i386_fbsd
136AFLAGS+=	--32
137.endif
138
139# Add in the no float / no SIMD stuff and announce we're freestanding
140# aarch64 and riscv don't have -msoft-float, but all others do.
141CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
142.if ${MACHINE_CPUARCH} == "aarch64"
143CFLAGS+=	-mgeneral-regs-only -ffixed-x18 -fPIC
144.elif ${MACHINE_CPUARCH} == "riscv"
145CFLAGS+=	-march=rv64imac -mabi=lp64 -fPIC
146CFLAGS.clang+=	-mcmodel=medium
147CFLAGS.gcc+=	-mcmodel=medany
148.else
149CFLAGS+=	-msoft-float
150.endif
151
152# -msoft-float seems to be insufficient for powerpcspe
153.if ${MACHINE_ARCH} == "powerpcspe"
154CFLAGS+=	-mno-spe
155.endif
156
157.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
158CFLAGS+=	-march=i386
159CFLAGS.gcc+=	-mpreferred-stack-boundary=2
160.endif
161.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
162CFLAGS+=	-fPIC -mno-red-zone
163.endif
164
165.if ${MACHINE_CPUARCH} == "arm"
166# Do not generate movt/movw, because the relocation fixup for them does not
167# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
168# Also, the fpu is not available in a standalone environment.
169CFLAGS.clang+=	-mno-movt
170CFLAGS.clang+=  -mfpu=none
171CFLAGS+=	-fPIC
172.endif
173
174# Some RISC-V linkers have support for relaxations, while some (lld) do not
175# yet. If this is the case we inhibit the compiler from emitting relaxations.
176.if ${LINKER_FEATURES:Mriscv-relaxations} == ""
177CFLAGS+=	-mno-relax
178.endif
179
180# The boot loader build uses dd status=none, where possible, for reproducible
181# build output (since performance varies from run to run). Trouble is that
182# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
183# when this test succeeds rather than require dd to be a bootstrap tool.
184DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
185DD=dd ${DD_NOSTATUS}
186
187.if ${MACHINE_CPUARCH} == "mips"
188CFLAGS+=	-G0 -fno-pic -mno-abicalls
189.endif
190
191#
192# Have a sensible default
193#
194.if ${MK_LOADER_LUA} == "yes"
195LOADER_DEFAULT_INTERP?=lua
196.elif ${MK_FORTH} == "yes"
197LOADER_DEFAULT_INTERP?=4th
198.else
199LOADER_DEFAULT_INTERP?=simp
200.endif
201LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
202
203# Make sure we use the machine link we're about to create
204CFLAGS+=-I.
205
206all: ${PROG}
207
208CLEANFILES+= teken_state.h
209teken.c: teken_state.h
210
211teken_state.h: ${SYSDIR}/teken/sequences
212	awk -f ${SYSDIR}/teken/gensequences \
213		${SYSDIR}/teken/sequences > teken_state.h
214
215.if !defined(NO_OBJ)
216_ILINKS=include/machine
217.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
218_ILINKS+=include/${MACHINE_CPUARCH}
219.endif
220.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
221_ILINKS+=include/x86
222.endif
223CFLAGS+= -Iinclude
224CLEANDIRS+= include
225
226beforedepend: ${_ILINKS}
227beforebuild: ${_ILINKS}
228
229# Ensure that the links exist without depending on it when it exists which
230# causes all the modules to be rebuilt when the directory pointed to changes.
231.for _link in ${_ILINKS}
232.if !exists(${.OBJDIR}/${_link})
233${OBJS}:       ${_link}
234.endif # _link exists
235.endfor
236
237.NOPATH: ${_ILINKS}
238
239${_ILINKS}: .NOMETA
240	@case ${.TARGET:T} in \
241	machine) \
242		if [ ${DO32:U0} -eq 0 ]; then \
243			path=${SYSDIR}/${MACHINE}/include ; \
244		else \
245			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
246		fi ;; \
247	*) \
248		path=${SYSDIR}/${.TARGET:T}/include ;; \
249	esac ; \
250	case ${.TARGET} in \
251	*/*) mkdir -p ${.TARGET:H};; \
252	esac ; \
253	path=`(cd $$path && /bin/pwd)` ; \
254	${ECHO} ${.TARGET} "->" $$path ; \
255	ln -fns $$path ${.TARGET}
256.endif # !NO_OBJ
257.endif # __BOOT_DEFS_MK__
258