defs.mk revision 344455 
1# $FreeBSD: stable/11/stand/defs.mk 344455 2019-02-22 03:10:24Z kevans $
2
3.include <src.opts.mk>
4
5WARNS?=1
6
7.if !defined(__BOOT_DEFS_MK__)
8__BOOT_DEFS_MK__=${MFILE}
9
10MK_CTF=		no
11MK_SSP=		no
12MK_PROFILE=	no
13MAN=
14.if !defined(PIC)
15NO_PIC=
16INTERNALLIB=
17.endif
18
19BOOTSRC=	${SRCTOP}/stand
20EFISRC=		${BOOTSRC}/efi
21EFIINC=		${EFISRC}/include
22EFIINCMD=	${EFIINC}/${MACHINE}
23FDTSRC=		${BOOTSRC}/fdt
24FICLSRC=	${BOOTSRC}/ficl
25LDRSRC=		${BOOTSRC}/common
26LIBLUASRC=	${BOOTSRC}/liblua
27LUASRC=		${SRCTOP}/contrib/lua/src
28SASRC=		${BOOTSRC}/libsa
29SYSDIR=		${SRCTOP}/sys
30UBOOTSRC=	${BOOTSRC}/uboot
31ZFSSRC=		${SASRC}/zfs
32
33BOOTOBJ=	${OBJTOP}/stand
34
35# BINDIR is where we install
36BINDIR?=	/boot
37
38LIBSA=		${BOOTOBJ}/libsa/libsa.a
39.if ${MACHINE} == "i386"
40LIBSA32=	${LIBSA}
41.else
42LIBSA32=	${BOOTOBJ}/libsa32/libsa32.a
43.endif
44
45# Standard options:
46CFLAGS+=	-nostdinc
47.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
48CFLAGS+=	-I${BOOTOBJ}/libsa32
49.else
50CFLAGS+=	-I${BOOTOBJ}/libsa
51.endif
52CFLAGS+=	-I${SASRC} -D_STANDALONE
53CFLAGS+=	-I${SYSDIR}
54# Spike the floating point interfaces
55CFLAGS+=	-Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
56.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
57# Slim down the image. This saves about 15% in size with clang 6 on x86
58# Our most constrained /boot/loader env is BIOS booting on x86, where
59# our text + data + BTX have to fit into 640k below the ISA hole.
60# Experience has shown that problems arise between ~520k to ~530k.
61CFLAGS.clang+=	-Oz
62CFLAGS.gcc+=	-Os
63.endif
64
65# GELI Support, with backward compat hooks (mostly)
66.if defined(LOADER_NO_GELI_SUPPORT)
67MK_LOADER_GELI=no
68.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
69.endif
70.if defined(LOADER_GELI_SUPPORT)
71MK_LOADER_GELI=yes
72.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
73.endif
74.if ${MK_LOADER_GELI} == "yes"
75CFLAGS+=	-DLOADER_GELI_SUPPORT
76CFLAGS+=	-I${SASRC}/geli
77.endif # MK_LOADER_GELI
78
79# These should be confined to loader.mk, but can't because uboot/lib
80# also uses it. It's part of loader, but isn't a loader so we can't
81# just include loader.mk
82.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
83CFLAGS+= -DLOADER_DISK_SUPPORT
84.endif
85
86# Machine specific flags for all builds here
87
88# All PowerPC builds are 32 bit. We have no 64-bit loaders on powerpc
89# or powerpc64.
90.if ${MACHINE_ARCH} == "powerpc64"
91CFLAGS+=	-m32 -mcpu=powerpc
92.endif
93
94# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
95# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
96# and activate it when DO32 is explicitly defined to be 1.
97.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
98CFLAGS+=	-m32
99# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
100LD_FLAGS+=	-m elf_i386_fbsd
101AFLAGS+=	--32
102.endif
103
104SSP_CFLAGS=
105
106# Add in the no float / no SIMD stuff and announce we're freestanding
107# aarch64 and riscv don't have -msoft-float, but all others do. riscv
108# currently has no /boot/loader, but may soon.
109CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
110.if ${MACHINE_CPUARCH} == "aarch64"
111CFLAGS+=	-mgeneral-regs-only -fPIC
112.elif ${MACHINE_CPUARCH} == "riscv"
113CFLAGS+=	-march=rv64imac -mabi=lp64
114.else
115CFLAGS+=	-msoft-float
116.endif
117
118.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
119CFLAGS+=	-march=i386
120CFLAGS.gcc+=	-mpreferred-stack-boundary=2
121.endif
122.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
123CFLAGS+=	-fPIC -mno-red-zone
124.endif
125
126.if ${MACHINE_CPUARCH} == "arm"
127# Do not generate movt/movw, because the relocation fixup for them does not
128# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
129# Also, the fpu is not available in a standalone environment.
130.if ${COMPILER_VERSION} < 30800
131CFLAGS.clang+=	-mllvm -arm-use-movt=0
132.else
133CFLAGS.clang+=	-mno-movt
134.endif
135CFLAGS.clang+=  -mfpu=none
136CFLAGS+=	-fPIC
137.endif
138
139# The boot loader build uses dd status=none, where possible, for reproducible
140# build output (since performance varies from run to run). Trouble is that
141# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
142# when this test succeeds rather than require dd to be a bootstrap tool.
143DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
144DD=dd ${DD_NOSTATUS}
145
146.if ${MACHINE_CPUARCH} == "mips"
147CFLAGS+=	-G0 -fno-pic -mno-abicalls
148.endif
149
150.if ${MK_LOADER_FORCE_LE} != "no"
151.if ${MACHINE_ARCH} == "powerpc64"
152CFLAGS+=	-mlittle-endian
153.endif
154.endif
155
156#
157# Have a sensible default
158#
159# XXX Do not change the ordering of this chain in this branch.  4th must remain
160# the default for the lifetime of stable/11.
161.if ${MK_FORTH} == "yes"
162LOADER_DEFAULT_INTERP?=4th
163.elif ${MK_LOADER_LUA} == "yes"
164LOADER_DEFAULT_INTERP?=lua
165.else
166LOADER_DEFAULT_INTERP?=simp
167.endif
168LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
169
170# Make sure we use the machine link we're about to create
171CFLAGS+=-I.
172
173all: ${PROG}
174
175.if !defined(NO_OBJ)
176_ILINKS=machine
177.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
178_ILINKS+=${MACHINE_CPUARCH}
179.endif
180.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
181_ILINKS+=x86
182.endif
183CLEANFILES+=${_ILINKS}
184
185beforedepend: ${_ILINKS}
186beforebuild: ${_ILINKS}
187
188# Ensure that the links exist without depending on it when it exists which
189# causes all the modules to be rebuilt when the directory pointed to changes.
190.for _link in ${_ILINKS}
191.if !exists(${.OBJDIR}/${_link})
192${OBJS}:       ${_link}
193.endif # _link exists
194.endfor
195
196.NOPATH: ${_ILINKS}
197
198${_ILINKS}:
199	@case ${.TARGET} in \
200	machine) \
201		if [ ${DO32:U0} -eq 0 ]; then \
202			path=${SYSDIR}/${MACHINE}/include ; \
203		else \
204			path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
205		fi ;; \
206	*) \
207		path=${SYSDIR}/${.TARGET:T}/include ;; \
208	esac ; \
209	path=`(cd $$path && /bin/pwd)` ; \
210	${ECHO} ${.TARGET:T} "->" $$path ; \
211	ln -fhs $$path ${.TARGET:T}
212.endif # !NO_OBJ
213.endif # __BOOT_DEFS_MK__
214