1#	$NetBSD: Makefile,v 1.149 2024/01/19 19:21:34 christos Exp $
2#
3# NOTE: when changing ld.so, ensure that ldd still compiles.
4#
5NOLIBCSANITIZER=# defined
6NOSANITIZER=	# defined
7WARNS?=4
8
9LDELFSO_MACHINE_ARCH?= ${MACHINE_ARCH}
10
11# This needs to be before bsd.init.mk
12.if defined(BSD_MK_COMPAT_FILE)
13.include <${BSD_MK_COMPAT_FILE}>
14.endif
15
16# We are not building this with PIE
17PIE_CFLAGS=
18PIE_LDFLAGS=
19.include <bsd.init.mk>			# for MKPIC definition
20.include <bsd.shlib.mk>			# for SHLINKINSTALLDIR definition
21
22.if defined(LDELFSO_MACHINE_CPU) && !empty(LDELFSO_MACHINE_CPU) && \
23    exists(${.CURDIR}/arch/${LDELFSO_MACHINE_CPU})
24ARCHSUBDIR=	${LDELFSO_MACHINE_CPU}
25.else
26ARCHSUBDIR=	${MACHINE_CPU}
27.endif
28M=		${.CURDIR}/arch/${ARCHSUBDIR}
29
30.if ((${MACHINE_CPU} == "aarch64") ||					\
31     (${LDELFSO_MACHINE_ARCH} == "alpha") ||				\
32     (${MACHINE_CPU} == "arm") ||					\
33     (${LDELFSO_MACHINE_ARCH} == "coldfire") ||				\
34     (${LDELFSO_MACHINE_ARCH} == "hppa") ||				\
35     (${LDELFSO_MACHINE_ARCH} == "i386") ||				\
36     (${LDELFSO_MACHINE_ARCH} == "m68k") ||				\
37     (${MACHINE_CPU} == "mips") ||					\
38     (${MACHINE_CPU} == "or1k") ||					\
39     (${MACHINE_CPU} == "powerpc") ||					\
40     (${MACHINE_CPU} == "riscv") ||					\
41     (${MACHINE_CPU} == "sh3") ||					\
42     (${LDELFSO_MACHINE_ARCH} == "sparc") ||				\
43     (${LDELFSO_MACHINE_ARCH} == "sparc64") ||				\
44     (${LDELFSO_MACHINE_ARCH} == "x86_64") ||				\
45     (${LDELFSO_MACHINE_ARCH} == "vax")) &&				\
46    ${MKPIC} != "no"
47
48LDFLAGS+=	${${ACTIVE_CC} == "clang":? -Wl,-Bsymbolic : -symbolic} \
49		-shared -nostartfiles -nodefaultlibs
50LDFLAGS+=	-Wl,-static
51LDFLAGS+=	-Wl,--warn-shared-textrel
52LDFLAGS+=	-Wl,--no-undefined
53LDFLAGS+=	-Wl,-Map=${.TARGET}.map
54
55COPTS+=		-fvisibility=hidden
56
57# Adds SRCS, CPPFLAGS, LDFLAGS, etc.  Must go first so MD startup source
58# is first.
59.if exists($M/Makefile.inc)
60.include "$M/Makefile.inc"
61.endif
62
63# Support compat ld.elf_so.
64.if defined(MLIBDIR)
65PROG=		ld.elf_so-${MLIBDIR}
66CPPFLAGS+=	-DRTLD_ARCH_SUBDIR=\"${MLIBDIR}\"
67.	if ${MLIBDIR} == "o32"
68.	endif
69.else
70PROG=		ld.elf_so
71.endif
72
73CLIBOBJ!=	cd ${NETBSDSRCDIR}/lib/libc && ${PRINTOBJDIR}
74
75SRCS+=		compat.c
76SRCS+=		debug.c
77SRCS+=		diagassert.c
78SRCS+=		expand.c
79SRCS+=		hash.c
80SRCS+=		headers.c
81SRCS+=		load.c
82SRCS+=		map_object.c
83SRCS+=		paths.c
84SRCS+=		reloc.c
85SRCS+=		rtld.c
86SRCS+=		search.c
87SRCS+=		symbol.c
88SRCS+=		symver.c
89SRCS+=		tls.c
90SRCS+=		xmalloc.c
91SRCS+=		xprintf.c
92
93.if ${USE_FORT} == "yes"
94.PATH.c: ${NETBSDSRCDIR}/lib/libc/misc
95SRCS+=		stack_protector.c
96.endif
97
98.PATH.c: ${NETBSDSRCDIR}/lib/libc/stdlib
99SRCS+=		exit.c
100
101errlist_concat.h: ${NETBSDSRCDIR}/lib/libc/gen/errlist.awk ${NETBSDSRCDIR}/sys/sys/errno.h
102	${TOOL_AWK} -v concat=1 -f ${.ALLSRC} > ${.TARGET}.tmp && \
103	mv -f ${.TARGET}.tmp ${.TARGET}
104
105xprintf.c: errlist_concat.h
106
107CLEANFILES+=	errlist_concat.h ${PROG}.map
108
109BINDIR=		${SHLINKINSTALLDIR}
110
111CPPFLAGS.tls.c+=	-std=gnu11
112CPPFLAGS+=	-DLIBDIR=\"${LIBDIR}\" -D_PATH_RTLD=\"${BINDIR}/${PROG}\"
113CPPFLAGS+=	-I${.CURDIR} -I. -D_KERNTYPES
114CPPFLAGS+=	-DRTLD_LOADER -D_LIBC_INTERNAL
115CPPFLAGS+=	-DGNU_RELRO
116CPPFLAGS+=	-D_RTLD_SOURCE
117CPPFLAGS+=	-DHAVE_INITFINI_ARRAY
118#CPPFLAGS+=	-DDEBUG
119#CPPFLAGS+=	-DRTLD_DEBUG
120#CPPFLAGS+=	-DRTLD_DEBUG_RELOC
121.if !empty(LDELFSO_MACHINE_ARCH:Mearm*)
122CPPFLAGS+=	-I${NETBSDSRCDIR}/lib/libexecinfo
123.endif
124#DBG=		-g
125COPTS+=		-O3
126
127.if ${MACHINE_CPU} != "m68k" && ${MACHINE_CPU} != "sh3" && ${MACHINE_ARCH} != "vax"
128COPTS+=		-fomit-frame-pointer
129.endif
130
131.if ${LDELFSO_MACHINE_ARCH} == "i386" || ${LDELFSO_MACHINE_ARCH} == "x86_64"
132COPTS+=		-mno-3dnow -mno-mmx -mno-sse -mno-sse2 -mno-sse3
133.endif
134
135
136.if ${SHLIBDIR} != ${LIBDIR}
137CPPFLAGS+=	-DRTLD_DEFAULT_LIBRARY_PATH=\"${SHLIBDIR}:${LIBDIR}\"
138.endif
139
140# rtld.c and symbol.c use alloca, so disable SSP warnings.
141COPTS.rtld.c+=	-Wno-stack-protector
142COPTS.symbol.c+=-Wno-stack-protector
143
144LDADD+=		-Wl,--version-script=${.CURDIR}/symbols.map
145LDADD+=		-L${CLIBOBJ} -L${DESTDIR}${LIBDIR}
146.if ${MKPICLIB} != "no"
147LDADD+=		-lc_pic
148.if ${MKPICINSTALL} != "no"
149DPADD+=		${LIBC_PIC}
150.endif
151DPADD+=		${CLIBOBJ}/libc_pic.a
152.else
153LDADD+=		-lc
154DPADD+=		${CLIBOBJ}/libc.a
155.endif
156
157.if ${MACHINE_CPU} == "hppa" || ${MACHINE_CPU} == "sh3"
158# for $$divU, $$remU etc. (millicode)
159LDADD+=		-lgcc
160DPADD+=		${LIBGCC}
161.endif
162
163STRIPFLAG=
164
165.PATH: $M
166
167
168${PROG}: ${OBJS} ${DPADD}
169	${_MKMSG_LINK} ${PROG}
170	${CC} ${LDFLAGS} -o ${PROG} ${OBJS} ${LDADD}
171.if ${MKDEBUG} != "no"
172	(  ${OBJCOPY} --only-keep-debug ${.TARGET} ${.TARGET}.debug \
173	   && ${OBJCOPY} --strip-debug -p -R .gnu_debuglink \
174	   --add-gnu-debuglink=${.TARGET}.debug ${.TARGET} \
175	) || (rm -f ${.TARGET}.debug; false)
176
177_PROGDEBUG.${PROG} := ${PROG}.debug
178.endif
179
180
181.if ${SHLINKINSTALLDIR} != "/usr/libexec"
182SYMLINKS+=	${SHLINKINSTALLDIR}/${PROG} /usr/libexec/${PROG}
183.if ${MKDEBUG} != "no"
184SYMLINKS+=	${DEBUGDIR}${BINDIR}/${PROG}.debug \
185		${DEBUGDIR}/usr${BINDIR}/${PROG}.debug
186.endif
187.endif
188
189.include <bsd.prog.mk>
190.else
191
192MAN=		ld.elf_so.1
193
194.include <bsd.man.mk>
195.endif
196