Makefile revision 1.144 
1#	$NetBSD: Makefile,v 1.144 2021/12/04 08:45:56 skrll 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+=		rtld.c reloc.c symbol.c xmalloc.c xprintf.c debug.c \
76		map_object.c load.c search.c headers.c paths.c expand.c \
77		tls.c symver.c diagassert.c compat.c
78
79.if ${USE_FORT} == "yes"
80.PATH.c: ${NETBSDSRCDIR}/lib/libc/misc
81SRCS+=		stack_protector.c
82.endif
83
84.PATH.c: ${NETBSDSRCDIR}/lib/libc/stdlib
85SRCS+=		exit.c
86
87errlist_concat.h: ${NETBSDSRCDIR}/lib/libc/gen/errlist.awk ${NETBSDSRCDIR}/sys/sys/errno.h
88	${TOOL_AWK} -v concat=1 -f ${.ALLSRC} > ${.TARGET}.tmp && \
89	mv -f ${.TARGET}.tmp ${.TARGET}
90
91xprintf.c: errlist_concat.h
92
93CLEANFILES+=	errlist_concat.h ${PROG}.map
94
95BINDIR=		${SHLINKINSTALLDIR}
96
97CPPFLAGS.tls.c+=	-std=gnu11
98CPPFLAGS+=	-DLIBDIR=\"${LIBDIR}\" -D_PATH_RTLD=\"${BINDIR}/${PROG}\"
99CPPFLAGS+=	-I${.CURDIR} -I. -D_KERNTYPES
100CPPFLAGS+=	-DRTLD_LOADER
101CPPFLAGS+=	-DGNU_RELRO
102CPPFLAGS+=	-D_RTLD_SOURCE
103CPPFLAGS+=	-DHAVE_INITFINI_ARRAY
104#CPPFLAGS+=	-DDEBUG
105#CPPFLAGS+=	-DRTLD_DEBUG
106#CPPFLAGS+=	-DRTLD_DEBUG_RELOC
107.if !empty(LDELFSO_MACHINE_ARCH:Mearm*)
108CPPFLAGS+=	-I${NETBSDSRCDIR}/lib/libexecinfo
109.endif
110#DBG=		-g
111COPTS+=		-O3
112
113.if ${MACHINE_CPU} != "m68k" && ${MACHINE_CPU} != "sh3" && ${MACHINE_ARCH} != "vax"
114COPTS+=		-fomit-frame-pointer
115.endif
116
117.if ${LDELFSO_MACHINE_ARCH} == "i386" || ${LDELFSO_MACHINE_ARCH} == "x86_64"
118COPTS+=		-mno-3dnow -mno-mmx -mno-sse -mno-sse2 -mno-sse3
119.endif
120
121
122.if ${SHLIBDIR} != ${LIBDIR}
123CPPFLAGS+=	-DRTLD_DEFAULT_LIBRARY_PATH=\"${SHLIBDIR}:${LIBDIR}\"
124.endif
125
126# rtld.c and symbol.c use alloca, so disable SSP warnings.
127COPTS.rtld.c+=	-Wno-stack-protector
128COPTS.symbol.c+=-Wno-stack-protector
129
130.if ${MACHINE_CPU} == "vax"
131COPTS.rtld.c+=	-O0
132.endif
133
134LDADD+=		-Wl,--version-script=${.CURDIR}/symbols.map
135LDADD+=		-L${CLIBOBJ} -L${DESTDIR}${LIBDIR}
136.if ${MKPICLIB} != "no"
137LDADD+=		-lc_pic
138.if ${MKPICINSTALL} != "no"
139DPADD+=		${LIBC_PIC}
140.endif
141DPADD+=		${CLIBOBJ}/libc_pic.a
142.else
143LDADD+=		-lc
144DPADD+=		${CLIBOBJ}/libc.a
145.endif
146
147.if ${MACHINE_CPU} == "hppa" || ${MACHINE_CPU} == "sh3"
148# for $$divU, $$remU etc. (millicode)
149LDADD+=		-lgcc
150DPADD+=		${LIBGCC}
151.endif
152
153STRIPFLAG=
154
155.PATH: $M
156
157
158${PROG}: ${OBJS} ${DPADD}
159	${_MKMSG_LINK} ${PROG}
160	${CC} ${LDFLAGS} -o ${PROG} ${OBJS} ${LDADD}
161.if ${MKDEBUG} != "no"
162	(  ${OBJCOPY} --only-keep-debug ${.TARGET} ${.TARGET}.debug \
163	   && ${OBJCOPY} --strip-debug -p -R .gnu_debuglink \
164	   --add-gnu-debuglink=${.TARGET}.debug ${.TARGET} \
165	) || (rm -f ${.TARGET}.debug; false)
166
167_PROGDEBUG.${PROG} := ${PROG}.debug
168.endif
169
170
171.if ${SHLINKINSTALLDIR} != "/usr/libexec"
172SYMLINKS+=	${SHLINKINSTALLDIR}/${PROG} /usr/libexec/${PROG}
173.if ${MKDEBUG} != "no"
174SYMLINKS+=	${DEBUGDIR}${BINDIR}/${PROG}.debug \
175		${DEBUGDIR}/usr${BINDIR}/${PROG}.debug
176.endif
177.endif
178
179.include <bsd.prog.mk>
180.else
181
182MAN=		ld.elf_so.1
183
184.include <bsd.man.mk>
185.endif
186