Makefile revision 1.136 
1#	$NetBSD: Makefile,v 1.136 2016/12/01 14:29:15 christos Exp $
2#
3# NOTE: when changing ld.so, ensure that ldd still compiles.
4#
5
6WARNS?=4
7
8LDELFSO_MACHINE_ARCH?= ${MACHINE_ARCH}
9
10# This needs to be before bsd.init.mk
11.if defined(BSD_MK_COMPAT_FILE)
12.include <${BSD_MK_COMPAT_FILE}>
13.endif
14
15# We are not building this with PIE
16PIE_CFLAGS=
17PIE_LDFLAGS=
18.include <bsd.init.mk>			# for MKPIC definition
19.include <bsd.shlib.mk>			# for SHLINKINSTALLDIR definition
20
21.if defined(LDELFSO_MACHINE_CPU) && !empty(LDELFSO_MACHINE_CPU) && \
22    exists(${.CURDIR}/arch/${LDELFSO_MACHINE_CPU})
23ARCHSUBDIR=	${LDELFSO_MACHINE_CPU}
24.else
25ARCHSUBDIR=	${MACHINE_CPU}
26.endif
27M=		${.CURDIR}/arch/${ARCHSUBDIR}
28
29.if ((${MACHINE_CPU} == "aarch64") ||					\
30     (${LDELFSO_MACHINE_ARCH} == "alpha") ||				\
31     (${MACHINE_CPU} == "arm") ||					\
32     (${LDELFSO_MACHINE_ARCH} == "coldfire") ||				\
33     (${LDELFSO_MACHINE_ARCH} == "hppa") ||				\
34     (${LDELFSO_MACHINE_ARCH} == "i386") ||				\
35     (${LDELFSO_MACHINE_ARCH} == "m68k") ||				\
36     (${MACHINE_CPU} == "mips") ||					\
37     (${MACHINE_CPU} == "or1k") ||					\
38     (${MACHINE_CPU} == "powerpc") ||					\
39     (${MACHINE_CPU} == "riscv") ||					\
40     (${MACHINE_CPU} == "sh3") ||					\
41     (${LDELFSO_MACHINE_ARCH} == "sparc") ||				\
42     (${LDELFSO_MACHINE_ARCH} == "sparc64") ||				\
43     (${LDELFSO_MACHINE_ARCH} == "x86_64") ||				\
44     (${LDELFSO_MACHINE_ARCH} == "vax")) &&				\
45    ${MKPIC} != "no"
46
47LDFLAGS+=	${${ACTIVE_CC} == "clang":? -Wl,-Bsymbolic : -symbolic} \
48		-shared -nostartfiles -nodefaultlibs
49LDFLAGS+=	-Wl,-static
50LDFLAGS+=	-Wl,--warn-shared-textrel
51LDFLAGS+=	-Wl,-Map=${.TARGET}.map
52
53COPTS+=		-fvisibility=hidden
54
55# Adds SRCS, CPPFLAGS, LDFLAGS, etc.  Must go first so MD startup source
56# is first.
57.if exists($M/Makefile.inc)
58.include "$M/Makefile.inc"
59.endif
60
61# Support compat ld.elf_so.
62.if defined(MLIBDIR)
63PROG=		ld.elf_so-${MLIBDIR}
64CPPFLAGS+=	-DRTLD_ARCH_SUBDIR=\"${MLIBDIR}\"
65.	if ${MLIBDIR} == "o32"
66.	endif
67.else
68PROG=		ld.elf_so
69.endif
70
71CLIBOBJ!=	cd ${NETBSDSRCDIR}/lib/libc && ${PRINTOBJDIR}
72
73SRCS+=		rtld.c reloc.c symbol.c xmalloc.c xprintf.c debug.c \
74		map_object.c load.c search.c headers.c paths.c expand.c \
75		tls.c symver.c diagassert.c
76
77.if ${USE_FORT} == "yes"
78.PATH.c: ${NETBSDSRCDIR}/lib/libc/misc
79SRCS+=		stack_protector.c
80.endif
81
82.PATH.c: ${NETBSDSRCDIR}/lib/libc/stdlib
83SRCS+=		exit.c
84
85errlist_concat.h: ${NETBSDSRCDIR}/lib/libc/gen/errlist.awk ${NETBSDSRCDIR}/sys/sys/errno.h
86	${TOOL_AWK} -v concat=1 -f ${.ALLSRC} > ${.TARGET}.tmp && \
87	mv -f ${.TARGET}.tmp ${.TARGET}
88
89xprintf.c: errlist_concat.h
90
91CLEANFILES+=	errlist_concat.h ${PROG}.map
92
93BINDIR=		${SHLINKINSTALLDIR}
94
95CPPFLAGS+=	-DLIBDIR=\"${LIBDIR}\" -D_PATH_RTLD=\"${BINDIR}/${PROG}\"
96CPPFLAGS+=	-I${.CURDIR} -I. -D_KERNTYPES
97CPPFLAGS+=	-DRTLD_LOADER
98CPPFLAGS+=	-DGNU_RELRO
99CPPFLAGS+=	-D_RTLD_SOURCE
100CPPFLAGS+=	-DCOMBRELOC
101#CPPFLAGS+=	-DDEBUG
102#CPPFLAGS+=	-DRTLD_DEBUG
103#CPPFLAGS+=	-DRTLD_DEBUG_RELOC
104.if !empty(LDELFSO_MACHINE_ARCH:Mearm*)
105CPPFLAGS+=	-I${NETBSDSRCDIR}/lib/libexecinfo
106.endif
107#DBG=		-g
108COPTS+=		-O3
109
110.if ${MACHINE_CPU} != "m68k" && ${MACHINE_CPU} != "sh3" && ${MACHINE_ARCH} != "vax"
111COPTS+=		-fomit-frame-pointer
112.endif
113
114.if ${LDELFSO_MACHINE_ARCH} == "i386" || ${LDELFSO_MACHINE_ARCH} == "x86_64"
115COPTS+=		-mno-3dnow -mno-mmx -mno-sse -mno-sse2 -mno-sse3
116.endif
117
118
119.if ${SHLIBDIR} != ${LIBDIR}
120CPPFLAGS+=	-DRTLD_DEFAULT_LIBRARY_PATH=\"${SHLIBDIR}:${LIBDIR}\"
121.endif
122
123# rtld.c and symbol.c use alloca, so disable SSP warnings.
124COPTS.rtld.c+=	-Wno-stack-protector
125COPTS.symbol.c+=-Wno-stack-protector
126
127LDADD+=		-Wl,--version-script=${.CURDIR}/symbols.map
128LDADD+=		-L${CLIBOBJ} -L${DESTDIR}${LIBDIR}
129.if ${MKPICLIB} != "no"
130LDADD+=		-lc_pic
131.if ${MKPICINSTALL} != "no"
132DPADD+=		${LIBC_PIC}
133.endif
134DPADD+=		${CLIBOBJ}/libc_pic.a
135.else
136LDADD+=		-lc
137DPADD+=		${CLIBOBJ}/libc.a
138.endif
139
140.if ${MACHINE_CPU} == "hppa" || ${MACHINE_CPU} == "sh3"
141# for $$divU, $$remU etc. (millicode)
142LDADD+=		-lgcc
143DPADD+=		${LIBGCC}
144.endif
145
146STRIPFLAG=
147
148.PATH: $M
149
150
151${PROG}: ${OBJS} ${DPADD}
152	${_MKMSG_LINK} ${PROG}
153	${CC} ${LDFLAGS} -o ${PROG} ${OBJS} ${LDADD}
154.if ${MKDEBUG} != "no"
155	(  ${OBJCOPY} --only-keep-debug ${.TARGET} ${.TARGET}.debug \
156	   && ${OBJCOPY} --strip-debug -p -R .gnu_debuglink \
157	   --add-gnu-debuglink=${.TARGET}.debug ${.TARGET} \
158	) || (rm -f ${.TARGET}.debug; false)
159
160_PROGDEBUG.${PROG} := ${PROG}.debug
161.endif
162
163
164.if ${SHLINKINSTALLDIR} != "/usr/libexec"
165SYMLINKS+=	${SHLINKINSTALLDIR}/${PROG} /usr/libexec/${PROG}
166.if ${MKDEBUG} != "no"
167SYMLINKS+=	${DEBUGDIR}${BINDIR}/${PROG}.debug \
168		${DEBUGDIR}/usr${BINDIR}/${PROG}.debug
169.endif
170.endif
171
172.include <bsd.prog.mk>
173.else
174
175MAN=		ld.elf_so.1
176
177.include <bsd.man.mk>
178.endif
179