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Makefile revision 1.139 
      1 #	$NetBSD: Makefile,v 1.139 2018/10/17 23:36:58 joerg Exp $
      2 #
      3 # NOTE: when changing ld.so, ensure that ldd still compiles.
      4 #
      5 NOSANITIZER=	# defined
      6 WARNS?=4
      7 
      8 LDELFSO_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
     16 PIE_CFLAGS=
     17 PIE_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})
     23 ARCHSUBDIR=	${LDELFSO_MACHINE_CPU}
     24 .else
     25 ARCHSUBDIR=	${MACHINE_CPU}
     26 .endif
     27 M=		${.CURDIR}/arch/${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 
     47 LDFLAGS+=	${${ACTIVE_CC} == "clang":? -Wl,-Bsymbolic : -symbolic} \
     48 		-shared -nostartfiles -nodefaultlibs
     49 LDFLAGS+=	-Wl,-static
     50 LDFLAGS+=	-Wl,--warn-shared-textrel
     51 LDFLAGS+=	-Wl,-Map=${.TARGET}.map
     52 
     53 COPTS+=		-fvisibility=hidden
     54 
     55 # Adds SRCS, CPPFLAGS, LDFLAGS, etc.  Must go first so MD startup source
     56 # is first.
     57 .if exists($M/Makefile.inc)
     58 .include "$M/Makefile.inc"
     59 .endif
     60 
     61 # Support compat ld.elf_so.
     62 .if defined(MLIBDIR)
     63 PROG=		ld.elf_so-${MLIBDIR}
     64 CPPFLAGS+=	-DRTLD_ARCH_SUBDIR=\"${MLIBDIR}\"
     65 .	if ${MLIBDIR} == "o32"
     66 .	endif
     67 .else
     68 PROG=		ld.elf_so
     69 .endif
     70 
     71 CLIBOBJ!=	cd ${NETBSDSRCDIR}/lib/libc && ${PRINTOBJDIR}
     72 
     73 SRCS+=		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 compat.c
     76 
     77 .if ${USE_FORT} == "yes"
     78 .PATH.c: ${NETBSDSRCDIR}/lib/libc/misc
     79 SRCS+=		stack_protector.c
     80 .endif
     81 
     82 .PATH.c: ${NETBSDSRCDIR}/lib/libc/stdlib
     83 SRCS+=		exit.c
     84 
     85 errlist_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 
     89 xprintf.c: errlist_concat.h
     90 
     91 CLEANFILES+=	errlist_concat.h ${PROG}.map
     92 
     93 BINDIR=		${SHLINKINSTALLDIR}
     94 
     95 CPPFLAGS+=	-DLIBDIR=\"${LIBDIR}\" -D_PATH_RTLD=\"${BINDIR}/${PROG}\"
     96 CPPFLAGS+=	-I${.CURDIR} -I. -D_KERNTYPES
     97 CPPFLAGS+=	-DRTLD_LOADER
     98 CPPFLAGS+=	-DGNU_RELRO
     99 CPPFLAGS+=	-D_RTLD_SOURCE
    100 #CPPFLAGS+=	-DDEBUG
    101 #CPPFLAGS+=	-DRTLD_DEBUG
    102 #CPPFLAGS+=	-DRTLD_DEBUG_RELOC
    103 .if !empty(LDELFSO_MACHINE_ARCH:Mearm*)
    104 CPPFLAGS+=	-I${NETBSDSRCDIR}/lib/libexecinfo
    105 .endif
    106 #DBG=		-g
    107 COPTS+=		-O3
    108 
    109 .if ${MACHINE_CPU} != "m68k" && ${MACHINE_CPU} != "sh3" && ${MACHINE_ARCH} != "vax"
    110 COPTS+=		-fomit-frame-pointer
    111 .endif
    112 
    113 .if ${LDELFSO_MACHINE_ARCH} == "i386" || ${LDELFSO_MACHINE_ARCH} == "x86_64"
    114 COPTS+=		-mno-3dnow -mno-mmx -mno-sse -mno-sse2 -mno-sse3
    115 .endif
    116 
    117 
    118 .if ${SHLIBDIR} != ${LIBDIR}
    119 CPPFLAGS+=	-DRTLD_DEFAULT_LIBRARY_PATH=\"${SHLIBDIR}:${LIBDIR}\"
    120 .endif
    121 
    122 # rtld.c and symbol.c use alloca, so disable SSP warnings.
    123 COPTS.rtld.c+=	-Wno-stack-protector
    124 COPTS.symbol.c+=-Wno-stack-protector
    125 
    126 LDADD+=		-Wl,--version-script=${.CURDIR}/symbols.map
    127 LDADD+=		-L${CLIBOBJ} -L${DESTDIR}${LIBDIR}
    128 .if ${MKPICLIB} != "no"
    129 LDADD+=		-lc_pic
    130 .if ${MKPICINSTALL} != "no"
    131 DPADD+=		${LIBC_PIC}
    132 .endif
    133 DPADD+=		${CLIBOBJ}/libc_pic.a
    134 .else
    135 LDADD+=		-lc
    136 DPADD+=		${CLIBOBJ}/libc.a
    137 .endif
    138 
    139 .if ${MACHINE_CPU} == "hppa" || ${MACHINE_CPU} == "sh3"
    140 # for $$divU, $$remU etc. (millicode)
    141 LDADD+=		-lgcc
    142 DPADD+=		${LIBGCC}
    143 .endif
    144 
    145 STRIPFLAG=
    146 
    147 .PATH: $M
    148 
    149 
    150 ${PROG}: ${OBJS} ${DPADD}
    151 	${_MKMSG_LINK} ${PROG}
    152 	${CC} ${LDFLAGS} -o ${PROG} ${OBJS} ${LDADD}
    153 .if ${MKDEBUG} != "no"
    154 	(  ${OBJCOPY} --only-keep-debug ${.TARGET} ${.TARGET}.debug \
    155 	   && ${OBJCOPY} --strip-debug -p -R .gnu_debuglink \
    156 	   --add-gnu-debuglink=${.TARGET}.debug ${.TARGET} \
    157 	) || (rm -f ${.TARGET}.debug; false)
    158 
    159 _PROGDEBUG.${PROG} := ${PROG}.debug
    160 .endif
    161 
    162 
    163 .if ${SHLINKINSTALLDIR} != "/usr/libexec"
    164 SYMLINKS+=	${SHLINKINSTALLDIR}/${PROG} /usr/libexec/${PROG}
    165 .if ${MKDEBUG} != "no"
    166 SYMLINKS+=	${DEBUGDIR}${BINDIR}/${PROG}.debug \
    167 		${DEBUGDIR}/usr${BINDIR}/${PROG}.debug
    168 .endif
    169 .endif
    170 
    171 .include <bsd.prog.mk>
    172 .else
    173 
    174 MAN=		ld.elf_so.1
    175 
    176 .include <bsd.man.mk>
    177 .endif
    178