libexec/rtld-elf/Makefile

   1 # $FreeBSD$
   2
   3 # Use the following command to build local debug version of dynamic
   4 # linker:
   5 # make DEBUG_FLAGS=-g WITHOUT_TESTS=yes all
   6
   7 .include <src.opts.mk>
   8 PACKAGE=        clibs
   9 MK_PIE=         no # Always position independent using local rules
  10 MK_SSP=         no
  11
  12 CONFS=          libmap.conf
  13 PROG?=          ld-elf.so.1
  14 .if (${PROG:M*ld-elf32*} != "")
  15 TAGS+=          lib32
  16 .endif
  17 SRCS= \
  18         rtld_start.S \
  19         reloc.c \
  20         rtld.c \
  21         rtld_lock.c \
  22         rtld_malloc.c \
  23         rtld_printf.c \
  24         map_object.c \
  25         xmalloc.c \
  26         debug.c \
  27         libmap.c
  28 MAN=            rtld.1
  29 CSTD?=          gnu99
  30 CFLAGS+=        -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
  31 CFLAGS+=        -I${SRCTOP}/lib/csu/common
  32 .if exists(${.CURDIR}/${MACHINE_ARCH})
  33 RTLD_ARCH=      ${MACHINE_ARCH}
  34 .else
  35 RTLD_ARCH=      ${MACHINE_CPUARCH}
  36 .endif
  37 CFLAGS+=        -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR}
  38 .if ${MACHINE_ARCH} == "powerpc64"
  39 LDFLAGS+=       -nostdlib -e _rtld_start
  40 .else
  41 LDFLAGS+=       -nostdlib -e .rtld_start
  42 .endif
  43
  44 NO_WCAST_ALIGN= yes
  45 WARNS?=         6
  46 INSTALLFLAGS=   -C -b
  47 PRECIOUSPROG=
  48 BINDIR=         /libexec
  49 SYMLINKS=       ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
  50 MLINKS=         rtld.1 ld-elf.so.1.1 \
  51                 rtld.1 ld.so.1
  52
  53 .if ${MACHINE_CPUARCH} == "sparc64"
  54 CFLAGS+=        -fPIC
  55 .else
  56 CFLAGS+=        -fpic
  57 .endif
  58 CFLAGS+=        -DPIC $(DEBUG)
  59 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
  60 CFLAGS+=        -fvisibility=hidden
  61 .endif
  62 .if ${MACHINE_CPUARCH} == "mips"
  63 CFLAGS.reloc.c+=-fno-jump-tables
  64 .endif
  65 LDFLAGS+=       -shared -Wl,-Bsymbolic -Wl,-z,defs
  66 LIBADD=         c_nossp_pic
  67 .if ${MK_TOOLCHAIN} == "no"
  68 LDFLAGS+=       -L${LIBCDIR}
  69 .endif
  70
  71 .if ${MACHINE_CPUARCH} == "arm"
  72 # Some of the required math functions (div & mod) are implemented in
  73 # libcompiler_rt on ARM. The library also needs to be placed first to be
  74 # correctly linked. As some of the functions are used before we have
  75 # shared libraries.
  76 LIBADD+=        compiler_rt
  77 .endif
  78
  79
  80
  81 .if ${MK_SYMVER} == "yes"
  82 VERSION_DEF=    ${LIBCSRCDIR}/Versions.def
  83 SYMBOL_MAPS=    ${.CURDIR}/Symbol.map
  84 VERSION_MAP=    Version.map
  85 LDFLAGS+=       -Wl,--version-script=${VERSION_MAP}
  86
  87 .if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map)
  88 SYMBOL_MAPS+=   ${.CURDIR}/${RTLD_ARCH}/Symbol.map
  89 .endif
  90 .endif
  91
  92 .sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc"
  93
  94 # Since moving rtld-elf to /libexec, we need to create a symlink.
  95 # Fixup the existing binary that's there so we can symlink over it.
  96 beforeinstall:
  97 .if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no"
  98         -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG}
  99 .endif
 100
 101 .PATH: ${.CURDIR}/${RTLD_ARCH}
 102
 103 HAS_TESTS=
 104 SUBDIR.${MK_TESTS}+= tests
 105
 106 .include <bsd.prog.mk>
 107 ${PROG_FULL}:   ${VERSION_MAP}
 108 .include <bsd.symver.mk>
 109
 110 .if ${COMPILER_TYPE} == "gcc"
 111 # GCC warns about redeclarations even though they have __exported
 112 # and are therefore not identical to the ones from the system headers.
 113 CFLAGS+=        -Wno-redundant-decls
 114 .if ${COMPILER_VERSION} < 40300
 115 # Silence -Wshadow false positives in ancient GCC
 116 CFLAGS+=        -Wno-shadow
 117 .endif
 118 .endif