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