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 RTLD_ELF_DIR:=  ${.PARSEDIR}
   8
   9 .include <src.opts.mk>
  10 PACKAGE=        clibs
  11 MK_PIE=         no # Always position independent using local rules
  12 MK_SSP=         no
  13
  14 CONFS=          libmap.conf
  15 PROG?=          ld-elf.so.1
  16 .if (${PROG:M*ld-elf32*} != "")
  17 TAGS+=          lib32
  18 .endif
  19 SRCS= \
  20         rtld_start.S \
  21         reloc.c \
  22         rtld.c \
  23         rtld_lock.c \
  24         rtld_malloc.c \
  25         rtld_printf.c \
  26         map_object.c \
  27         xmalloc.c \
  28         debug.c \
  29         libmap.c
  30 MAN?=           rtld.1
  31 CSTD?=          gnu99
  32 CFLAGS+=        -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
  33 CFLAGS+=        -I${SRCTOP}/lib/csu/common
  34 .if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH})
  35 RTLD_ARCH=      ${MACHINE_ARCH}
  36 .else
  37 RTLD_ARCH=      ${MACHINE_CPUARCH}
  38 .endif
  39 CFLAGS+=        -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
  40
  41 NO_WCAST_ALIGN= yes
  42 WARNS?=         6
  43 INSTALLFLAGS=   -C -b
  44 PRECIOUSPROG=
  45 BINDIR=         /libexec
  46 SYMLINKS=       ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
  47 MLINKS?=        rtld.1 ld-elf.so.1.1 \
  48                 rtld.1 ld.so.1
  49
  50 CFLAGS+=        -fpic -DPIC $(DEBUG)
  51 LDFLAGS+=       -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY}
  52 # Pull in the dependencies that we use from libc
  53 .include "rtld-libc/Makefile.inc"
  54 .if ${MK_TOOLCHAIN} == "no"
  55 LDFLAGS+=       -L${LIBCDIR}
  56 .endif
  57
  58 VERSION_DEF=    ${LIBCSRCDIR}/Versions.def
  59 SYMBOL_MAPS=    ${RTLD_ELF_DIR}/Symbol.map
  60 VERSION_MAP=    Version.map
  61 LDFLAGS+=       -Wl,--version-script=${VERSION_MAP}
  62
  63 .if exists(${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map)
  64 SYMBOL_MAPS+=   ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map
  65 .endif
  66
  67 .sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc"
  68 RTLD_ENTRY?=    .rtld_start
  69
  70 # Since moving rtld-elf to /libexec, we need to create a symlink.
  71 # Fixup the existing binary that's there so we can symlink over it.
  72 beforeinstall:
  73 .if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no"
  74         -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG}
  75 .endif
  76
  77 .PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH}
  78
  79 .if ${.CURDIR} == ${RTLD_ELF_DIR}
  80 HAS_TESTS=
  81 SUBDIR.${MK_TESTS}+= tests
  82 .endif
  83
  84 .include <bsd.prog.mk>
  85 ${PROG_FULL}:   ${VERSION_MAP}
  86 .include <bsd.symver.mk>
  87
  88 .if ${COMPILER_TYPE} == "gcc"
  89 # GCC warns about redeclarations even though they have __exported
  90 # and are therefore not identical to the ones from the system headers.
  91 CFLAGS+=        -Wno-redundant-decls
  92 .if ${COMPILER_VERSION} < 40300
  93 # Silence -Wshadow false positives in ancient GCC
  94 CFLAGS+=        -Wno-shadow
  95 .endif
  96 .endif