ldso/ldso/Makefile.in

   1 # Makefile for uClibc
   2 #
   3 # Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
   4 #
   5 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6 #
   7
   8 subdirs += ldso/ldso/$(TARGET_ARCH)
   9
  10 CFLAGS-ldso := -DNOT_IN_libc -DIS_IN_rtld $(SSP_DISABLE_FLAGS)
  11
  12 ifneq ($(TARGET_ARCH),arc)
  13 # This stuff will not work with -fomit-frame-pointer
  14 CFLAGS-ldso += -fno-omit-frame-pointer
  15 endif
  16
  17 CFLAGS-ldso += -I$(top_srcdir)ldso/ldso/$(TARGET_ARCH) -I$(top_srcdir)ldso/include -I$(top_srcdir)ldso/ldso
  18 CFLAGS-ldso += -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" -DUCLIBC_LDSO=\"$(UCLIBC_LDSO)\"
  19
  20 ifeq ($(DODEBUG),y)
  21 # Not really much point in including debugging info, since gdb
  22 # can't really debug ldso, since gdb requires help from ldso to
  23 # debug things....
  24 # On arm, gcc-4.3.x onwards -Os emits calls to libgcc, which calls _div0,
  25 # which tries to call raise(). And raise comes from libc so a catch 22.
  26 # Using -O2 instead. We could have use -fno-early-inlining with -Os too.
  27
  28 CFLAGS-ldso += -O2 -g
  29 endif
  30
  31 CFLAGS-ldso/ldso/$(TARGET_ARCH)/ := $(CFLAGS-ldso)
  32
  33 CFLAGS-ldso.c := -DLDSO_ELFINTERP=\"$(TARGET_ARCH)/elfinterp.c\" $(CFLAGS-ldso)
  34
  35 LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-$(UCLIBC_LDSO_NAME).so := -Wl,--dsbt-index=1
  36 ifneq ($(SUPPORT_LD_DEBUG),y)
  37 LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS)
  38 else
  39 LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS_NOSTRIP) -Wl,-z,defs
  40 endif
  41 LDFLAGS-$(UCLIBC_LDSO_NAME).so += -Wl,-e,$(SYMBOL_PREFIX)_start -Wl,-z,now -Wl,-Bsymbolic \
  42         -Wl,--export-dynamic $(CFLAG_-Wl--sort-common) -Wl,--discard-locals \
  43         $(CFLAG_-Wl--discard-all) -Wl,--no-undefined
  44
  45 ldso_FULL_NAME := $(UCLIBC_LDSO_NAME)-$(VERSION).so
  46
  47 $(UCLIBC_LDSO_NAME)_DIR := $(top_srcdir)ldso/ldso
  48 $(UCLIBC_LDSO_NAME)_OUT := $(top_builddir)ldso/ldso
  49
  50 $(UCLIBC_LDSO_NAME)_CSRC := $($(UCLIBC_LDSO_NAME)_DIR)/ldso.c
  51 # prerequesites
  52 $($(UCLIBC_LDSO_NAME)_OUT)/ldso.o $($(UCLIBC_LDSO_NAME)_OUT)/ldso.oS: \
  53         $($(UCLIBC_LDSO_NAME)_DIR)/dl-debug.c \
  54         $($(UCLIBC_LDSO_NAME)_DIR)/dl-startup.c \
  55         $($(UCLIBC_LDSO_NAME)_DIR)/dl-array.c \
  56         $($(UCLIBC_LDSO_NAME)_DIR)/dl-hash.c \
  57         $($(UCLIBC_LDSO_NAME)_DIR)/dl-elf.c
  58 $(UCLIBC_LDSO_NAME)_COBJ := $(patsubst $($(UCLIBC_LDSO_NAME)_DIR)/%.c,$($(UCLIBC_LDSO_NAME)_OUT)/%.o,$($(UCLIBC_LDSO_NAME)_CSRC))
  59
  60 $(UCLIBC_LDSO_NAME)_SSRC := $(wildcard $($(UCLIBC_LDSO_NAME)_DIR)/$(TARGET_ARCH)/*.S)
  61 $(UCLIBC_LDSO_NAME)_SOBJ := $(patsubst $($(UCLIBC_LDSO_NAME)_DIR)/$(TARGET_ARCH)/%.S,$($(UCLIBC_LDSO_NAME)_OUT)/$(TARGET_ARCH)/%.o,$($(UCLIBC_LDSO_NAME)_SSRC))
  62
  63 $(UCLIBC_LDSO_NAME)_OBJS := $($(UCLIBC_LDSO_NAME)_COBJ) $($(UCLIBC_LDSO_NAME)_SOBJ)
  64
  65 ldso-y := $($(UCLIBC_LDSO_NAME)_OBJS:.o=.oS)
  66
  67 lib-so-y += $(ldso)
  68 objclean-y += CLEAN_ldso/ldso
  69
  70 ifeq ($(LDSO_PRELINK_SUPPORT),y)
  71 # Use a specific linker script for ld.so
  72 LDFLAGS-$(UCLIBC_LDSO_NAME).so += -T $(ldso:.$(ABI_VERSION)=).lds
  73 endif
  74
  75 $(ldso): $(ldso:.$(ABI_VERSION)=)
  76 $(ldso:.$(ABI_VERSION)=): $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a
  77 ifeq ($(LDSO_PRELINK_SUPPORT),y)
  78         $(call create-lds)
  79 endif
  80         $(call link.so,$(ldso_FULL_NAME),$(ABI_VERSION))
  81
  82 $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a: $(ldso-y)
  83         $(Q)$(RM) $@
  84         $(do_ar)
  85
  86 CLEAN_ldso/ldso:
  87         $(do_rm) $(addprefix $($(UCLIBC_LDSO_NAME)_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*.,$(d)$(e))))