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