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- # Makefile for uClibc
- #
- # Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
- #
- # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- #
- subdirs += ldso/ldso/$(TARGET_ARCH)
- CFLAGS-rtld := -DNOT_IN_libc -DIS_IN_rtld $(SSP_DISABLE_FLAGS)
- ifneq ($(TARGET_ARCH),arc)
- # This stuff will not work with -fomit-frame-pointer
- CFLAGS-rtld += -fno-omit-frame-pointer
- endif
- ifeq ($(TARGET_ARCH),arm)
- # This stuff will not work with -funwind-tables / -fasynchronous-unwind-tables
- CFLAGS-rtld += -fno-unwind-tables -fno-asynchronous-unwind-tables
- endif
- CFLAGS-rtld += -I$(top_srcdir)ldso/ldso/$(TARGET_ARCH) -I$(top_srcdir)ldso/include -I$(top_srcdir)ldso/ldso
- CFLAGS-rtld += -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" -DUCLIBC_LDSO=\"$(UCLIBC_LDSO)\"
- # Not really much point in including debugging info, since gdb
- # can't really debug ldso, since gdb requires help from ldso to
- # debug things....
- # On arm, gcc-4.3.x onwards -Os emits calls to libgcc, which calls _div0,
- # which tries to call raise(). And raise comes from libc so a catch 22.
- # Using -O2 instead. We could have use -fno-early-inlining with -Os too.
- CFLAGS-$(DODEBUG)-ldso/ldso := -O2 -g
- CFLAGS-ldso.c := -DLDSO_ELFINTERP=\"$(TARGET_ARCH)/elfinterp.c\"
- # Search non-default multilib directories
- ifneq ($(MULTILIB_DIR),lib)
- CFLAGS-ldso.c += -DLDSO_MULTILIB_DIR=\"$(MULTILIB_DIR)\"
- endif
- ifeq ($(TARGET_ARCH),arc)
- CFLAGS-ldso.c += -mno-long-calls
- endif
- LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-$(UCLIBC_LDSO_NAME).so := -Wl,--dsbt-index=1
- ifneq ($(SUPPORT_LD_DEBUG),y)
- LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS)
- else
- LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS_NOSTRIP) -Wl,-z,defs
- endif
- LDFLAGS-$(UCLIBC_LDSO_NAME).so += -Wl,-e,$(SYMBOL_PREFIX)_start \
- -Wl,-z,now -Wl,-Bsymbolic \
- -Wl,--export-dynamic $(CFLAG_-Wl--sort-common) -Wl,--no-undefined
- ifneq ($(DODEBUG),y)
- LDFLAGS-$(UCLIBC_LDSO_NAME).so += -Wl,--discard-locals $(CFLAG_-Wl--discard-all)
- endif
- LDFLAGS-$(LDSO_PRELINK_SUPPORT)-$(UCLIBC_LDSO_NAME).so += -Wl,-defsym=$(SYMBOL_PREFIX)_begin=0
- ldso_FULL_NAME := $(UCLIBC_LDSO_NAME)-$(VERSION).so
- $(UCLIBC_LDSO_NAME)_DIR := $(top_srcdir)ldso/ldso
- $(UCLIBC_LDSO_NAME)_OUT := $(top_builddir)ldso/ldso
- $(UCLIBC_LDSO_NAME)_CSRC := $($(UCLIBC_LDSO_NAME)_DIR)/ldso.c
- # prerequesites
- $($(UCLIBC_LDSO_NAME)_OUT)/ldso.o $($(UCLIBC_LDSO_NAME)_OUT)/ldso.oS: \
- $($(UCLIBC_LDSO_NAME)_DIR)/dl-debug.c \
- $($(UCLIBC_LDSO_NAME)_DIR)/dl-startup.c \
- $($(UCLIBC_LDSO_NAME)_DIR)/dl-array.c \
- $($(UCLIBC_LDSO_NAME)_DIR)/dl-hash.c \
- $($(UCLIBC_LDSO_NAME)_DIR)/dl-elf.c
- $(UCLIBC_LDSO_NAME)_COBJ := $(patsubst $($(UCLIBC_LDSO_NAME)_DIR)/%.c,$($(UCLIBC_LDSO_NAME)_OUT)/%.o,$($(UCLIBC_LDSO_NAME)_CSRC))
- $(UCLIBC_LDSO_NAME)_SSRC := $(wildcard $($(UCLIBC_LDSO_NAME)_DIR)/$(TARGET_ARCH)/*.S)
- $(UCLIBC_LDSO_NAME)_SOBJ := $(patsubst $($(UCLIBC_LDSO_NAME)_DIR)/$(TARGET_ARCH)/%.S,$($(UCLIBC_LDSO_NAME)_OUT)/$(TARGET_ARCH)/%.o,$($(UCLIBC_LDSO_NAME)_SSRC))
- $(UCLIBC_LDSO_NAME)_OBJS := $($(UCLIBC_LDSO_NAME)_COBJ) $($(UCLIBC_LDSO_NAME)_SOBJ)
- ldso-y := $($(UCLIBC_LDSO_NAME)_OBJS:.o=.oS)
- lib-so-y += $(ldso)
- objclean-y += CLEAN_ldso/ldso
- $(ldso): $(ldso:.$(ABI_VERSION)=)
- $(ldso:.$(ABI_VERSION)=): | $(top_builddir)lib
- $(ldso:.$(ABI_VERSION)=): $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a
- $(call link.so,$(ldso_FULL_NAME),$(ABI_VERSION))
- # link for backward compatibility
- (cd $(top_builddir)lib; ln -sf $(UCLIBC_LDSO_NAME).so.$(ABI_VERSION) $(UCLIBC_LDSO_NAME).so.0 )
- ifeq ($(CONFIG_MIPS_NAN_2008),y)
- (cd $(top_builddir)lib; ln -sf $(UCLIBC_LDSO_NAME).so.$(ABI_VERSION) $(UCLIBC_LDSO_NAME)-mipsn8.so.0)
- endif
- $($(UCLIBC_LDSO_NAME)_OUT)/$(UCLIBC_LDSO_NAME)_so.a: $(ldso-y)
- $(Q)$(RM) $@
- $(do_ar)
- CLEAN_ldso/ldso:
- $(do_rm) $(addprefix $($(UCLIBC_LDSO_NAME)_OUT)/,$(foreach e, o os oS a,$(foreach d, *. */*.,$(d)$(e))))
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