# 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. # libc_DIR := $(top_srcdir)libc libc_OUT := $(top_builddir)libc # Check if the target architecture has a version script for # libc, and if so, include it when linking. VERSION_SCRIPT := $(wildcard $(libc_DIR)/sysdeps/linux/$(TARGET_ARCH)/libc.map) ifneq ($(VERSION_SCRIPT),) VERSION_SCRIPT := -Wl,--version-script,$(VERSION_SCRIPT) endif LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-libc.so := -Wl,--dsbt-index=2 LDFLAGS-libc.so := $(LDFLAGS) $(VERSION_SCRIPT) -Wl,-init,$(SYMBOL_PREFIX)__uClibc_init ifeq ($(UCLIBC_HAS_STDIO_FUTEXES),y) CFLAGS += -D__USE_STDIO_FUTEXES__ endif LIBS-libc.so := $(interp) $(ldso) $(top_builddir)lib/$(NONSHARED_LIBNAME) # we have SHARED_LIBNAME=libc.so.$(ABI_VERSION) defined in Rules.mak libc_FULL_NAME := libuClibc-$(VERSION).so # this comes first, so duplicate removal works correctly include $(libc_DIR)/sysdeps/Makefile.in include $(libc_DIR)/misc/Makefile.in include $(libc_DIR)/pwd_grp/Makefile.in include $(libc_DIR)/stdio/Makefile.in include $(libc_DIR)/string/Makefile.in include $(libc_DIR)/termios/Makefile.in include $(libc_DIR)/inet/Makefile.in include $(libc_DIR)/signal/Makefile.in include $(libc_DIR)/stdlib/Makefile.in include $(libc_DIR)/unistd/Makefile.in ifeq ($(DOPIC),y) libc-a-y = $(libc-y:.o=.os) $(libc-static-y:.o=.os) else libc-a-y = $(libc-y) $(libc-static-y) endif ifeq ($(DOMULTI),n) libc-so-y = $(libc-y:.o=.os) $(libc-shared-y) else all_sources = $(libc-y:.o=.c) all_sources += $(libc-shared-y:.oS=.c) libc-multi-y = $(filter-out $(libc-nomulti-y:.o=.c),$(all_sources)) endif lib-a-y += $(top_builddir)lib/libc.a lib-gdb-y += $(top_builddir)lib/libc.gdb lib-so-y += $(libc.depend) objclean-y += CLEAN_libc OUTPUT_FORMAT = $(CC) $(CFLAGS) -Wl,--verbose 2>&1 | $(SED) -n '/OUTPUT_FORMAT/,/)/p' ifeq ($(DOMULTI),n) $(libc.depend): $(libc_OUT)/libc_so.a $(LIBS-libc.so) $(call link.so,$(libc_FULL_NAME),$(ABI_VERSION)) else $(libc.depend): $(libc_OUT)/libc.oS $(libc-nomulti-y:.o=.oS) | $(LIBS-libc.so) $(call linkm.so,$(libc_FULL_NAME),$(ABI_VERSION)) endif $(Q)$(RM) $@ $(Q)cat $(top_srcdir)extra/scripts/format.lds > $@.tmp $(Q)$(OUTPUT_FORMAT) >> $@.tmp ifeq ($(COMPAT_ATEXIT),y) $(Q)echo "GROUP ( $(NONSHARED_LIBNAME) $(SHARED_LIBNAME) $(ASNEEDED) )" >> $@.tmp else $(Q)echo "GROUP ( $(SHARED_LIBNAME) $(NONSHARED_LIBNAME) $(ASNEEDED) )" >> $@.tmp endif $(Q)echo "$(UBACKTRACE_ASNEEDED)" >> $@.tmp $(Q)mv $@.tmp $@ $(libc_OUT)/libc_so.a: $(libc-so-y) | $(top_builddir)lib/libc.a $(top_builddir)lib/$(NONSHARED_LIBNAME) $(Q)$(RM) $@ ifeq ($(DOPIC),y) $(Q)$(STRIPTOOL) $(STRIP_FLAGS) $(libc-shared-y) else $(do_strip) endif $(do_ar) $(libc_OUT)/libc.oS: $(libc-multi-y) | $(top_builddir)lib/libc.a $(top_builddir)lib/$(NONSHARED_LIBNAME) $(Q)$(RM) $@ $(compile-m) $(top_builddir)lib/libc.a: $(libc-a-y) | $(crt-y) $(Q)$(INSTALL) -d $(dir $@) $(Q)$(RM) $@ $(do_ar) # We use libc_so.a so that we can compile the shared library with special # flags - i.e. -mleaf-id-shared-library. The static libc.a needs to be # compiled without it. $(top_builddir)lib/libc.gdb: $(libc_OUT)/libc_so.a $(LINK_FLAT_CRTS) $(call link-flat.so,$(@:.gdb=),$(UCLIBC_SHARED_FLAT_ID)) CLEAN_libc: $(do_rm) $(addprefix $(libc_OUT)/*., o os oS a)