libc/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 libc_DIR := $(top_srcdir)libc
   9 libc_OUT := $(top_builddir)libc
  10
  11 # Check if the target architecture has a version script for
  12 # libc, and if so, include it when linking.
  13 VERSION_SCRIPT := $(wildcard $(libc_DIR)/sysdeps/linux/$(TARGET_ARCH)/libc.map)
  14 ifneq ($(VERSION_SCRIPT),)
  15 VERSION_SCRIPT := -Wl,--version-script,$(VERSION_SCRIPT)
  16 endif
  17
  18 CFLAGS-libc :=# intentionally left blank
  19 LDFLAGS-$(UCLIBC_FORMAT_DSBT_ELF)-libc.so := -Wl,--dsbt-index=2
  20 LDFLAGS-libc.so := $(LDFLAGS) $(VERSION_SCRIPT) -Wl,-init,$(SYMBOL_PREFIX)__uClibc_init
  21 LIBS-libc.so := $(interp) $(ldso) $(top_builddir)lib/$(NONSHARED_LIBNAME)
  22
  23 # we have SHARED_LIBNAME=libc.so.$(ABI_VERSION) defined in Rules.mak
  24 libc_FULL_NAME := libuClibc-$(VERSION).so
  25
  26 # this comes first, so duplicate removal works correctly
  27 include $(libc_DIR)/sysdeps/Makefile.in
  28
  29 include $(libc_DIR)/misc/Makefile.in
  30 include $(libc_DIR)/pwd_grp/Makefile.in
  31 include $(libc_DIR)/stdio/Makefile.in
  32 include $(libc_DIR)/string/Makefile.in
  33 include $(libc_DIR)/termios/Makefile.in
  34 include $(libc_DIR)/inet/Makefile.in
  35 include $(libc_DIR)/signal/Makefile.in
  36 include $(libc_DIR)/stdlib/Makefile.in
  37 include $(libc_DIR)/unistd/Makefile.in
  38
  39 ifeq ($(DOPIC),y)
  40 libc-a-y = $(libc-y:.o=.os) $(libc-static-y:.o=.os)
  41 else
  42 libc-a-y = $(libc-y) $(libc-static-y)
  43 endif
  44
  45 ifeq ($(DOMULTI),n)
  46 libc-so-y = $(libc-y:.o=.os) $(libc-shared-y)
  47 else
  48 all_sources = $(libc-y:.o=.c)
  49 all_sources += $(libc-shared-y:.oS=.c)
  50 libc-multi-y = $(filter-out $(libc-nomulti-y:.o=.c),$(all_sources))
  51 endif
  52
  53 lib-a-y += $(top_builddir)lib/libc.a
  54 lib-gdb-y += $(top_builddir)lib/libc.gdb
  55 lib-so-y += $(libc.depend)
  56 objclean-y += CLEAN_libc
  57
  58 OUTPUT_FORMAT = $(CC) $(CFLAGS) -Wl,--verbose 2>&1 | $(SED) -n '/OUTPUT_FORMAT/,/)/p'
  59
  60 ifeq ($(DOMULTI),n)
  61 $(libc.depend): $(libc_OUT)/libc_so.a $(LIBS-libc.so)
  62         $(call link.so,$(libc_FULL_NAME),$(ABI_VERSION))
  63         # link for backward compatibility
  64         $(call link.so,$(libc_FULL_NAME),0)
  65 else
  66 $(libc.depend): $(libc_OUT)/libc.oS $(libc-nomulti-y:.o=.oS) | $(LIBS-libc.so)
  67         $(call linkm.so,$(libc_FULL_NAME),$(ABI_VERSION))
  68         # link for backward compatibility
  69         $(call linkm.so,$(libc_FULL_NAME),0)
  70 endif
  71         $(Q)$(RM) $@
  72         $(Q)cat $(top_srcdir)extra/scripts/format.lds > $@.tmp
  73         $(Q)$(OUTPUT_FORMAT) >> $@.tmp
  74 ifeq ($(COMPAT_ATEXIT),y)
  75         $(Q)echo "GROUP ( $(NONSHARED_LIBNAME) $(SHARED_LIBNAME) $(ASNEEDED) )" >> $@.tmp
  76 else
  77         $(Q)echo "GROUP ( $(SHARED_LIBNAME) $(NONSHARED_LIBNAME) $(ASNEEDED) )" >> $@.tmp
  78 endif
  79         $(Q)mv $@.tmp $@
  80
  81 $(libc_OUT)/libc_so.a: $(libc-so-y) | $(top_builddir)lib/libc.a $(top_builddir)lib/$(NONSHARED_LIBNAME)
  82         $(Q)$(RM) $@
  83 ifeq ($(DOPIC),y)
  84         $(Q)$(STRIPTOOL) $(STRIP_FLAGS) $(libc-shared-y)
  85 else
  86         $(do_strip)
  87 endif
  88         $(do_ar)
  89
  90 $(libc_OUT)/libc.oS: $(libc-multi-y) | $(top_builddir)lib/libc.a $(top_builddir)lib/$(NONSHARED_LIBNAME)
  91         $(Q)$(RM) $@
  92         $(compile-m)
  93
  94 $(top_builddir)lib/libc.a: $(libc-a-y)
  95         $(Q)$(RM) $@
  96         $(do_ar)
  97
  98 # We use libc_so.a so that we can compile the shared library with special
  99 # flags - i.e. -mleaf-id-shared-library.  The static libc.a needs to be
 100 # compiled without it.
 101 $(top_builddir)lib/libc.gdb: $(libc_OUT)/libc_so.a $(LINK_FLAT_CRTS)
 102         $(call link-flat.so,$(@:.gdb=),$(UCLIBC_SHARED_FLAT_ID))
 103
 104 CLEAN_libc:
 105         $(do_rm) $(addprefix $(libc_OUT)/*., o os oS a)