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