Makefile 4.6 KB

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  1. # Makefile for uClibc
  2. #
  3. # Copyright (C) 2000 by Lineo, inc.
  4. # Copyright (C) 2000,2001 Erik Andersen <andersen@uclibc.org>
  5. #
  6. # This program is free software; you can redistribute it and/or modify it under
  7. # the terms of the GNU Library General Public License as published by the Free
  8. # Software Foundation; either version 2 of the License, or (at your option) any
  9. # later version.
  10. #
  11. # This program is distributed in the hope that it will be useful, but WITHOUT
  12. # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13. # FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
  14. # details.
  15. #
  16. # You should have received a copy of the GNU Library General Public License
  17. # along with this program; if not, write to the Free Software Foundation, Inc.,
  18. # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. #
  20. # Derived in part from the Linux-8086 C library, the GNU C Library, and several
  21. # other sundry sources. Files within this library are copyright by their
  22. # respective copyright holders.
  23. #--------------------------------------------------------
  24. #
  25. #There are a number of configurable options in "Config"
  26. #
  27. #--------------------------------------------------------
  28. TOPDIR=../
  29. include $(TOPDIR)Rules.mak
  30. DIRS = misc pwd_grp stdio string termios inet signal stdlib sysdeps unistd
  31. # Check if the target architecture has a version script for
  32. # libc, and if so, include it when linking.
  33. VERSION_SCRIPT:=${shell if [ -f sysdeps/linux/$(TARGET_ARCH)/libc.map ] ; then \
  34. echo "--version-script sysdeps/linux/$(TARGET_ARCH)/libc.map"; fi}
  35. # we have SHARED_MAJORNAME=libc.so.$(MAJOR_VERSION) defined in Rules.mak
  36. LIB_NAME := libc
  37. AR_LIB_NAME := $(TOPDIR)lib/$(LIB_NAME).a
  38. SO_LIB_NAME = $(TOPDIR)lib/$(LIB_NAME).so
  39. SO_FULL_NAME = libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
  40. ifeq ($(strip $(HAVE_SHARED)),y)
  41. all: $(SO_LIB_NAME)
  42. else
  43. all: $(AR_LIB_NAME)
  44. endif
  45. # Some functions are duplicated across subdirs, and when you pass $(AR)
  46. # the same object file more than once, it'll add it to the archive multiple
  47. # times (boo!). So what we do here is:
  48. # - import all the objects (thus we may have dupes)
  49. # - delete all the dupes
  50. # - re-import certain objects based upon preference
  51. # - the sysdeps dir should override all other symbols for example
  52. # We need to use shell globbing with obj.* because if we use make's wildcard,
  53. # the wildcard will be evaluated when `make` is run instead of when the make
  54. # target is evaluated. That means if you run `rm obj.* ; make`, the wildcard
  55. # will evaluate to no files :(.
  56. shared_$(LIB_NAME).a: subdirs
  57. $(RM) $@
  58. objs=`cat obj.*` ; \
  59. $(AR) $(ARFLAGS) $@ $$objs && \
  60. $(AR) dN 2 $@ $$objs && \
  61. $(AR) dN 2 $@ $$objs
  62. @for objfile in obj.signal \
  63. obj.string.generic obj.string.$(TARGET_ARCH) obj.string \
  64. obj.sysdeps.common obj.sysdeps.$(TARGET_ARCH) ; do \
  65. if [ -e $$objfile ] ; then \
  66. if [ "$(MAKE_IS_SILENT)" = "n" ] ; then \
  67. echo $(AR) $(ARFLAGS) $@ $$objfile ; \
  68. fi ; \
  69. objs=`cat $$objfile` ; \
  70. fi ; \
  71. $(AR) $(ARFLAGS) $@ $$objs || exit 1 ; \
  72. done
  73. $(AR_LIB_NAME): shared_$(LIB_NAME).a
  74. $(INSTALL) -d $(TOPDIR)lib
  75. $(RM) $@
  76. cp $< $@
  77. $(AR) $(ARFLAGS) $@ misc/internals/static.o `cat nonshared_obj.*`
  78. $(SO_LIB_NAME): $(AR_LIB_NAME)
  79. $(RM) $(TOPDIR)lib/$(SO_FULL_NAME) $(TOPDIR)lib/$(SHARED_MAJORNAME) $@
  80. $(LD) $(LDFLAGS) $(VERSION_SCRIPT) -soname=$(SHARED_MAJORNAME) \
  81. -o $(TOPDIR)lib/$(SO_FULL_NAME) --whole-archive shared_$(LIB_NAME).a \
  82. --no-whole-archive $(TOPDIR)libc/misc/internals/interp.o \
  83. -init __uClibc_init $(TOPDIR)lib/$(UCLIBC_LDSO) $(LDADD_LIBFLOAT) $(LIBGCC)
  84. $(LN) -sf $(SO_FULL_NAME) $(TOPDIR)lib/$(SHARED_MAJORNAME)
  85. $(RM) $(TOPDIR)lib/$(NONSHARED_LIBNAME)
  86. $(AR) $(ARFLAGS) $(TOPDIR)lib/$(NONSHARED_LIBNAME) `cat nonshared_obj.*`
  87. echo "/* GNU ld script" > $@
  88. echo " * Use the shared library, but some functions are only in" >> $@
  89. echo " * the static library, so try that secondarily. */" >> $@
  90. #OUT_FORMAT:=$(shell $(LD) --verbose | grep OUTPUT_FORMAT | awk -F '"' '{print $2}')
  91. #echo "OUTPUT_FORMAT($(OUT_FORMAT))" >> $@
  92. ifeq ($(strip $(COMPAT_ATEXIT)),y)
  93. echo "GROUP ( $(TOPDIR)lib/$(NONSHARED_LIBNAME) $(TOPDIR)lib/$(SHARED_MAJORNAME) )" >> $@
  94. else
  95. echo "GROUP ( $(TOPDIR)lib/$(SHARED_MAJORNAME) $(TOPDIR)lib/$(NONSHARED_LIBNAME) )" >> $@
  96. endif
  97. tags:
  98. ctags -R
  99. clean: subdirs_clean
  100. $(RM) *.a obj.* nonshared_obj.*
  101. subdirs: $(patsubst %, _dir_%, $(DIRS))
  102. subdirs_clean: $(patsubst %, _dirclean_%, $(DIRS))
  103. $(patsubst %, _dir_%, $(DIRS)) : dummy
  104. $(MAKE) -C $(patsubst _dir_%, %, $@)
  105. $(patsubst %, _dirclean_%, $(DIRS)) : dummy
  106. $(MAKE) -C $(patsubst _dirclean_%, %, $@) clean
  107. .PHONY: dummy subdirs