Rules.mak 4.0 KB

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  1. # Rules.make for uClibc
  2. #
  3. # This file contains rules which are shared between multiple Makefiles. All
  4. # normal configuration options live in the file named "Config". You probably
  5. # should not mess with this file unless you know what you are doing...
  6. # -Erik Andersen <andersen@lineo.com> < andersee@debian.org>
  7. #
  8. # Copyright (C) 2000, 2001 by Lineo, inc.
  9. #
  10. # This program is free software; you can redistribute it and/or modify it under
  11. # the terms of the GNU Library General Public License as published by the Free
  12. # Software Foundation; either version 2 of the License, or (at your option) any
  13. # later version.
  14. #
  15. # This program is distributed in the hope that it will be useful, but WITHOUT
  16. # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17. # FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
  18. # details.
  19. #
  20. # You should have received a copy of the GNU Library General Public License
  21. # along with this program; if not, write to the Free Software Foundation, Inc.,
  22. # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23. #
  24. include $(TOPDIR)Config
  25. MAJOR_VERSION=0
  26. MINOR_VERSION=9.5
  27. LIBNAME=libc.a
  28. SHARED_FULLNAME=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).so
  29. SHARED_MAJORNAME=libc.so.$(MAJOR_VERSION)
  30. UCLIBC_LDSO=ld-uclibc.so.$(MAJOR_VERSION)
  31. LIBC=$(TOPDIR)libc/libc.a
  32. BUILDTIME = $(shell TZ=UTC date --utc "+%Y.%m.%d-%H:%M%z")
  33. GCCINCDIR = $(shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
  34. # use '-Os' optimization if available, else use -O2, allow Config to override
  35. ifndef OPTIMIZATION
  36. OPTIMIZATION = $(shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
  37. then echo "-Os"; else echo "-O2" ; fi)
  38. endif
  39. ARFLAGS=r
  40. CCFLAGS=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D_LIBC
  41. TARGET_CCFLAGS=--uclibc-use-build-dir $(WARNINGS) $(OPTIMIZATION) $(CPUFLAGS)
  42. CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)
  43. TARGET_CC= $(TOPDIR)extra/gcc-uClibc/$(TARGET_ARCH)-uclibc-gcc
  44. TARGET_CFLAGS=$(ARCH_CFLAGS) $(TARGET_CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)
  45. ifeq ($(strip $(DODEBUG)),true)
  46. CFLAGS += -g
  47. TARGET_CFLAGS += -g
  48. LDFLAGS = -nostdlib -Wl,-warn-common
  49. TARGET_LDFLAGS = --uclibc-use-build-dir -Wl,-warn-common
  50. STRIPTOOL = /bin/true -Since_we_are_debugging
  51. else
  52. CFLAGS += -DNDEBUG #-fomit-frame-pointer
  53. TARGET_CFLAGS += -DNDEBUG #-fomit-frame-pointer
  54. LDFLAGS = -s -nostdlib -Wl,-warn-common
  55. TARGET_LDFLAGS = --uclibc-use-build-dir -s -Wl,-warn-common
  56. endif
  57. ifeq ($(strip $(DOPIC)),true)
  58. CFLAGS += -fPIC -D__PIC__
  59. endif
  60. ifndef $(PREFIX)
  61. PREFIX = `pwd`/_install
  62. endif
  63. NATIVE_ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/ppc/powerpc/g')
  64. ifeq ($(strip $(HAVE_SHARED)),true)
  65. DO_SHARED=shared
  66. endif
  67. LDSO_PRESENT=$(strip $(shell cd $(TOPDIR)/ldso/d-link; ls -d $(TARGET_ARCH) 2>/dev/null))
  68. # NOTE: This may need to be modified for your system
  69. ifeq ($(NATIVE_ARCH), $(TARGET_ARCH))
  70. SYSTEM_LDSO=$(strip $(shell ldd `which $(CC)` | sed -ne /ld/p | sed -e s/\ =.*//g))
  71. else
  72. SYSTEM_LDSO=/lib/ld-linux.so.2
  73. endif
  74. ifeq ($(LDSO_PRESENT), $(TARGET_ARCH))
  75. LDSO=$(TOPDIR)lib/$(UCLIBC_LDSO)
  76. DYNAMIC_LINKER=$(ROOT_DIR)/lib/$(UCLIBC_LDSO)
  77. else
  78. LDSO=$(SYSTEM_LDSO)
  79. DYNAMIC_LINKER=$(SYSTEM_LDSO)
  80. endif
  81. # Disable libm if HAS_FLOATING_POINT isn't true.
  82. ifneq ($(HAS_FLOATING_POINT),true)
  83. HAS_LIBM_FLOAT = false
  84. HAS_LIBM_DOUBLE = false
  85. HAS_LIBM_LONG_DOUBLE = false
  86. endif
  87. # It turns out the currently, function-sections causes ldelf2flt to segfault.
  88. # So till further notice, this is disabled by default....
  89. #
  90. # Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
  91. # to try and strip out any unused junk automagically....
  92. #
  93. #ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
  94. # -o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
  95. # CFLAGS += -ffunction-sections -fdata-sections
  96. # LDFLAGS += --gc-sections
  97. #endif