Rules.mak 3.5 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$(GCCINCDIR) -I. -D_LIBC
  41. CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)
  42. ifeq ($(strip $(DODEBUG)),true)
  43. CFLAGS += -g
  44. LDFLAGS = -nostdlib -Wl,-warn-common
  45. STRIPTOOL = /bin/true -Since_we_are_debugging
  46. else
  47. CFLAGS += -DNDEBUG #-fomit-frame-pointer
  48. LDFLAGS = -s -nostdlib -Wl,-warn-common
  49. endif
  50. ifndef $(PREFIX)
  51. PREFIX = `pwd`/_install
  52. endif
  53. NATIVE_ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/ppc/powerpc/g')
  54. ifeq ($(strip $(HAS_MMU)),true)
  55. DO_SHARED=shared
  56. endif
  57. LDSO_PRESENT=$(strip $(shell cd $(TOPDIR)/ldso/d-link; ls -d $(TARGET_ARCH) 2>/dev/null))
  58. # NOTE: This may need to be modified for your system
  59. ifeq ($(NATIVE_ARCH), $(TARGET_ARCH))
  60. SYSTEM_LDSO=$(strip $(shell ldd `which $(CC)` | sed -ne /ld/p | sed -e s/\ =.*//g))
  61. else
  62. SYSTEM_LDSO=/lib/ld-linux.so.2
  63. endif
  64. ifeq ($(LDSO_PRESENT), $(TARGET_ARCH))
  65. LDSO=$(TOPDIR)lib/$(UCLIBC_LDSO)
  66. DYNAMIC_LINKER=$(ROOT_DIR)/lib/$(UCLIBC_LDSO)
  67. else
  68. LDSO=$(SYSTEM_LDSO)
  69. DYNAMIC_LINKER=$(SYSTEM_LDSO)
  70. endif
  71. # Disable libm if HAS_FLOATING_POINT isn't true.
  72. ifneq ($(HAS_FLOATING_POINT),true)
  73. HAS_LIBM_FLOAT = false
  74. HAS_LIBM_DOUBLE = false
  75. HAS_LIBM_LONG_DOUBLE = false
  76. endif
  77. # It turns out the currently, function-sections causes ldelf2flt to segfault.
  78. # So till further notice, this is disabled by default....
  79. #
  80. # Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
  81. # to try and strip out any unused junk automagically....
  82. #
  83. #ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
  84. # -o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
  85. # CFLAGS += -ffunction-sections -fdata-sections
  86. # LDFLAGS += --gc-sections
  87. #endif