Rules.mak 2.8 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. GCCINCDIR = $(shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
  26. # use '-Os' optimization if available, else use -O2, allow Config to override
  27. ifndef OPTIMIZATION
  28. OPTIMIZATION = $(shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
  29. then echo "-Os"; else echo "-O2" ; fi)
  30. endif
  31. ARFLAGS=r
  32. CCFLAGS=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -Dlinux -D__linux__ -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D__LIBC__
  33. CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)
  34. ifeq ($(strip $(DODEBUG)),true)
  35. CFLAGS += -g
  36. LDFLAGS = -nostdlib -Wl,-warn-common
  37. STRIPTOOL = /bin/true -Since_we_are_debugging
  38. else
  39. CFLAGS += -DNDEBUG #-fomit-frame-pointer
  40. LDFLAGS = -s -nostdlib -Wl,-warn-common
  41. endif
  42. ifndef $(PREFIX)
  43. PREFIX = `pwd`/_install
  44. endif
  45. ifneq ($(strip $(HAS_MMU)),true)
  46. CFLAGS += -D__HAS_NO_MMU__
  47. endif
  48. ifneq ($(strip $(HAS_FLOATS)),true)
  49. CFLAGS += -D__HAS_NO_FLOATS__
  50. endif
  51. ifeq ($(strip $(TARGET_ARCH)),m68k)
  52. CFLAGS += -D__VFORK_MACRO__ -Dconst= -D__const= -D__extension__=
  53. endif
  54. NATIVE_ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/')
  55. # It turns out the currently, function-sections causes ldelf2flt to segfault.
  56. # So till further notice, this is disabled by default....
  57. #
  58. # Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
  59. # to try and strip out any unused junk automagically....
  60. #
  61. #ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
  62. # -o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
  63. # CFLAGS += -ffunction-sections -fdata-sections
  64. # LDFLAGS += --gc-sections
  65. #endif