Rules.mak 2.2 KB

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  1. # Rules.make for uCLibc
  2. #
  3. # This file contains rules which are shared between multiple Makefiles.
  4. # All normal configuration options live in the file named "Config".
  5. # You probably should not mess with this file unless you know what you
  6. # are doing...
  7. # -Erik Andersen <andersen@lineo.com> < andersee@debian.org>
  8. #
  9. # Copyright (C) 2000 by Lineo, inc.
  10. #
  11. # This program is free software; you can redistribute it and/or modify it under
  12. # the terms of the GNU Library General Public License as published by the Free
  13. # Software Foundation; either version 2 of the License, or (at your option) any
  14. # later version.
  15. #
  16. # This program is distributed in the hope that it will be useful, but WITHOUT
  17. # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  18. # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
  19. # details.
  20. #
  21. # You should have received a copy of the GNU General Public License along with
  22. # this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  23. # Place, Suite 330, Boston, MA 02111-1307 USA
  24. #
  25. include Config
  26. GCCINCDIR = $(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
  27. ARFLAGS=r
  28. CCFLAGS=$(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -Dlinux -D__linux__ -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D__LIBC__
  29. # Figure out what arch to build...
  30. ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g')
  31. ifeq ($(ARCH), arm)
  32. ARCH_CFLAGS=-fpic
  33. endif
  34. CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS)
  35. ifeq ($(DODEBUG),true)
  36. CFLAGS += -Wall -g
  37. LDFLAGS = -nostdlib
  38. else
  39. CFLAGS += -Wall #-fomit-frame-pointer
  40. LDFLAGS = -s -nostdlib
  41. endif
  42. ifndef $(PREFIX)
  43. PREFIX = `pwd`/_install
  44. endif
  45. ifneq ($(HAS_MMU),true)
  46. CFLAGS += -D__HAS_NO_MMU__
  47. endif
  48. ifneq ($(HAS_FLOATS),true)
  49. CFLAGS += -D__HAS_NO_FLOATS__
  50. endif
  51. ifneq ($(DO_FIXME_STUFF),true)
  52. CFLAGS += -DFIXME
  53. endif
  54. # Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
  55. # to try and strip out any unused junk automagically....
  56. #
  57. ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
  58. -o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
  59. CFLAGS += -ffunction-sections -fdata-sections
  60. LDFLAGS += --gc-sections
  61. endif