Rules.mak 7.4 KB

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  1. # Rules.make for uClibc
  2. #
  3. # Copyright (C) 2000 by Lineo, inc.
  4. # Copyright (C) 2000-2002 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. # This file contains rules which are shared between multiple Makefiles.
  21. # All normal configuration options live in the file named ".config".
  22. # Don't mess with this file unless you know what you are doing.
  23. #--------------------------------------------------------
  24. # If you are running a cross compiler, you will want to set 'CROSS'
  25. # to something more interesting... Target architecture is determined
  26. # by asking the CC compiler what arch it compiles things for, so unless
  27. # your compiler is broken, you should not need to specify TARGET_ARCH
  28. #
  29. # Most people will set this stuff on the command line, i.e.
  30. # make CROSS=mipsel-linux-
  31. # will build uClibc for 'mipsel'.
  32. CROSS=
  33. CC= $(CROSS)gcc
  34. AR= $(CROSS)ar
  35. LD= $(CROSS)ld
  36. NM= $(CROSS)nm
  37. STRIPTOOL= $(CROSS)strip
  38. # Select the compiler needed to build binaries for your development system
  39. NATIVE_CC=gcc
  40. NATIVE_CFLAGS=-O2 -Wall
  41. #--------------------------------------------------------
  42. # Nothing beyond this point should ever be touched by mere mortals.
  43. # Unless you hang out with the gods, you should probably leave all
  44. # this stuff alone.
  45. MAJOR_VERSION:=0
  46. MINOR_VERSION:=9
  47. SUBLEVEL:=16
  48. VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
  49. # Ensure consistent filename sort order
  50. LC_COLLATE:= C
  51. export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_COLLATE
  52. SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
  53. SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
  54. UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
  55. LIBNAME:=libc.a
  56. LIBC:=$(TOPDIR)libc/$(LIBNAME)
  57. # Pull in the user's uClibc configuration
  58. ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
  59. include_config := 1
  60. -include $(TOPDIR).config
  61. endif
  62. # A nifty macro to make testing gcc features easier
  63. check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
  64. then echo "$(1)"; else echo "$(2)"; fi)
  65. # check if we have nawk, otherwise user awk
  66. AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \
  67. else echo "/usr/bin/awk"; fi)
  68. NATIVE_ARCH:= $(shell uname -m | sed \
  69. -e 's/i.86/i386/' \
  70. -e 's/sparc.*/sparc/' \
  71. -e 's/arm.*/arm/g' \
  72. -e 's/m68k.*/m68k/' \
  73. -e 's/ppc/powerpc/g' \
  74. -e 's/v850.*/v850/g' \
  75. -e 's/sh[234].*/sh/' \
  76. -e 's/mips.*/mips/' \
  77. )
  78. ifeq ($(strip $(TARGET_ARCH)),)
  79. TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
  80. -e 's/i.86/i386/' \
  81. -e 's/sparc.*/sparc/' \
  82. -e 's/arm.*/arm/g' \
  83. -e 's/m68k.*/m68k/' \
  84. -e 's/ppc/powerpc/g' \
  85. -e 's/v850.*/v850/g' \
  86. -e 's/sh[234]/sh/' \
  87. -e 's/mips-.*/mips/' \
  88. -e 's/mipsel-.*/mipsel/' \
  89. -e 's/cris.*/cris/' \
  90. )
  91. endif
  92. export TARGET_ARCH
  93. ARFLAGS:=r
  94. # use '-Os' optimization if available, else use -O2, allow Config to override
  95. OPTIMIZATION:=
  96. OPTIMIZATION+=$(call check_gcc,-Os,-O2)
  97. # Some nice CPU specific optimizations
  98. ifeq ($(strip $(TARGET_ARCH)),i386)
  99. OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
  100. OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0)
  101. CPU_CFLAGS-$(CONFIG_386):="-march=i386"
  102. CPU_CFLAGS-$(CONFIG_486):="-march=i486"
  103. CPU_CFLAGS-$(CONFIG_586):="-march=i586"
  104. CPU_CFLAGS-$(CONFIG_586MMX):="$(call check_gcc,-march=pentium-mmx,-march=i586)"
  105. CPU_CFLAGS-$(CONFIG_686):="-march=i686"
  106. CPU_CFLAGS-$(CONFIG_PENTIUMIII):="$(call check_gcc,-march=pentium3,-march=i686)"
  107. CPU_CFLAGS-$(CONFIG_PENTIUM4):="$(call check_gcc,-march=pentium4,-march=i686)"
  108. CPU_CFLAGS-$(CONFIG_K6):="$(call check_gcc,-march=k6,-march=i586)"
  109. CPU_CFLAGS-$(CONFIG_K7):="$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)"
  110. CPU_CFLAGS-$(CONFIG_CRUSOE):="-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0"
  111. CPU_CFLAGS-$(CONFIG_WINCHIPC6):="$(call check_gcc,-march=winchip-c6,-march=i586)"
  112. CPU_CFLAGS-$(CONFIG_WINCHIP2):="$(call check_gcc,-march=winchip2,-march=i586)"
  113. CPU_CFLAGS-$(CONFIG_CYRIXIII):="$(call check_gcc,-march=c3,-march=i586)"
  114. endif
  115. ifeq ($(strip $(TARGET_ARCH)),arm)
  116. OPTIMIZATION+=-fstrict-aliasing
  117. CPU_CFLAGS-$(CONFIG_GENERIC_ARM):=
  118. CPU_CFLAGS-$(CONFIG_ARM7TDMI):="-mcpu=arm7tdmi"
  119. CPU_CFLAGS-$(CONFIG_STRONGARM):="-mcpu=strongarm"
  120. CPU_CFLAGS-$(CONFIG_XSCALE):="$(call check_gcc,-mcpu=xscale,-mcpu=strongarm)"
  121. endif
  122. ifeq ($(strip $(TARGET_ARCH)),sh)
  123. OPTIMIZATION+=-fstrict-aliasing
  124. OPTIMIZATION+= $(call check_gcc,-mprefergot,)
  125. CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):="-EL"
  126. CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):="-EB"
  127. CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):="-ml"
  128. CPU_CFLAGS-$(ARCH_BIG_ENDIAN):="-mb"
  129. CPU_CFLAGS-$(CONFIG_SH2)+="-m2"
  130. CPU_CFLAGS-$(CONFIG_SH3)+="-m3"
  131. CPU_CFLAGS-$(CONFIG_SH4)+="-m4"
  132. CPU_CFLAGS-$(CONFIG_SH5)+="-m5"
  133. endif
  134. # Add a bunch of extra pedantic annoyingly strict checks
  135. WARNINGS+=-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
  136. # Some nice CFLAGS to work with
  137. CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \
  138. -D_LIBC $(CPU_CFLAGS-y) $(ARCH_CFLAGS) -I$(TOPDIR)include -I.
  139. # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
  140. #CFLAGS+=-iwithprefix include
  141. CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
  142. ifeq ($(strip $(DODEBUG)),y)
  143. CFLAGS += -g
  144. LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
  145. STRIPTOOL:= true -Since_we_are_debugging
  146. else
  147. LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
  148. endif
  149. ifneq ($(strip $(DOASSERTS)),y)
  150. CFLAGS += -DNDEBUG
  151. endif
  152. ifeq ($(strip $(HAVE_SHARED)),y)
  153. LIBRARY_CACHE:=#-DUSE_CACHE
  154. ifeq ($(strip $(BUILD_UCLIBC_LDSO)),y)
  155. LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
  156. DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
  157. BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO)
  158. else
  159. LDSO:=$(SYSTEM_LDSO)
  160. DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
  161. BUILD_DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
  162. endif
  163. endif
  164. ifeq ($(strip $(DOPIC)),y)
  165. CFLAGS += -fPIC
  166. endif
  167. ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y)
  168. CFLAGS += $(call check_gcc,-msoft-float,)
  169. endif
  170. LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
  171. LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
  172. LIBGCC_DIR:=$(dir $(LIBGCC))
  173. # TARGET_PREFIX is the directory under which which the uClibc runtime
  174. # environment will be installed and used on the target system. The
  175. # result will look something like the following:
  176. # TARGET_PREFIX/
  177. # lib/ <contains all runtime and static libs>
  178. # usr/lib/ <this directory is searched for runtime libs>
  179. # etc/ <weher the shared library cache and configuration
  180. # information go if you enabled LIBRARY_CACHE above>
  181. # Very few people will need to change this value from the default...
  182. TARGET_PREFIX = /