Rules.mak 8.1 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. ifndef CROSS
  33. CROSS=
  34. endif
  35. CC= $(CROSS)gcc
  36. AR= $(CROSS)ar
  37. LD= $(CROSS)ld
  38. NM= $(CROSS)nm
  39. STRIPTOOL= $(CROSS)strip
  40. # Select the compiler needed to build binaries for your development system
  41. HOSTCC=gcc
  42. HOSTCFLAGS=-O2 -Wall
  43. #--------------------------------------------------------
  44. # Nothing beyond this point should ever be touched by mere mortals.
  45. # Unless you hang out with the gods, you should probably leave all
  46. # this stuff alone.
  47. MAJOR_VERSION:=0
  48. MINOR_VERSION:=9
  49. SUBLEVEL:=18
  50. VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
  51. # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
  52. LC_ALL:= C
  53. export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
  54. SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
  55. SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
  56. UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
  57. LIBNAME:=libc.a
  58. LIBC:=$(TOPDIR)libc/$(LIBNAME)
  59. # Pull in the user's uClibc configuration
  60. ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
  61. -include $(TOPDIR).config
  62. endif
  63. # A nifty macro to make testing gcc features easier
  64. check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
  65. then echo "$(1)"; else echo "$(2)"; fi)
  66. # check if we have nawk, otherwise user awk
  67. AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \
  68. else echo "/usr/bin/awk"; fi)
  69. HOST_ARCH:= $(shell uname -m | sed \
  70. -e 's/i.86/i386/' \
  71. -e 's/sparc.*/sparc/' \
  72. -e 's/arm.*/arm/g' \
  73. -e 's/m68k.*/m68k/' \
  74. -e 's/ppc/powerpc/g' \
  75. -e 's/v850.*/v850/g' \
  76. -e 's/sh[234].*/sh/' \
  77. -e 's/mips.*/mips/' \
  78. )
  79. ifeq ($(strip $(TARGET_ARCH)),)
  80. TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
  81. -e 's/i.86/i386/' \
  82. -e 's/sparc.*/sparc/' \
  83. -e 's/arm.*/arm/g' \
  84. -e 's/m68k.*/m68k/' \
  85. -e 's/ppc/powerpc/g' \
  86. -e 's/v850.*/v850/g' \
  87. -e 's/sh[234]/sh/' \
  88. -e 's/mips-.*/mips/' \
  89. -e 's/mipsel-.*/mipsel/' \
  90. -e 's/cris.*/cris/' \
  91. )
  92. endif
  93. export TARGET_ARCH
  94. ARFLAGS:=r
  95. OPTIMIZATION:=
  96. # Some nice CPU specific optimizations
  97. ifeq ($(strip $(TARGET_ARCH)),i386)
  98. OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
  99. OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0)
  100. CPU_CFLAGS-$(CONFIG_386):="-march=i386"
  101. CPU_CFLAGS-$(CONFIG_486):="-march=i486"
  102. CPU_CFLAGS-$(CONFIG_586):="-march=i586"
  103. CPU_CFLAGS-$(CONFIG_586MMX):="$(call check_gcc,-march=pentium-mmx,-march=i586)"
  104. CPU_CFLAGS-$(CONFIG_686):="-march=i686"
  105. CPU_CFLAGS-$(CONFIG_PENTIUMIII):="$(call check_gcc,-march=pentium3,-march=i686)"
  106. CPU_CFLAGS-$(CONFIG_PENTIUM4):="$(call check_gcc,-march=pentium4,-march=i686)"
  107. CPU_CFLAGS-$(CONFIG_K6):="$(call check_gcc,-march=k6,-march=i586)"
  108. CPU_CFLAGS-$(CONFIG_K7):="$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)"
  109. CPU_CFLAGS-$(CONFIG_CRUSOE):="-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0"
  110. CPU_CFLAGS-$(CONFIG_WINCHIPC6):="$(call check_gcc,-march=winchip-c6,-march=i586)"
  111. CPU_CFLAGS-$(CONFIG_WINCHIP2):="$(call check_gcc,-march=winchip2,-march=i586)"
  112. CPU_CFLAGS-$(CONFIG_CYRIXIII):="$(call check_gcc,-march=c3,-march=i586)"
  113. endif
  114. ifeq ($(strip $(TARGET_ARCH)),arm)
  115. OPTIMIZATION+=-fstrict-aliasing
  116. CPU_CFLAGS-$(CONFIG_GENERIC_ARM):=
  117. CPU_CFLAGS-$(CONFIG_ARM7TDMI):="-march=arm7tdmi"
  118. CPU_CFLAGS-$(CONFIG_STRONGARM):="-march=strongarm"
  119. CPU_CFLAGS-$(CONFIG_XSCALE):="-march=xscale"
  120. endif
  121. ifeq ($(strip $(TARGET_ARCH)),sh)
  122. OPTIMIZATION+=-fstrict-aliasing
  123. OPTIMIZATION+= $(call check_gcc,-mprefergot,)
  124. CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):="-EL"
  125. CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):="-EB"
  126. CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):="-ml"
  127. CPU_CFLAGS-$(ARCH_BIG_ENDIAN):="-mb"
  128. CPU_CFLAGS-$(CONFIG_SH2)+="-m2"
  129. CPU_CFLAGS-$(CONFIG_SH3)+="-m3"
  130. CPU_CFLAGS-$(CONFIG_SH4)+="-m4"
  131. CPU_CFLAGS-$(CONFIG_SH5)+="-m5"
  132. endif
  133. ifeq ($(strip $(TARGET_ARCH)),h8300)
  134. CPU_LDFLAGS-y:=-mh8300h
  135. CPU_CFLAGS-y+=-mh -mint32 -fsigned-char
  136. endif
  137. ifeq ($(strip $(TARGET_ARCH)),cris)
  138. CPU_LDFLAGS-$(CONFIG_CRIS):="-mcrislinux"
  139. CPU_CFLAGS-$(CONFIG_CRIS):="-mlinux"
  140. endif
  141. # use '-Os' optimization if available, else use -O2, allow Config to override
  142. OPTIMIZATION+=$(call check_gcc,-Os,-O2)
  143. # Add a bunch of extra pedantic annoyingly strict checks
  144. XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
  145. XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS)))
  146. CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y)))
  147. # Some nice CFLAGS to work with
  148. CFLAGS:=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \
  149. -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
  150. ifeq ($(DODEBUG),y)
  151. CFLAGS += -g
  152. LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
  153. STRIPTOOL:= true -Since_we_are_debugging
  154. else
  155. LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
  156. endif
  157. # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
  158. #CFLAGS+=-iwithprefix include
  159. CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
  160. ifneq ($(DOASSERTS),y)
  161. CFLAGS += -DNDEBUG
  162. endif
  163. ifeq ($(HAVE_SHARED),y)
  164. LIBRARY_CACHE:=#-DUSE_CACHE
  165. ifeq ($(BUILD_UCLIBC_LDSO),y)
  166. LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
  167. DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
  168. BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO)
  169. else
  170. LDSO:=$(SYSTEM_LDSO)
  171. DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
  172. BUILD_DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
  173. endif
  174. endif
  175. ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
  176. CFLAGS += $(call check_gcc,-msoft-float,)
  177. endif
  178. CFLAGS_NOPIC:=$(CFLAGS)
  179. ifeq ($(DOPIC),y)
  180. ifeq ($(strip $(TARGET_ARCH)),cris)
  181. CFLAGS += -fpic -mlinux
  182. else
  183. CFLAGS += -fPIC
  184. endif
  185. endif
  186. LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
  187. LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
  188. LIBGCC_DIR:=$(dir $(LIBGCC))
  189. # TARGET_PREFIX is the directory under which which the uClibc runtime
  190. # environment will be installed and used on the target system. The
  191. # result will look something like the following:
  192. # TARGET_PREFIX/
  193. # lib/ <contains all runtime and static libs>
  194. # usr/lib/ <this directory is searched for runtime libs>
  195. # etc/ <weher the shared library cache and configuration
  196. # information go if you enabled LIBRARY_CACHE above>
  197. # Very few people will need to change this value from the default...
  198. TARGET_PREFIX = /
  199. ########################################
  200. #
  201. # uClinux shared lib support
  202. #
  203. ifdef CONFIG_BINFMT_SHARED_FLAT
  204. # For the shared version of this, we specify no stack and its library ID
  205. FLTFLAGS += -s 0
  206. LIBID=1
  207. export LIBID FLTFLAGS
  208. SHARED_TARGET = lib/libc
  209. endif