Rules.mak 9.2 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266
  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= $(CROSS)strip
  40. INSTALL= install
  41. LN= ln
  42. RM= rm -f
  43. # Select the compiler needed to build binaries for your development system
  44. HOSTCC=gcc
  45. HOSTCFLAGS=-O2 -Wall
  46. #--------------------------------------------------------
  47. # Nothing beyond this point should ever be touched by mere mortals.
  48. # Unless you hang out with the gods, you should probably leave all
  49. # this stuff alone.
  50. MAJOR_VERSION:=0
  51. MINOR_VERSION:=9
  52. SUBLEVEL:=21
  53. VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
  54. # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
  55. LC_ALL:= C
  56. export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
  57. SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
  58. SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
  59. UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
  60. LIBNAME:=libc.a
  61. LIBC:=$(TOPDIR)libc/$(LIBNAME)
  62. # Pull in the user's uClibc configuration
  63. ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
  64. -include $(TOPDIR).config
  65. endif
  66. # A nifty macro to make testing gcc features easier
  67. check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
  68. then echo "$(1)"; else echo "$(2)"; fi)
  69. # check if we have nawk, otherwise user awk
  70. AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \
  71. else echo "/usr/bin/awk"; fi)
  72. HOST_ARCH:=$(shell uname -m | sed \
  73. -e 's/i.86/i386/' \
  74. -e 's/sparc.*/sparc/' \
  75. -e 's/arm.*/arm/g' \
  76. -e 's/m68k.*/m68k/' \
  77. -e 's/ppc/powerpc/g' \
  78. -e 's/v850.*/v850/g' \
  79. -e 's/sh[234].*/sh/' \
  80. -e 's/mips.*/mips/' \
  81. )
  82. ifeq ($(strip $(TARGET_ARCH)),)
  83. TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
  84. -e 's/i.86/i386/' \
  85. -e 's/sparc.*/sparc/' \
  86. -e 's/arm.*/arm/g' \
  87. -e 's/m68k.*/m68k/' \
  88. -e 's/ppc/powerpc/g' \
  89. -e 's/v850.*/v850/g' \
  90. -e 's/sh[234]/sh/' \
  91. -e 's/mips-.*/mips/' \
  92. -e 's/mipsel-.*/mipsel/' \
  93. -e 's/cris.*/cris/' \
  94. )
  95. endif
  96. export TARGET_ARCH
  97. ARFLAGS:=r
  98. OPTIMIZATION:=
  99. PICFLAG:=-fPIC
  100. # Some nice CPU specific optimizations
  101. ifeq ($(strip $(TARGET_ARCH)),i386)
  102. OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
  103. OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0)
  104. CPU_CFLAGS-$(CONFIG_386)+=-march=i386
  105. CPU_CFLAGS-$(CONFIG_486)+=-march=i486
  106. CPU_CFLAGS-$(CONFIG_586)+=-march=i586
  107. CPU_CFLAGS-$(CONFIG_586MMX)+=$(call check_gcc,-march=pentium-mmx,-march=i586)
  108. CPU_CFLAGS-$(CONFIG_686)+=-march=i686
  109. CPU_CFLAGS-$(CONFIG_PENTIUMIII)+=$(call check_gcc,-march=pentium3,-march=i686)
  110. CPU_CFLAGS-$(CONFIG_PENTIUM4)+=$(call check_gcc,-march=pentium4,-march=i686)
  111. CPU_CFLAGS-$(CONFIG_K6)+=$(call check_gcc,-march=k6,-march=i586)
  112. CPU_CFLAGS-$(CONFIG_K7)+=$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)
  113. CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0
  114. CPU_CFLAGS-$(CONFIG_WINCHIPC6)+=$(call check_gcc,-march=winchip-c6,-march=i586)
  115. CPU_CFLAGS-$(CONFIG_WINCHIP2)+=$(call check_gcc,-march=winchip2,-march=i586)
  116. CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i586)
  117. endif
  118. ifeq ($(strip $(TARGET_ARCH)),arm)
  119. OPTIMIZATION+=-fstrict-aliasing
  120. CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
  121. CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
  122. CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
  123. CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
  124. CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
  125. CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
  126. CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
  127. CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4
  128. CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4
  129. CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4
  130. CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv4
  131. CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4
  132. CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
  133. CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110) \
  134. $(call check_gcc,-march=armv5te,-march=armv4 -Wa$(comma)-mxscale)
  135. endif
  136. ifeq ($(strip $(TARGET_ARCH)),sh)
  137. OPTIMIZATION+=-fstrict-aliasing
  138. OPTIMIZATION+= $(call check_gcc,-mprefergot,)
  139. CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
  140. CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
  141. CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-ml
  142. CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb
  143. CPU_CFLAGS-$(CONFIG_SH2)+=-m2
  144. CPU_CFLAGS-$(CONFIG_SH3)+=-m3
  145. CPU_CFLAGS-$(CONFIG_SH4)+=-m4
  146. endif
  147. ifeq ($(strip $(TARGET_ARCH)),sh64)
  148. OPTIMIZATION+=-fstrict-aliasing
  149. CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL
  150. CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB
  151. CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):=-ml
  152. CPU_CFLAGS-$(ARCH_BIG_ENDIAN):=-mb
  153. CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media
  154. endif
  155. ifeq ($(strip $(TARGET_ARCH)),h8300)
  156. CPU_LDFLAGS-$(CONFIG_H8300H)+= -ms8300h
  157. CPU_LDFLAGS-$(CONFIG_H8S) += -ms8300s
  158. CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 -fsigned-char
  159. CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 -fsigned-char
  160. endif
  161. ifeq ($(strip $(TARGET_ARCH)),cris)
  162. CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
  163. CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
  164. PICFLAG=-fpic
  165. endif
  166. # use '-Os' optimization if available, else use -O2, allow Config to override
  167. OPTIMIZATION+=$(call check_gcc,-Os,-O2)
  168. # Add a bunch of extra pedantic annoyingly strict checks
  169. XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
  170. XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS)))
  171. CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y)))
  172. # Some nice CFLAGS to work with
  173. CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \
  174. -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
  175. ifeq ($(DODEBUG),y)
  176. CFLAGS += -g
  177. #CFLAGS = $(XWARNINGS) -O0 -g $(CPU_CFLAGS) -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
  178. LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
  179. STRIPTOOL:= true -Since_we_are_debugging
  180. else
  181. LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
  182. endif
  183. # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
  184. #CFLAGS+=-iwithprefix include
  185. CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
  186. ifneq ($(DOASSERTS),y)
  187. CFLAGS += -DNDEBUG
  188. endif
  189. ifeq ($(HAVE_SHARED),y)
  190. LIBRARY_CACHE:=#-DUSE_CACHE
  191. ifeq ($(BUILD_UCLIBC_LDSO),y)
  192. LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
  193. DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
  194. BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO)
  195. else
  196. LDSO:=$(SYSTEM_LDSO)
  197. DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
  198. BUILD_DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
  199. endif
  200. endif
  201. ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
  202. CFLAGS += $(call check_gcc,-msoft-float,)
  203. #LDFLAGS+= -Wa,-mno-fpu
  204. endif
  205. CFLAGS_NOPIC:=$(CFLAGS)
  206. ifeq ($(DOPIC),y)
  207. CFLAGS += $(PICFLAG)
  208. endif
  209. LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
  210. LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
  211. LIBGCC_DIR:=$(dir $(LIBGCC))
  212. # TARGET_PREFIX is the directory under which which the uClibc runtime
  213. # environment will be installed and used on the target system. The
  214. # result will look something like the following:
  215. # TARGET_PREFIX/
  216. # lib/ <contains all runtime and static libs>
  217. # usr/lib/ <this directory is searched for runtime libs>
  218. # etc/ <weher the shared library cache and configuration
  219. # information go if you enabled LIBRARY_CACHE above>
  220. # Very few people will need to change this value from the default...
  221. TARGET_PREFIX = /
  222. ########################################
  223. #
  224. # uClinux shared lib support
  225. #
  226. ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y)
  227. # For the shared version of this, we specify no stack and its library ID
  228. FLTFLAGS += -s 0
  229. LIBID=1
  230. export LIBID FLTFLAGS
  231. SHARED_TARGET = lib/libc
  232. endif