rules.mk: reduce shexport to one line to allow it to be put in a target context
[openwrt/openwrt.git] / rules.mk
1 #
2 # Copyright (C) 2006-2010 OpenWrt.org
3 #
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
6 #
7
8 ifneq ($(__rules_inc),1)
9 __rules_inc=1
10
11 ifeq ($(DUMP),)
12 -include $(TOPDIR)/.config
13 endif
14 include $(TOPDIR)/include/debug.mk
15 include $(TOPDIR)/include/verbose.mk
16
17 export TMP_DIR:=$(TOPDIR)/tmp
18
19 qstrip=$(strip $(subst ",,$(1)))
20 #"))
21
22 empty:=
23 space:= $(empty) $(empty)
24 comma:=,
25 merge=$(subst $(space),,$(1))
26 confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
27 strip_last=$(patsubst %.$(lastword $(subst .,$(space),$(1))),%,$(1))
28
29 define sep
30
31 endef
32
33 _SINGLE=export MAKEFLAGS=$(space);
34 CFLAGS:=
35 ARCH:=$(subst i486,i386,$(subst i586,i386,$(subst i686,i386,$(call qstrip,$(CONFIG_ARCH)))))
36 ARCH_PACKAGES:=$(call qstrip,$(CONFIG_TARGET_ARCH_PACKAGES))
37 BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
38 TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))
39 export EXTRA_OPTIMIZATION:=$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
40 TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
41 BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
42 SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
43 export SHELL:=/usr/bin/env bash
44
45 OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
46
47 ifeq ($(ARCH),powerpc)
48 FPIC:=-fPIC
49 else
50 FPIC:=-fpic
51 endif
52
53 HOST_FPIC:=-fPIC
54
55 ARCH_SUFFIX:=$(call qstrip,$(CONFIG_CPU_TYPE))
56 GCC_ARCH:=
57
58 ifneq ($(ARCH_SUFFIX),)
59 ARCH_SUFFIX:=_$(ARCH_SUFFIX)
60 endif
61 ifneq ($(filter -march=armv%,$(TARGET_OPTIMIZATION)),)
62 GCC_ARCH:=$(patsubst -march=%,%,$(filter -march=armv%,$(TARGET_OPTIMIZATION)))
63 endif
64 ifdef CONFIG_HAS_SPE_FPU
65 TARGET_SUFFIX:=$(TARGET_SUFFIX)spe
66 endif
67 ifdef CONFIG_MIPS64_ABI
68 ifneq ($(CONFIG_MIPS64_ABI_O32),y)
69 ARCH_SUFFIX:=$(ARCH_SUFFIX)_$(call qstrip,$(CONFIG_MIPS64_ABI))
70 endif
71 endif
72
73 DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
74 BIN_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin/$(BOARD))
75 INCLUDE_DIR:=$(TOPDIR)/include
76 SCRIPT_DIR:=$(TOPDIR)/scripts
77 BUILD_DIR_BASE:=$(TOPDIR)/build_dir
78 BUILD_DIR_HOST:=$(BUILD_DIR_BASE)/host
79 STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
80 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
81 GCCV:=$(call qstrip,$(CONFIG_GCC_VERSION))
82 LIBC:=$(call qstrip,$(CONFIG_LIBC))
83 LIBCV:=$(call qstrip,$(CONFIG_LIBC_VERSION))
84 REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))
85 GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux
86 DIR_SUFFIX:=_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi)
87 BIN_DIR:=$(BIN_DIR)$(if $(CONFIG_USE_UCLIBC),,-$(LIBC))
88 TARGET_DIR_NAME = target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
89 TOOLCHAIN_DIR_NAME = toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
90 else
91 ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
92 GNU_TARGET_NAME=$(call qstrip,$(CONFIG_TARGET_NAME))
93 else
94 GNU_TARGET_NAME=$(shell gcc -dumpmachine)
95 endif
96 REAL_GNU_TARGET_NAME=$(GNU_TARGET_NAME)
97 TARGET_DIR_NAME:=target-$(GNU_TARGET_NAME)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
98 TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
99 endif
100
101 PACKAGE_DIR:=$(BIN_DIR)/packages
102 BUILD_DIR:=$(BUILD_DIR_BASE)/$(TARGET_DIR_NAME)
103 STAGING_DIR:=$(TOPDIR)/staging_dir/$(TARGET_DIR_NAME)
104 BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/$(TOOLCHAIN_DIR_NAME)
105 TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/$(TOOLCHAIN_DIR_NAME)
106 STAMP_DIR:=$(BUILD_DIR)/stamp
107 STAMP_DIR_HOST=$(BUILD_DIR_HOST)/stamp
108 TARGET_ROOTFS_DIR?=$(if $(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(BUILD_DIR))
109 TARGET_DIR:=$(TARGET_ROOTFS_DIR)/root-$(BOARD)
110 STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
111 BUILD_LOG_DIR:=$(TOPDIR)/logs
112 PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
113
114 TARGET_PATH:=$(STAGING_DIR_HOST)/bin:$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
115 TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(EXTRA_OPTIMIZATION)
116 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
117 TARGET_ASFLAGS_DEFAULT = $(TARGET_CFLAGS)
118 TARGET_ASFLAGS = $(TARGET_ASFLAGS_DEFAULT)
119 TARGET_CPPFLAGS:=-I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include
120 TARGET_LDFLAGS:=-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib
121 ifneq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
122 LIBGCC_S_PATH=$(realpath $(wildcard $(call qstrip,$(CONFIG_LIBGCC_ROOT_DIR))/$(call qstrip,$(CONFIG_LIBGCC_FILE_SPEC))))
123 LIBGCC_S=$(if $(LIBGCC_S_PATH),-L$(dir $(LIBGCC_S_PATH)) -lgcc_s)
124 LIBGCC_A=$(realpath $(lastword $(wildcard $(dir $(LIBGCC_S_PATH))/gcc/*/*/libgcc.a)))
125 else
126 LIBGCC_A=$(lastword $(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
127 LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-L$(TOOLCHAIN_DIR)/lib -lgcc_s,$(LIBGCC_A))
128 endif
129 LIBRPC=-lrpc
130 LIBRPC_DEPENDS=+librpc
131
132 ifeq ($(CONFIG_ARCH_64BIT),y)
133 LIB_SUFFIX:=64
134 endif
135
136 ifndef DUMP
137 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
138 -include $(TOOLCHAIN_DIR)/info.mk
139 export GCC_HONOUR_COPTS:=0
140 TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
141 TARGET_CFLAGS+= -fhonour-copts $(if $(CONFIG_GCC_VERSION_4_4)$(CONFIG_GCC_VERSION_4_5),,-Wno-error=unused-but-set-variable)
142 TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include -I$(TOOLCHAIN_DIR)/include
143 TARGET_LDFLAGS+= -L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib
144 TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
145 else
146 ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
147 TARGET_CROSS:=$(call qstrip,$(CONFIG_TOOLCHAIN_PREFIX))
148 TOOLCHAIN_ROOT_DIR:=$(call qstrip,$(CONFIG_TOOLCHAIN_ROOT))
149 TOOLCHAIN_BIN_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_BIN_PATH)))
150 TOOLCHAIN_INC_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_INC_PATH)))
151 TOOLCHAIN_LIB_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_LIB_PATH)))
152 ifneq ($(TOOLCHAIN_BIN_DIRS),)
153 TARGET_PATH:=$(subst $(space),:,$(TOOLCHAIN_BIN_DIRS)):$(TARGET_PATH)
154 endif
155 ifneq ($(TOOLCHAIN_INC_DIRS),)
156 TARGET_CPPFLAGS+= $(patsubst %,-I%,$(TOOLCHAIN_INC_DIRS))
157 endif
158 ifneq ($(TOOLCHAIN_LIB_DIRS),)
159 TARGET_LDFLAGS+= $(patsubst %,-L%,$(TOOLCHAIN_LIB_DIRS))
160 endif
161 TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
162 endif
163 endif
164 endif
165 TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(TARGET_PATH)
166
167 ifeq ($(CONFIG_SOFT_FLOAT),y)
168 SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
169 ifeq ($(CONFIG_arm),y)
170 TARGET_CFLAGS+= -mfloat-abi=soft
171 else
172 TARGET_CFLAGS+= -msoft-float
173 endif
174 else
175 SOFT_FLOAT_CONFIG_OPTION:=
176 ifeq ($(CONFIG_arm),y)
177 TARGET_CFLAGS+= -mfloat-abi=hard
178 endif
179 endif
180
181 export PATH:=$(TARGET_PATH)
182 export STAGING_DIR
183 export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
184
185 PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config
186
187 export PKG_CONFIG
188
189 HOSTCC:=gcc
190 HOSTCXX:=g++
191 HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include -I$(STAGING_DIR_HOST)/usr/include
192 HOST_CFLAGS:=-O2 $(HOST_CPPFLAGS)
193 HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib -L$(STAGING_DIR_HOST)/usr/lib
194
195 TARGET_CC:=$(TARGET_CROSS)gcc
196 TARGET_AR:=$(TARGET_CROSS)ar
197 TARGET_RANLIB:=$(TARGET_CROSS)ranlib
198 TARGET_CXX:=$(TARGET_CROSS)g++
199 KPATCH:=$(SCRIPT_DIR)/patch-kernel.sh
200 SED:=$(STAGING_DIR_HOST)/bin/sed -i -e
201 CP:=cp -fpR
202 LN:=ln -sf
203 XARGS:=xargs -r
204
205 INSTALL_BIN:=install -m0755
206 INSTALL_DIR:=install -d -m0755
207 INSTALL_DATA:=install -m0644
208 INSTALL_CONF:=install -m0600
209
210 TARGET_CC_NOCACHE:=$(TARGET_CC)
211 TARGET_CXX_NOCACHE:=$(TARGET_CXX)
212 HOSTCC_NOCACHE:=$(HOSTCC)
213 HOSTCXX_NOCACHE:=$(HOSTCXX)
214 export TARGET_CC_NOCACHE
215 export TARGET_CXX_NOCACHE
216 export HOSTCC_NOCACHE
217
218 ifneq ($(CONFIG_CCACHE),)
219 TARGET_CC:= ccache_cc
220 TARGET_CXX:= ccache_cxx
221 HOSTCC:= ccache $(HOSTCC)
222 HOSTCXX:= ccache $(HOSTCXX)
223 endif
224
225 TARGET_CONFIGURE_OPTS = \
226 AR=$(TARGET_CROSS)ar \
227 AS="$(TARGET_CC) -c $(TARGET_ASFLAGS)" \
228 LD=$(TARGET_CROSS)ld \
229 NM=$(TARGET_CROSS)nm \
230 CC="$(TARGET_CC)" \
231 GCC="$(TARGET_CC)" \
232 CXX="$(TARGET_CXX)" \
233 RANLIB=$(TARGET_CROSS)ranlib \
234 STRIP=$(TARGET_CROSS)strip \
235 OBJCOPY=$(TARGET_CROSS)objcopy \
236 OBJDUMP=$(TARGET_CROSS)objdump \
237 SIZE=$(TARGET_CROSS)size
238
239 # strip an entire directory
240 ifneq ($(CONFIG_NO_STRIP),)
241 RSTRIP:=:
242 STRIP:=:
243 else
244 ifneq ($(CONFIG_USE_STRIP),)
245 STRIP:=$(TARGET_CROSS)strip $(call qstrip,$(CONFIG_STRIP_ARGS))
246 else
247 ifneq ($(CONFIG_USE_SSTRIP),)
248 STRIP:=$(STAGING_DIR_HOST)/bin/sstrip
249 endif
250 endif
251 RSTRIP:= \
252 export CROSS="$(TARGET_CROSS)" \
253 $(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1) \
254 $(if $(CONFIG_KERNEL_PROFILING),KEEP_SYMBOLS=1); \
255 NM="$(TARGET_CROSS)nm" \
256 STRIP="$(STRIP)" \
257 STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \
258 $(SCRIPT_DIR)/rstrip.sh
259 endif
260
261 ifeq ($(CONFIG_IPV6),y)
262 DISABLE_IPV6:=
263 else
264 DISABLE_IPV6:=--disable-ipv6
265 endif
266
267 TAR_OPTIONS:=-xf -
268
269 ifeq ($(CONFIG_BUILD_LOG),y)
270 BUILD_LOG:=1
271 endif
272
273 export BISON_PKGDATADIR:=$(STAGING_DIR_HOST)/share/bison
274 export M4:=$(STAGING_DIR_HOST)/bin/m4
275
276 define shvar
277 V_$(subst .,_,$(subst -,_,$(subst /,_,$(1))))
278 endef
279
280 define shexport
281 export $(call shvar,$(1))=$$(call $(1))
282 endef
283
284 define include_mk
285 $(eval -include $(if $(DUMP),,$(STAGING_DIR)/mk/$(strip $(1))))
286 endef
287
288 # Execute commands under flock
289 # $(1) => The shell expression.
290 # $(2) => The lock name. If not given, the global lock will be used.
291 define locked
292 SHELL= \
293 $(STAGING_DIR_HOST)/bin/flock \
294 $(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock \
295 -c '$(subst ','\'',$(1))'
296 endef
297
298 # Recursively copy paths into another directory, purge dangling
299 # symlinks before.
300 # $(1) => File glob expression
301 # $(2) => Destination directory
302 define file_copy
303 for src_dir in $(sort $(foreach d,$(wildcard $(1)),$(dir $(d)))); do \
304 ( cd $$src_dir; find -type f -or -type d ) | \
305 ( cd $(2); while :; do \
306 read FILE; \
307 [ -z "$$FILE" ] && break; \
308 [ -L "$$FILE" ] || continue; \
309 echo "Removing symlink $(2)/$$FILE"; \
310 rm -f "$$FILE"; \
311 done; ); \
312 done; \
313 $(CP) $(1) $(2)
314 endef
315
316 # file extension
317 ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))
318
319 all:
320 FORCE: ;
321 .PHONY: FORCE
322
323 val.%:
324 @$(if $(filter undefined,$(origin $*)),\
325 echo "$* undefined" >&2, \
326 echo '$(subst ','"'"',$($*))' \
327 )
328
329 var.%:
330 @$(if $(filter undefined,$(origin $*)),\
331 echo "$* undefined" >&2, \
332 echo "$*='"'$(subst ','"'\"'\"'"',$($*))'"'" \
333 )
334
335 endif #__rules_inc