TARGET_linux-mips.mk revision 6cc0c334fc8add0d53121ee09993630d804e70fc 
1#
2# Copyright (C) 2010 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16
17# Configuration for Linux on MIPS.
18# Included by combo/select.mk
19
20# You can set TARGET_ARCH_VARIANT to use an arch version other
21# than mips32r2-fp. Each value should correspond to a file named
22# $(BUILD_COMBOS)/arch/<name>.mk which must contain
23# makefile variable definitions similar to the preprocessor
24# defines in build/core/combo/include/arch/<combo>/AndroidConfig.h. Their
25# purpose is to allow module Android.mk files to selectively compile
26# different versions of code based upon the funtionality and
27# instructions available in a given architecture version.
28#
29# The blocks also define specific arch_variant_cflags, which
30# include defines, and compiler settings for the given architecture
31# version.
32#
33ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
34TARGET_ARCH_VARIANT := mips32r2-fp
35endif
36
37ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
38TARGET_GCC_VERSION := 4.7
39else
40TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
41endif
42
43TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
44ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
45$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT))
46endif
47
48include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
49
50# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
51ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
52TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-$(TARGET_GCC_VERSION)
53TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android-
54endif
55
56# Only define these if there's actually a gcc in there.
57# The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it.
58ifneq ($(wildcard $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)),)
59    TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
60    TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
61    TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
62    TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
63    TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
64    TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
65    ifeq ($(TARGET_BUILD_VARIANT),user)
66        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
67    else
68        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \
69            $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
70    endif
71endif
72
73TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
74
75TARGET_mips_CFLAGS :=	-O2 \
76			-fomit-frame-pointer \
77			-fno-strict-aliasing    \
78			-funswitch-loops
79
80# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
81# or in your environment to gdb debugging easier.
82# Don't forget to do a clean build.
83ifeq ($(FORCE_MIPS_DEBUGGING),true)
84  TARGET_mips_CFLAGS += -fno-omit-frame-pointer
85endif
86
87TARGET_GLOBAL_CFLAGS += \
88			$(TARGET_mips_CFLAGS) \
89			-Ulinux -U__unix -U__unix__ -Umips \
90			-fpic -fPIE\
91			-ffunction-sections \
92			-fdata-sections \
93			-funwind-tables \
94			-Wa,--noexecstack \
95			-Werror=format-security \
96			-D_FORTIFY_SOURCE=1 \
97			$(arch_variant_cflags)
98
99android_config_h := $(call select-android-config-h,linux-mips)
100TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
101TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)
102
103# This warning causes dalvik not to build with gcc 4.6+ and -Werror.
104# We cannot turn it off blindly since the option is not available
105# in gcc-4.4.x.
106ifneq ($(filter 4.6 4.6.% 4.7 4.7.%, $(shell $(TARGET_CC) --version)),)
107TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \
108                        -fno-strict-volatile-bitfields
109endif
110
111# This is to avoid the dreaded warning compiler message:
112#   note: the mangling of 'va_list' has changed in GCC 4.4
113#
114# The fact that the mangling changed does not affect the NDK ABI
115# very fortunately (since none of the exposed APIs used va_list
116# in their exported C++ functions). Also, GCC 4.5 has already
117# removed the warning from the compiler.
118#
119TARGET_GLOBAL_CFLAGS += -Wno-psabi
120
121ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
122TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
123endif
124
125TARGET_GLOBAL_LDFLAGS += \
126			-Wl,-z,noexecstack \
127			-Wl,-z,relro \
128			-Wl,-z,now \
129			-Wl,--warn-shared-textrel \
130			$(arch_variant_ldflags)
131
132TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
133
134# More flags/options can be added here
135TARGET_RELEASE_CFLAGS := \
136			-DNDEBUG \
137			-g \
138			-Wstrict-aliasing=2 \
139			-fgcse-after-reload \
140			-frerun-cse-after-loop \
141			-frename-registers
142
143libc_root := bionic/libc
144libm_root := bionic/libm
145libstdc++_root := bionic/libstdc++
146libthread_db_root := bionic/libthread_db
147
148
149## on some hosts, the target cross-compiler is not available so do not run this command
150ifneq ($(wildcard $(TARGET_CC)),)
151# We compile with the global cflags to ensure that
152# any flags which affect libgcc are correctly taken
153# into account.
154TARGET_LIBGCC := \
155  $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
156LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
157ifneq ($(LIBGCC_EH),libgcc_eh.a)
158  TARGET_LIBGCC += $(LIBGCC_EH)
159endif
160endif
161
162# Define FDO (Feedback Directed Optimization) options.
163
164TARGET_FDO_CFLAGS:=
165TARGET_FDO_LIB:=
166
167target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
168        -print-file-name=libgcov.a)
169ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
170  # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
171  # The profile will be generated on /data/local/tmp/profile on the device.
172  TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
173  TARGET_FDO_LIB := $(target_libgcov)
174else
175  # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
176  # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
177  ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
178    TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
179  else
180    ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
181      $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
182    endif
183  endif
184
185  # If the FDO profile directory can't be found, then FDO is off.
186  ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
187    TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
188    TARGET_FDO_LIB := $(target_libgcov)
189  endif
190endif
191
192
193# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
194# symlinks located in out/ to point to the appropriate kernel
195# headers. see 'config/kernel_headers.make' for more details
196#
197ifneq ($(CUSTOM_KERNEL_HEADERS),)
198    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
199    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
200else
201    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common
202    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/arch-$(TARGET_ARCH)
203endif
204KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
205
206TARGET_C_INCLUDES := \
207	$(libc_root)/arch-mips/include \
208	$(libc_root)/include \
209	$(libstdc++_root)/include \
210	$(KERNEL_HEADERS) \
211	$(libm_root)/include \
212	$(libm_root)/include/mips \
213	$(libthread_db_root)/include
214
215TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
216TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
217TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
218
219TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
220TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
221
222TARGET_STRIP_MODULE:=true
223
224TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
225
226TARGET_CUSTOM_LD_COMMAND := true
227
228define transform-o-to-shared-lib-inner
229$(hide) $(PRIVATE_CXX) \
230	-nostdlib -Wl,-soname,$(notdir $@) \
231	-Wl,--gc-sections \
232	-Wl,-shared,-Bsymbolic \
233	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
234	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
235	$(PRIVATE_ALL_OBJECTS) \
236	-Wl,--whole-archive \
237	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
238	-Wl,--no-whole-archive \
239	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
240	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
241	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
242	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
243	-o $@ \
244	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
245	$(PRIVATE_LDFLAGS) \
246	$(PRIVATE_TARGET_FDO_LIB) \
247	$(PRIVATE_TARGET_LIBGCC) \
248	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
249endef
250
251define transform-o-to-executable-inner
252$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
253	-Wl,-dynamic-linker,/system/bin/linker \
254	-Wl,--gc-sections \
255	-Wl,-z,nocopyreloc \
256	-o $@ \
257	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
258	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
259	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
260	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
261	$(PRIVATE_ALL_OBJECTS) \
262	-Wl,--whole-archive \
263	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
264	-Wl,--no-whole-archive \
265	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
266	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
267	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
268	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
269	$(PRIVATE_LDFLAGS) \
270	$(PRIVATE_TARGET_FDO_LIB) \
271	$(PRIVATE_TARGET_LIBGCC) \
272	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
273endef
274
275define transform-o-to-static-executable-inner
276$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
277	-Wl,--gc-sections \
278	-o $@ \
279	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
280	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
281	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
282	$(PRIVATE_LDFLAGS) \
283	$(PRIVATE_ALL_OBJECTS) \
284	-Wl,--whole-archive \
285	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
286	-Wl,--no-whole-archive \
287	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
288	-Wl,--start-group \
289	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
290	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
291	$(PRIVATE_TARGET_FDO_LIB) \
292	$(PRIVATE_TARGET_LIBGCC) \
293	-Wl,--end-group \
294	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
295endef
296