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Ben Chengdb4fc202013-10-04 16:02:59 -07001#
2# Copyright (C) 2013 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 ARM.
18# Included by combo/select.mk
19
20# You can set TARGET_ARCH_VARIANT to use an arch version other
21# than ARMv5TE. 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 $(TARGET_ARCH_VARIANT)),)
34TARGET_ARCH_VARIANT := armv8
35endif
36
37ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
Ben Cheng61546902014-04-09 15:56:47 -070038TARGET_GCC_VERSION := 4.9
Ben Chengdb4fc202013-10-04 16:02:59 -070039else
40TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
41endif
42
Alexey Volkova1779eb2013-12-11 17:18:56 +040043TARGET_IS_64_BIT := true
44
Ben Chengdb4fc202013-10-04 16:02:59 -070045TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
46ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
47$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT))
48endif
49
50include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
51
52# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
53ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
54TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION)
55TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android-
56endif
57
58TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
59TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
60TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
61TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
62TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
Christopher Ferrisa6e2f932014-03-18 14:50:09 -070063TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX)
Ben Chengdb4fc202013-10-04 16:02:59 -070064TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
Ben Chengdb4fc202013-10-04 16:02:59 -070065
66TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
67
Elliott Hughesc2947792013-12-16 18:01:19 -080068TARGET_GLOBAL_CFLAGS += \
69 -fno-strict-aliasing \
70
Colin Cross4f0eb7d2014-01-21 19:35:38 -080071android_config_h := $(call select-android-config-h,linux-arm64)
Ben Chengdb4fc202013-10-04 16:02:59 -070072
73TARGET_GLOBAL_CFLAGS += \
74 -fpic -fPIE \
Ben Cheng61546902014-04-09 15:56:47 -070075 -fstack-protector \
Ben Chengdb4fc202013-10-04 16:02:59 -070076 -ffunction-sections \
77 -fdata-sections \
78 -funwind-tables \
79 -Wa,--noexecstack \
80 -Werror=format-security \
81 -D_FORTIFY_SOURCE=2 \
82 -fno-short-enums \
83 $(arch_variant_cflags) \
84 -include $(android_config_h) \
85 -I $(dir $(android_config_h))
86
Elliott Hughes18042e12014-02-05 16:23:47 -080087# Help catch common 32/64-bit errors.
88TARGET_GLOBAL_CFLAGS += \
89 -Werror=pointer-to-int-cast \
90 -Werror=int-to-pointer-cast \
Colin Cross8f47fc32014-01-27 17:34:21 -080091
Ben Chengdb4fc202013-10-04 16:02:59 -070092TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields
93
94# This is to avoid the dreaded warning compiler message:
95# note: the mangling of 'va_list' has changed in GCC 4.4
96#
97# The fact that the mangling changed does not affect the NDK ABI
98# very fortunately (since none of the exposed APIs used va_list
99# in their exported C++ functions). Also, GCC 4.5 has already
100# removed the warning from the compiler.
101#
102TARGET_GLOBAL_CFLAGS += -Wno-psabi
103
Ben Cheng74a8faf2013-10-29 16:13:30 -0700104# TODO - temporarily remove "-Wl,-z,relro -Wl,-z,now" as they cause segmentation fault on the
105# v8 foundation model.
Ben Chengdb4fc202013-10-04 16:02:59 -0700106TARGET_GLOBAL_LDFLAGS += \
107 -Wl,-z,noexecstack \
Ben Chengdb4fc202013-10-04 16:02:59 -0700108 -Wl,--warn-shared-textrel \
109 -Wl,--fatal-warnings \
110 $(arch_variant_ldflags)
111
112TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
113
114# More flags/options can be added here
115TARGET_RELEASE_CFLAGS := \
116 -DNDEBUG \
117 -O2 -g \
118 -Wstrict-aliasing=2 \
119 -fgcse-after-reload \
120 -frerun-cse-after-loop \
121 -frename-registers
122
123libc_root := bionic/libc
124libm_root := bionic/libm
125libstdc++_root := bionic/libstdc++
Ben Chengdb4fc202013-10-04 16:02:59 -0700126
Ben Cheng71c36eb2013-10-28 10:27:58 -0700127TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
128 -print-libgcc-file-name)
Ben Chengdb4fc202013-10-04 16:02:59 -0700129
Elliott Hughesdddb5662014-01-10 16:35:08 -0800130KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
131KERNEL_HEADERS_ARCH := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
Elliott Hughes26990f52013-12-20 15:37:55 -0800132KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
Ben Chengdb4fc202013-10-04 16:02:59 -0700133
134TARGET_C_INCLUDES := \
Colin Cross4f0eb7d2014-01-21 19:35:38 -0800135 $(libc_root)/arch-arm64/include \
Ben Chengdb4fc202013-10-04 16:02:59 -0700136 $(libc_root)/include \
137 $(libstdc++_root)/include \
138 $(KERNEL_HEADERS) \
139 $(libm_root)/include \
Colin Cross4f0eb7d2014-01-21 19:35:38 -0800140 $(libm_root)/include/arm64 \
Ben Chengdb4fc202013-10-04 16:02:59 -0700141
Ben Cheng71c36eb2013-10-28 10:27:58 -0700142TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
143TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
144TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
Ben Chengdb4fc202013-10-04 16:02:59 -0700145
Ben Cheng71c36eb2013-10-28 10:27:58 -0700146TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
147TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
Ben Chengdb4fc202013-10-04 16:02:59 -0700148
149TARGET_STRIP_MODULE:=true
150
151TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
152
153TARGET_CUSTOM_LD_COMMAND := true
154
155define transform-o-to-shared-lib-inner
156$(hide) $(PRIVATE_CXX) \
157 -nostdlib -Wl,-soname,$(notdir $@) \
Ben Cheng61546902014-04-09 15:56:47 -0700158 -Wl,--gc-sections \
Ben Chengdb4fc202013-10-04 16:02:59 -0700159 -Wl,-shared,-Bsymbolic \
160 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
161 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
162 $(PRIVATE_ALL_OBJECTS) \
163 -Wl,--whole-archive \
164 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
165 -Wl,--no-whole-archive \
166 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
167 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
168 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
169 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
170 $(PRIVATE_TARGET_FDO_LIB) \
171 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
172 -o $@ \
173 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
174 $(PRIVATE_LDFLAGS) \
175 $(PRIVATE_TARGET_LIBGCC) \
176 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
177endef
178
179define transform-o-to-executable-inner
180$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
Ben Cheng98b8fdd2013-10-08 14:19:50 -0700181 -Wl,-dynamic-linker,/system/bin/linker64 \
Ben Cheng61546902014-04-09 15:56:47 -0700182 -Wl,--gc-sections \
Ben Chengdb4fc202013-10-04 16:02:59 -0700183 -Wl,-z,nocopyreloc \
184 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
Ying Wang9fb35262014-02-21 16:17:05 -0800185 -Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \
Ben Chengdb4fc202013-10-04 16:02:59 -0700186 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
187 $(PRIVATE_ALL_OBJECTS) \
188 -Wl,--whole-archive \
189 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
190 -Wl,--no-whole-archive \
191 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
192 $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
193 $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
194 $(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
195 $(PRIVATE_TARGET_FDO_LIB) \
196 $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
197 -o $@ \
198 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
199 $(PRIVATE_LDFLAGS) \
200 $(PRIVATE_TARGET_LIBGCC) \
201 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
202endef
203
204define transform-o-to-static-executable-inner
Ben Chenge61dea92013-10-25 09:33:22 -0700205$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
Ben Cheng61546902014-04-09 15:56:47 -0700206 -Wl,--gc-sections \
Ben Chengdb4fc202013-10-04 16:02:59 -0700207 -o $@ \
208 $(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
209 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
210 $(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
211 $(PRIVATE_LDFLAGS) \
212 $(PRIVATE_ALL_OBJECTS) \
213 -Wl,--whole-archive \
214 $(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
215 -Wl,--no-whole-archive \
216 $(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
217 -Wl,--start-group \
218 $(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
219 $(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
220 $(PRIVATE_TARGET_FDO_LIB) \
221 $(PRIVATE_TARGET_LIBGCC) \
222 -Wl,--end-group \
223 $(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
224endef