TARGET_linux-arm64.mk revision 50031de36ee77128b00e1ea77bcbb5a48628cfa3 
1#
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 $(TARGET_ARCH_VARIANT)),)
34TARGET_ARCH_VARIANT := armv8
35endif
36
37# Decouple NDK library selection with platform compiler version
38TARGET_NDK_GCC_VERSION := 4.8
39
40ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
41TARGET_GCC_VERSION := 4.9
42else
43TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
44endif
45
46TARGET_IS_64_BIT := true
47
48TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
49ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
50$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT))
51endif
52
53include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
54
55# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
56ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
57TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION)
58TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android-
59endif
60
61TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
62TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
63TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
64TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
65TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
66TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX)
67TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
68
69TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
70
71TARGET_GLOBAL_CFLAGS += \
72    -fno-strict-aliasing \
73
74android_config_h := $(call select-android-config-h,linux-arm64)
75
76TARGET_GLOBAL_CFLAGS += \
77			-fpic -fPIE \
78			-fstack-protector \
79			-ffunction-sections \
80			-fdata-sections \
81			-funwind-tables \
82			-Wa,--noexecstack \
83			-Werror=format-security \
84			-D_FORTIFY_SOURCE=2 \
85			-fno-short-enums \
86			-no-canonical-prefixes \
87			-fno-canonical-system-headers \
88			$(arch_variant_cflags) \
89			-include $(android_config_h) \
90			-I $(dir $(android_config_h))
91
92# Help catch common 32/64-bit errors.
93TARGET_GLOBAL_CFLAGS += \
94    -Werror=pointer-to-int-cast \
95    -Werror=int-to-pointer-cast \
96
97TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields
98
99# This is to avoid the dreaded warning compiler message:
100#   note: the mangling of 'va_list' has changed in GCC 4.4
101#
102# The fact that the mangling changed does not affect the NDK ABI
103# very fortunately (since none of the exposed APIs used va_list
104# in their exported C++ functions). Also, GCC 4.5 has already
105# removed the warning from the compiler.
106#
107TARGET_GLOBAL_CFLAGS += -Wno-psabi
108
109TARGET_GLOBAL_LDFLAGS += \
110			-Wl,-z,noexecstack \
111			-Wl,-z,relro \
112			-Wl,-z,now \
113			-Wl,--warn-shared-textrel \
114			-Wl,--fatal-warnings \
115			-Wl,-maarch64linux \
116			$(arch_variant_ldflags)
117
118TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
119
120# More flags/options can be added here
121TARGET_RELEASE_CFLAGS := \
122			-DNDEBUG \
123			-O2 -g \
124			-Wstrict-aliasing=2 \
125			-fgcse-after-reload \
126			-frerun-cse-after-loop \
127			-frename-registers
128
129libc_root := bionic/libc
130libm_root := bionic/libm
131libstdc++_root := bionic/libstdc++
132
133TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
134	-print-libgcc-file-name)
135TARGET_LIBATOMIC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
136	-print-file-name=libatomic.a)
137
138KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
139KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
140KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
141
142TARGET_C_INCLUDES := \
143	$(libc_root)/arch-arm64/include \
144	$(libc_root)/include \
145	$(libstdc++_root)/include \
146	$(KERNEL_HEADERS) \
147	$(libm_root)/include \
148	$(libm_root)/include/arm64 \
149
150TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
151TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
152TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
153
154TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
155TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
156
157TARGET_STRIP_MODULE:=true
158
159TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
160
161TARGET_CUSTOM_LD_COMMAND := true
162
163define transform-o-to-shared-lib-inner
164$(hide) $(PRIVATE_CXX) \
165	-nostdlib -Wl,-soname,$(notdir $@) \
166	-Wl,--gc-sections \
167	-shared \
168	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
169	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
170	$(PRIVATE_ALL_OBJECTS) \
171	-Wl,--whole-archive \
172	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
173	-Wl,--no-whole-archive \
174	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
175	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
176	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
177	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
178	$(PRIVATE_TARGET_FDO_LIB) \
179	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
180	-o $@ \
181	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
182	$(PRIVATE_LDFLAGS) \
183	$(PRIVATE_TARGET_LIBATOMIC) \
184	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
185	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \
186	$(PRIVATE_LDLIBS)
187endef
188
189define transform-o-to-executable-inner
190$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -fPIE -pie \
191	-Wl,-dynamic-linker,/system/bin/linker64 \
192	-Wl,--gc-sections \
193	-Wl,-z,nocopyreloc \
194	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
195	-Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \
196	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
197	$(PRIVATE_ALL_OBJECTS) \
198	-Wl,--whole-archive \
199	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
200	-Wl,--no-whole-archive \
201	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
202	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
203	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
204	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
205	$(PRIVATE_TARGET_FDO_LIB) \
206	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
207	-o $@ \
208	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
209	$(PRIVATE_LDFLAGS) \
210	$(PRIVATE_TARGET_LIBATOMIC) \
211	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
212	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \
213	$(PRIVATE_LDLIBS)
214endef
215
216define transform-o-to-static-executable-inner
217$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
218	-Wl,--gc-sections \
219	-o $@ \
220	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
221	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
222	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
223	$(PRIVATE_LDFLAGS) \
224	$(PRIVATE_ALL_OBJECTS) \
225	-Wl,--whole-archive \
226	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
227	-Wl,--no-whole-archive \
228	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
229	-Wl,--start-group \
230	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
231	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
232	$(PRIVATE_TARGET_FDO_LIB) \
233	$(PRIVATE_TARGET_LIBATOMIC) \
234	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
235	-Wl,--end-group \
236	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
237endef
238