TARGET_linux-arm64.mk revision e1b17e7ef5494ad074ed4856a756af8d2c5ea70d 
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_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
47ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
48$(error Unknown ARM architecture version: $(TARGET_ARCH_VARIANT))
49endif
50
51include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
52include $(BUILD_SYSTEM)/combo/fdo.mk
53
54# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
55ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
56TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/aarch64/aarch64-linux-android-$(TARGET_GCC_VERSION)
57TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/aarch64-linux-android-
58endif
59
60TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
61TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
62TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
63TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
64TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
65TARGET_READELF := $(TARGET_TOOLS_PREFIX)readelf$(HOST_EXECUTABLE_SUFFIX)
66TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
67
68TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
69
70TARGET_GLOBAL_CFLAGS += \
71    -fno-strict-aliasing \
72
73android_config_h := $(call select-android-config-h,linux-arm64)
74
75TARGET_GLOBAL_CFLAGS += \
76			-fstack-protector \
77			-ffunction-sections \
78			-fdata-sections \
79			-funwind-tables \
80			-Wa,--noexecstack \
81			-Werror=format-security \
82			-D_FORTIFY_SOURCE=2 \
83			-fno-short-enums \
84			-no-canonical-prefixes \
85			-fno-canonical-system-headers \
86			$(arch_variant_cflags) \
87			-include $(android_config_h) \
88			-I $(dir $(android_config_h))
89
90# Help catch common 32/64-bit errors.
91TARGET_GLOBAL_CFLAGS += \
92    -Werror=pointer-to-int-cast \
93    -Werror=int-to-pointer-cast \
94
95TARGET_GLOBAL_CFLAGS += -fno-strict-volatile-bitfields
96
97# This is to avoid the dreaded warning compiler message:
98#   note: the mangling of 'va_list' has changed in GCC 4.4
99#
100# The fact that the mangling changed does not affect the NDK ABI
101# very fortunately (since none of the exposed APIs used va_list
102# in their exported C++ functions). Also, GCC 4.5 has already
103# removed the warning from the compiler.
104#
105TARGET_GLOBAL_CFLAGS += -Wno-psabi
106
107TARGET_GLOBAL_LDFLAGS += \
108			-Wl,-z,noexecstack \
109			-Wl,-z,relro \
110			-Wl,-z,now \
111			-Wl,--warn-shared-textrel \
112			-Wl,--fatal-warnings \
113			-Wl,-maarch64linux \
114			$(arch_variant_ldflags)
115
116TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
117
118# More flags/options can be added here
119TARGET_RELEASE_CFLAGS := \
120			-DNDEBUG \
121			-O2 -g \
122			-Wstrict-aliasing=2 \
123			-fgcse-after-reload \
124			-frerun-cse-after-loop \
125			-frename-registers
126
127libc_root := bionic/libc
128libm_root := bionic/libm
129
130TARGET_LIBGCC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
131	-print-libgcc-file-name)
132TARGET_LIBATOMIC := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
133	-print-file-name=libatomic.a)
134TARGET_LIBGCOV := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
135	-print-file-name=libgcov.a)
136
137KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
138KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
139KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
140
141TARGET_C_INCLUDES := \
142	$(libc_root)/arch-arm64/include \
143	$(libc_root)/include \
144	$(KERNEL_HEADERS) \
145	$(libm_root)/include \
146	$(libm_root)/include/arm64 \
147
148TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
149TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
150TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
151
152TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
153TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
154
155TARGET_STRIP_MODULE:=true
156
157TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libm
158
159TARGET_CUSTOM_LD_COMMAND := true
160
161define transform-o-to-shared-lib-inner
162$(hide) $(PRIVATE_CXX) \
163	-nostdlib -Wl,-soname,$(notdir $@) \
164	-Wl,--gc-sections \
165	$(if $(filter true,$(PRIVATE_CLANG)),-shared,-Wl,-shared) \
166	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
167	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
168	$(PRIVATE_ALL_OBJECTS) \
169	-Wl,--whole-archive \
170	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
171	-Wl,--no-whole-archive \
172	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
173	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
174	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
175	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
176	$(PRIVATE_TARGET_FDO_LIB) \
177	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
178	-o $@ \
179	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
180	$(PRIVATE_LDFLAGS) \
181	$(PRIVATE_TARGET_LIBATOMIC) \
182	$(if $(filter true,$(NATIVE_COVERAGE)),$(PRIVATE_TARGET_LIBGCOV)) \
183	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
184	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \
185	$(PRIVATE_LDLIBS)
186endef
187
188define transform-o-to-executable-inner
189$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -pie \
190	-Wl,-dynamic-linker,/system/bin/linker64 \
191	-Wl,--gc-sections \
192	-Wl,-z,nocopyreloc \
193	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
194	-Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \
195	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
196	$(PRIVATE_ALL_OBJECTS) \
197	-Wl,--whole-archive \
198	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
199	-Wl,--no-whole-archive \
200	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
201	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
202	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
203	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
204	$(PRIVATE_TARGET_FDO_LIB) \
205	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
206	-o $@ \
207	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
208	$(PRIVATE_LDFLAGS) \
209	$(PRIVATE_TARGET_LIBATOMIC) \
210	$(if $(filter true,$(NATIVE_COVERAGE)),$(PRIVATE_TARGET_LIBGCOV)) \
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 %libcompiler_rt.a,$(filter-out %libc_nomalloc.a,$(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 $(filter true,$(NATIVE_COVERAGE)),$(PRIVATE_TARGET_LIBGCOV)) \
235	$(call normalize-target-libraries,$(filter %libcompiler_rt.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
236	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
237	-Wl,--end-group \
238	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
239endef
240