TARGET_linux-x86.mk revision e1d44c3b4acef1319c34514e8d4ee78127b895ef 
1#
2# Copyright (C) 2006 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 x86 as a target.
18# Included by combo/select.mk
19
20# Provide a default variant.
21ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
22TARGET_ARCH_VARIANT := x86
23endif
24
25ifeq ($(strip $(TARGET_GCC_VERSION_EXP)),)
26TARGET_GCC_VERSION := 4.8
27else
28TARGET_GCC_VERSION := $(TARGET_GCC_VERSION_EXP)
29endif
30
31# Include the arch-variant-specific configuration file.
32# Its role is to define various ARCH_X86_HAVE_XXX feature macros,
33# plus initial values for TARGET_GLOBAL_CFLAGS
34#
35TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
36ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
37$(error Unknown $(TARGET_ARCH) architecture version: $(TARGET_ARCH_VARIANT))
38endif
39
40include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
41
42
43# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
44ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
45TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/x86/x86_64-linux-android-$(TARGET_GCC_VERSION)
46TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/x86_64-linux-android-
47endif
48
49TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
50TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
51TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
52TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
53TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
54TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
55
56ifeq ($(TARGET_BUILD_VARIANT),user)
57TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-debug $< -o $@
58else
59TARGET_STRIP_COMMAND = $(PRIVATE_STRIP) --strip-debug $< -o $@ && \
60    $(PRIVATE_OBJCOPY) --add-gnu-debuglink=$< $@
61endif
62
63ifneq ($(wildcard $(TARGET_CC)),)
64TARGET_LIBGCC := \
65	$(shell $(TARGET_CC) -m32 -print-file-name=libgcc.a)
66target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
67	-print-file-name=libgcov.a)
68endif
69
70TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
71
72libc_root := bionic/libc
73libm_root := bionic/libm
74libstdc++_root := bionic/libstdc++
75libthread_db_root := bionic/libthread_db
76
77# Define FDO (Feedback Directed Optimization) options.
78
79TARGET_FDO_CFLAGS:=
80TARGET_FDO_LIB:=
81
82ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
83  # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
84  # The profile will be generated on /data/local/tmp/profile on the device.
85  TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
86  TARGET_FDO_LIB := $(target_libgcov)
87else
88  # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
89  # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
90  ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
91    TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
92  else
93    ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
94      $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
95    endif
96  endif
97
98  # If the FDO profile directory can't be found, then FDO is off.
99  ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
100    TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
101    TARGET_FDO_LIB := $(target_libgcov)
102  endif
103endif
104
105KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
106KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH)
107KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
108
109android_config_h := $(call select-android-config-h,target_linux-x86)
110
111TARGET_GLOBAL_CFLAGS += \
112			-O2 \
113			-Ulinux \
114			-Wa,--noexecstack \
115			-Werror=format-security \
116			-D_FORTIFY_SOURCE=2 \
117			-Wstrict-aliasing=2 \
118			-fPIC -fPIE \
119			-ffunction-sections \
120			-finline-functions \
121			-finline-limit=300 \
122			-fno-inline-functions-called-once \
123			-fno-short-enums \
124			-fstrict-aliasing \
125			-funswitch-loops \
126			-funwind-tables \
127			-fstack-protector \
128			-m32 \
129			-include $(android_config_h) \
130			-I $(dir $(android_config_h))
131
132TARGET_GLOBAL_CFLAGS += $(arch_variant_cflags)
133
134ifeq ($(ARCH_X86_HAVE_SSSE3),true)   # yes, really SSSE3, not SSE3!
135    TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 -mssse3
136endif
137ifeq ($(ARCH_X86_HAVE_SSE4),true)
138    TARGET_GLOBAL_CFLAGS += -msse4
139endif
140ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
141    TARGET_GLOBAL_CFLAGS += -msse4.1
142endif
143ifeq ($(ARCH_X86_HAVE_SSE4_2),true)
144    TARGET_GLOBAL_CFLAGS += -msse4.2
145endif
146ifeq ($(ARCH_X86_HAVE_AVX),true)
147    TARGET_GLOBAL_CFLAGS += -mavx
148endif
149ifeq ($(ARCH_X86_HAVE_AES_NI),true)
150    TARGET_GLOBAL_CFLAGS += -maes
151endif
152
153TARGET_GLOBAL_LDFLAGS += -m32
154
155TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack
156TARGET_GLOBAL_LDFLAGS += -Wl,-z,relro -Wl,-z,now
157TARGET_GLOBAL_LDFLAGS += -Wl,--warn-shared-textrel
158TARGET_GLOBAL_LDFLAGS += -Wl,--fatal-warnings
159TARGET_GLOBAL_LDFLAGS += -Wl,--gc-sections
160
161TARGET_C_INCLUDES := \
162	$(libc_root)/arch-x86/include \
163	$(libc_root)/include \
164	$(libstdc++_root)/include \
165	$(KERNEL_HEADERS) \
166	$(libm_root)/include \
167	$(libm_root)/include/i387 \
168	$(libthread_db_root)/include
169
170TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
171TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
172TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
173
174TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
175TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
176
177TARGET_STRIP_MODULE:=true
178
179TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
180
181TARGET_CUSTOM_LD_COMMAND := true
182define transform-o-to-shared-lib-inner
183$(hide) $(PRIVATE_CXX) \
184	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
185	 -nostdlib -Wl,-soname,$(notdir $@) \
186	 -shared -Bsymbolic \
187	$(TARGET_GLOBAL_CFLAGS) \
188	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
189	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
190	$(PRIVATE_ALL_OBJECTS) \
191	-Wl,--whole-archive \
192	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
193	-Wl,--no-whole-archive \
194	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
195	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
196	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
197	$(PRIVATE_TARGET_LIBGCC) \
198	$(PRIVATE_TARGET_FDO_LIB) \
199	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
200	-o $@ \
201	$(PRIVATE_LDFLAGS) \
202	$(PRIVATE_TARGET_LIBGCC) \
203	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
204endef
205
206define transform-o-to-executable-inner
207$(hide) $(PRIVATE_CXX) \
208	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
209	-nostdlib -Bdynamic \
210	-Wl,-z,nocopyreloc \
211	-fPIE -pie \
212	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
213	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
214	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
215	$(PRIVATE_ALL_OBJECTS) \
216	-Wl,--whole-archive \
217	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
218	-Wl,--no-whole-archive \
219	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
220	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
221	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
222	$(PRIVATE_TARGET_LIBGCC) \
223	$(PRIVATE_TARGET_FDO_LIB) \
224	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
225	-o $@ \
226	$(PRIVATE_LDFLAGS) \
227	$(PRIVATE_TARGET_LIBGCC) \
228	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
229endef
230
231define transform-o-to-static-executable-inner
232$(hide) $(PRIVATE_CXX) \
233	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
234	-nostdlib -Bstatic \
235	-o $@ \
236	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
237	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
238	$(PRIVATE_LDFLAGS) \
239	$(PRIVATE_ALL_OBJECTS) \
240	-Wl,--whole-archive \
241	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
242	-Wl,--no-whole-archive \
243	-Wl,--start-group \
244	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
245	$(PRIVATE_TARGET_FDO_LIB) \
246	$(PRIVATE_TARGET_LIBGCC) \
247	-Wl,--end-group \
248	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
249endef
250