TARGET_linux-mips64.mk revision 10326b3d7f1966381812ef55478619f714917c23 
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 MIPS64.
18# Included by combo/select.mk
19
20# You can set TARGET_ARCH_VARIANT to use an arch version other
21# than mips64. 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 $(TARGET_ARCH_VARIANT)),)
34TARGET_ARCH_VARIANT := mips64r6
35endif
36
37# Decouple NDK library selection with platform compiler version
38TARGET_NDK_GCC_VERSION := 4.8
39
40ifeq ($(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 MIPS architecture variant: $(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)/mips/mips64el-linux-android-$(TARGET_GCC_VERSION)
57TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mips64el-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_mips_CFLAGS :=	-O2 \
71			-fomit-frame-pointer \
72			-fno-strict-aliasing    \
73			-funswitch-loops
74
75# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
76# or in your environment to gdb debugging easier.
77# Don't forget to do a clean build.
78ifeq ($(FORCE_MIPS_DEBUGGING),true)
79  TARGET_mips_CFLAGS += -fno-omit-frame-pointer
80endif
81
82android_config_h := $(call select-android-config-h,linux-mips64)
83
84TARGET_GLOBAL_CFLAGS += \
85			$(TARGET_mips_CFLAGS) \
86			-U__unix -U__unix__ -Umips \
87			-ffunction-sections \
88			-fdata-sections \
89			-funwind-tables \
90			-Wa,--noexecstack \
91			-Werror=format-security \
92			-D_FORTIFY_SOURCE=2 \
93			-no-canonical-prefixes \
94			-fno-canonical-system-headers \
95			$(arch_variant_cflags) \
96			-include $(android_config_h) \
97			-I $(dir $(android_config_h))
98
99ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
100TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
101endif
102
103TARGET_GLOBAL_LDFLAGS += \
104			-Wl,-z,noexecstack \
105			-Wl,-z,relro \
106			-Wl,-z,now \
107			-Wl,--warn-shared-textrel \
108			-Wl,--fatal-warnings \
109			$(arch_variant_ldflags)
110
111TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden
112
113# More flags/options can be added here
114TARGET_RELEASE_CFLAGS := \
115			-DNDEBUG \
116			-g \
117			-Wstrict-aliasing=2 \
118			-fgcse-after-reload \
119			-frerun-cse-after-loop \
120			-frename-registers
121
122libc_root := bionic/libc
123libm_root := bionic/libm
124libstdc++_root := bionic/libstdc++
125libthread_db_root := bionic/libthread_db
126
127
128## on some hosts, the target cross-compiler is not available so do not run this command
129ifneq ($(wildcard $(TARGET_CC)),)
130# We compile with the global cflags to ensure that
131# any flags which affect libgcc are correctly taken
132# into account.
133TARGET_LIBGCC := \
134  $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
135TARGET_LIBATOMIC := \
136  $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libatomic.a)
137LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
138ifneq ($(LIBGCC_EH),libgcc_eh.a)
139  TARGET_LIBGCC += $(LIBGCC_EH)
140endif
141target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
142        --print-file-name=libgcov.a)
143endif
144
145KERNEL_HEADERS_COMMON := $(libc_root)/kernel/uapi
146KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/uapi/asm-mips
147# TODO: perhaps use $(libc_root)/kernel/uapi/asm-$(TARGET_ARCH) instead of asm-mips ?
148KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
149
150TARGET_C_INCLUDES := \
151	$(libc_root)/arch-mips64/include \
152	$(libc_root)/include \
153	$(libstdc++_root)/include \
154	$(KERNEL_HEADERS) \
155	$(libm_root)/include \
156	$(libm_root)/include/mips \
157	$(libthread_db_root)/include
158# TODO: perhaps use $(libm_root)/include/mips64 instead of mips ?
159
160TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
161TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
162TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
163
164TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
165TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
166
167TARGET_STRIP_MODULE:=true
168
169TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
170
171TARGET_CUSTOM_LD_COMMAND := true
172
173define transform-o-to-shared-lib-inner
174$(hide) $(PRIVATE_CXX) \
175	-nostdlib -Wl,-soname,$(notdir $@) \
176	-Wl,--gc-sections \
177	$(if $(filter true,$(PRIVATE_CLANG)),-shared,-Wl,-shared) \
178	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
179	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
180	$(PRIVATE_ALL_OBJECTS) \
181	-Wl,--whole-archive \
182	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
183	-Wl,--no-whole-archive \
184	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
185	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
186	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
187	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
188	$(PRIVATE_TARGET_FDO_LIB) \
189	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
190	-o $@ \
191	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
192	$(PRIVATE_LDFLAGS) \
193	$(PRIVATE_TARGET_LIBATOMIC) \
194	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
195	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \
196	$(PRIVATE_LDLIBS)
197endef
198
199define transform-o-to-executable-inner
200$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -pie \
201	-Wl,-dynamic-linker,/system/bin/linker64 \
202	-Wl,--gc-sections \
203	-Wl,-z,nocopyreloc \
204	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
205	-Wl,-rpath-link=$(PRIVATE_TARGET_OUT_INTERMEDIATE_LIBRARIES) \
206	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
207	$(PRIVATE_ALL_OBJECTS) \
208	-Wl,--whole-archive \
209	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
210	-Wl,--no-whole-archive \
211	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
212	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
213	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
214	$(if $(TARGET_BUILD_APPS),$(PRIVATE_TARGET_LIBGCC)) \
215	$(PRIVATE_TARGET_FDO_LIB) \
216	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
217	-o $@ \
218	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
219	$(PRIVATE_LDFLAGS) \
220	$(PRIVATE_TARGET_LIBATOMIC) \
221	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
222	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \
223	$(PRIVATE_LDLIBS)
224endef
225
226define transform-o-to-static-executable-inner
227$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
228	-Wl,--gc-sections \
229	-o $@ \
230	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
231	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
232	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
233	$(PRIVATE_LDFLAGS) \
234	$(PRIVATE_ALL_OBJECTS) \
235	-Wl,--whole-archive \
236	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
237	-Wl,--no-whole-archive \
238	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
239	-Wl,--start-group \
240	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
241	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
242	$(PRIVATE_TARGET_FDO_LIB) \
243	$(PRIVATE_TARGET_LIBATOMIC) \
244	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
245	-Wl,--end-group \
246	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
247endef
248