TARGET_linux-mips.mk revision c6ffc00b9fa7898564139558a025d865bac37a38 
1#
2# Copyright (C) 2010 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 MIPS.
18# Included by combo/select.mk
19
20# You can set TARGET_ARCH_VARIANT to use an arch version other
21# than mips32r2-fp. 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 := mips32r2-fp
35endif
36
37TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
38ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
39$(error Unknown MIPS architecture variant: $(TARGET_ARCH_VARIANT))
40endif
41
42include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
43
44# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
45ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
46TARGET_TOOLCHAIN_ROOT := prebuilts/gcc/$(HOST_PREBUILT_TAG)/mips/mipsel-linux-android-4.6
47TARGET_TOOLS_PREFIX := $(TARGET_TOOLCHAIN_ROOT)/bin/mipsel-linux-android-
48endif
49
50# Only define these if there's actually a gcc in there.
51# The gcc toolchain does not exists for windows/cygwin. In this case, do not reference it.
52ifneq ($(wildcard $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)),)
53    TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
54    TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
55    TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
56    TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
57    TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
58    TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
59    ifeq ($(TARGET_BUILD_VARIANT),user)
60        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
61    else
62        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \
63            $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
64    endif
65endif
66
67TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
68
69TARGET_mips_CFLAGS :=	-O2 \
70			-fomit-frame-pointer \
71			-fno-strict-aliasing    \
72			-funswitch-loops
73
74# Set FORCE_MIPS_DEBUGGING to "true" in your buildspec.mk
75# or in your environment to gdb debugging easier.
76# Don't forget to do a clean build.
77ifeq ($(FORCE_MIPS_DEBUGGING),true)
78  TARGET_mips_CFLAGS += -fno-omit-frame-pointer
79endif
80
81TARGET_GLOBAL_CFLAGS += \
82			$(TARGET_mips_CFLAGS) \
83			-Ulinux -U__unix -U__unix__ -Umips \
84			-fpic \
85			-ffunction-sections \
86			-fdata-sections \
87			-funwind-tables \
88			-Werror=format-security \
89			$(arch_variant_cflags)
90
91android_config_h := $(call select-android-config-h,linux-mips)
92TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
93TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)
94
95# This warning causes dalvik not to build with gcc 4.6.x and -Werror.
96# We cannot turn it off blindly since the option is not available
97# in gcc-4.4.x.
98ifneq ($(filter 4.6 4.6.%, $(shell $(TARGET_CC) --version)),)
99TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable \
100                        -fno-strict-volatile-bitfields
101endif
102
103# This is to avoid the dreaded warning compiler message:
104#   note: the mangling of 'va_list' has changed in GCC 4.4
105#
106# The fact that the mangling changed does not affect the NDK ABI
107# very fortunately (since none of the exposed APIs used va_list
108# in their exported C++ functions). Also, GCC 4.5 has already
109# removed the warning from the compiler.
110#
111TARGET_GLOBAL_CFLAGS += -Wno-psabi
112
113ifneq ($(ARCH_MIPS_PAGE_SHIFT),)
114TARGET_GLOBAL_CFLAGS += -DPAGE_SHIFT=$(ARCH_MIPS_PAGE_SHIFT)
115endif
116
117TARGET_GLOBAL_LDFLAGS += \
118			$(arch_variant_ldflags)
119
120TARGET_GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden \
121				-fno-use-cxa-atexit
122
123# More flags/options can be added here
124TARGET_RELEASE_CFLAGS := \
125			-DNDEBUG \
126			-g \
127			-Wstrict-aliasing=2 \
128			-fgcse-after-reload \
129			-frerun-cse-after-loop \
130			-frename-registers
131
132libc_root := bionic/libc
133libm_root := bionic/libm
134libstdc++_root := bionic/libstdc++
135libthread_db_root := bionic/libthread_db
136
137
138## on some hosts, the target cross-compiler is not available so do not run this command
139ifneq ($(wildcard $(TARGET_CC)),)
140# We compile with the global cflags to ensure that
141# any flags which affect libgcc are correctly taken
142# into account.
143TARGET_LIBGCC := \
144  $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc.a)
145LIBGCC_EH := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) -print-file-name=libgcc_eh.a)
146ifneq ($(LIBGCC_EH),libgcc_eh.a)
147  TARGET_LIBGCC += $(LIBGCC_EH)
148endif
149endif
150
151# Define FDO (Feedback Directed Optimization) options.
152
153TARGET_FDO_CFLAGS:=
154TARGET_FDO_LIB:=
155
156target_libgcov := $(shell $(TARGET_CC) $(TARGET_GLOBAL_CFLAGS) \
157        --print-file-name=libgcov.a)
158ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)
159  # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
160  # The profile will be generated on /data/local/tmp/profile on the device.
161  TARGET_FDO_CFLAGS := -fprofile-generate=/data/local/tmp/profile -DANDROID_FDO
162  TARGET_FDO_LIB := $(target_libgcov)
163else
164  # If BUILD_FDO_INSTRUMENT is turned off, then consider doing the FDO optimizations.
165  # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.
166  ifeq ($(strip $(TARGET_FDO_PROFILE_PATH)),)
167    TARGET_FDO_PROFILE_PATH := fdo/profiles/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT)
168  else
169    ifeq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
170      $(warning Custom TARGET_FDO_PROFILE_PATH supplied, but directory does not exist. Turn off FDO.)
171    endif
172  endif
173
174  # If the FDO profile directory can't be found, then FDO is off.
175  ifneq ($(strip $(wildcard $(TARGET_FDO_PROFILE_PATH))),)
176    TARGET_FDO_CFLAGS := -fprofile-use=$(TARGET_FDO_PROFILE_PATH) -DANDROID_FDO
177    TARGET_FDO_LIB := $(target_libgcov)
178  endif
179endif
180
181
182# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
183# symlinks located in out/ to point to the appropriate kernel
184# headers. see 'config/kernel_headers.make' for more details
185#
186ifneq ($(CUSTOM_KERNEL_HEADERS),)
187    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
188    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
189else
190    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common
191    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/arch-$(TARGET_ARCH)
192endif
193KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
194
195TARGET_C_INCLUDES := \
196	$(libc_root)/arch-mips/include \
197	$(libc_root)/include \
198	$(libstdc++_root)/include \
199	$(KERNEL_HEADERS) \
200	$(libm_root)/include \
201	$(libm_root)/include/mips \
202	$(libthread_db_root)/include
203
204TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
205TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
206TARGET_CRTEND_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
207
208TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
209TARGET_CRTEND_SO_O := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
210
211TARGET_STRIP_MODULE:=true
212
213TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
214
215TARGET_CUSTOM_LD_COMMAND := true
216
217# Enable the Dalvik JIT compiler if not already specified.
218ifeq ($(strip $(WITH_JIT)),)
219    WITH_JIT := true
220endif
221
222define transform-o-to-shared-lib-inner
223$(hide) $(PRIVATE_CXX) \
224	-nostdlib -Wl,-soname,$(notdir $@) \
225	-Wl,--gc-sections \
226	-shared -Bsymbolic \
227	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
228	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
229	$(PRIVATE_ALL_OBJECTS) \
230	-Wl,--whole-archive \
231	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
232	-Wl,--no-whole-archive \
233	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
234	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
235	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
236	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
237	-o $@ \
238	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
239	$(PRIVATE_LDFLAGS) \
240	$(PRIVATE_TARGET_FDO_LIB) \
241	$(PRIVATE_TARGET_LIBGCC) \
242	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
243endef
244
245define transform-o-to-executable-inner
246$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic \
247	-Wl,-dynamic-linker,/system/bin/linker \
248	-Wl,--gc-sections \
249	-Wl,-z,nocopyreloc \
250	-o $@ \
251	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
252	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
253	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
254	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O)) \
255	$(PRIVATE_ALL_OBJECTS) \
256	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
257	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
258	$(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \
259	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
260	$(PRIVATE_LDFLAGS) \
261	$(PRIVATE_TARGET_FDO_LIB) \
262	$(PRIVATE_TARGET_LIBGCC) \
263	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
264endef
265
266define transform-o-to-static-executable-inner
267$(hide) $(PRIVATE_CXX) -nostdlib -Bstatic \
268	-Wl,--gc-sections \
269	-o $@ \
270	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
271	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_STATIC_O)) \
272	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
273	$(PRIVATE_LDFLAGS) \
274	$(PRIVATE_ALL_OBJECTS) \
275	$(call normalize-target-libraries,$(filter-out %libc_nomalloc.a,$(filter-out %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES)))) \
276	-Wl,--start-group \
277	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
278	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
279	$(PRIVATE_TARGET_FDO_LIB) \
280	$(PRIVATE_TARGET_LIBGCC) \
281	-Wl,--end-group \
282	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
283endef
284