TARGET_linux-x86.mk revision 9b4a81237be29b0aae50d1e370b63a07ea2b88b9 
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
20ifeq ($(TARGET_SIMULATOR),true)
21# When building for the simulator, use the HOST settings as TARGET settings
22TARGET_CC := $(HOST_CC)
23TARGET_CXX := $(HOST_CXX)
24TARGET_AR := $(HOST_AR)
25TARGET_GLOBAL_CFLAGS := $(HOST_GLOBAL_CFLAGS)
26TARGET_GLOBAL_LDFLAGS := $(HOST_GLOBAL_LDFLAGS)
27TARGET_NO_UNDEFINED_LDFLAGS := $(HOST_NO_UNDEFINED_LDFLAGS)
28else #simulator
29
30# Provide a default variant.
31ifeq ($(strip $(TARGET_ARCH_VARIANT)),)
32TARGET_ARCH_VARIANT := x86
33endif
34
35# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else
36ifeq ($(strip $(TARGET_TOOLS_PREFIX)),)
37TARGET_TOOLS_PREFIX := \
38	prebuilt/$(HOST_PREBUILT_TAG)/toolchain/i686-unknown-linux-gnu-4.2.1/bin/i686-unknown-linux-gnu-
39endif
40
41TARGET_CC := $(TARGET_TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX)
42TARGET_CXX := $(TARGET_TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX)
43TARGET_AR := $(TARGET_TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX)
44TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
45TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
46
47ifneq ($(wildcard $(TARGET_CC)),)
48TARGET_LIBGCC := \
49	$(shell $(TARGET_CC) -m32 -print-file-name=libgcc.a) \
50        $(shell $(TARGET_CC) -m32 -print-file-name=libgcc_eh.a)
51endif
52
53TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
54
55libc_root := bionic/libc
56libm_root := bionic/libm
57libstdc++_root := bionic/libstdc++
58libthread_db_root := bionic/libthread_db
59
60# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use
61# symlinks located in out/ to point to the appropriate kernel
62# headers. see 'config/kernel_headers.make' for more details
63#
64ifneq ($(CUSTOM_KERNEL_HEADERS),)
65    KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS)
66    KERNEL_HEADERS_ARCH   := $(CUSTOM_KERNEL_HEADERS)
67else
68    KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common
69    KERNEL_HEADERS_ARCH   := $(libc_root)/kernel/arch-$(TARGET_ARCH)
70endif
71KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH)
72
73TARGET_GLOBAL_CFLAGS += \
74			-march=i686 \
75			-m32 \
76			-fPIC \
77			-include $(call select-android-config-h,target_linux-x86)
78
79TARGET_GLOBAL_CPPFLAGS += \
80			-fno-use-cxa-atexit
81
82TARGET_C_INCLUDES := \
83	$(libc_root)/arch-x86/include \
84	$(libc_root)/include \
85	$(libstdc++_root)/include \
86	$(KERNEL_HEADERS) \
87	$(libm_root)/include \
88	$(libm_root)/include/i387 \
89	$(libthread_db_root)/include
90
91TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o
92TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o
93TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o
94
95
96TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o
97TARGET_CRTEND_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o
98
99# TARGET_STRIP_MODULE:=true
100
101TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm
102
103TARGET_CUSTOM_LD_COMMAND := true
104define transform-o-to-shared-lib-inner
105$(TARGET_CXX) \
106	$(TARGET_GLOBAL_LDFLAGS) \
107	 -nostdlib -Wl,-soname,$(notdir $@) \
108	 -shared -Bsymbolic \
109	-fPIC -march=i686 \
110	$(TARGET_GLOBAL_LD_DIRS) \
111	$(TARGET_CRTBEGIN_SO_O) \
112	$(PRIVATE_ALL_OBJECTS) \
113	-Wl,--whole-archive \
114	$(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
115	-Wl,--no-whole-archive \
116	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
117	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
118	-o $@ \
119	$(PRIVATE_LDFLAGS) \
120	$(TARGET_LIBGCC) \
121	$(TARGET_CRTEND_SO_O)
122endef
123
124
125define transform-o-to-executable-inner
126$(TARGET_CXX) \
127	$(TARGET_GLOBAL_LDFLAGS) \
128	-nostdlib -Bdynamic \
129	-Wl,-dynamic-linker,/system/bin/linker \
130	-Wl,-z,nocopyreloc \
131	-o $@ \
132	$(TARGET_GLOBAL_LD_DIRS) \
133	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
134	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
135	$(TARGET_CRTBEGIN_DYNAMIC_O) \
136	$(PRIVATE_ALL_OBJECTS) \
137	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
138	$(PRIVATE_LDFLAGS) \
139	$(TARGET_LIBGCC) \
140	$(TARGET_CRTEND_O)
141endef
142
143define transform-o-to-static-executable-inner
144$(TARGET_CXX) \
145	$(TARGET_GLOBAL_LDFLAGS) \
146	-nostdlib -Bstatic \
147	-o $@ \
148	$(TARGET_GLOBAL_LD_DIRS) \
149	$(TARGET_CRTBEGIN_STATIC_O) \
150	$(PRIVATE_LDFLAGS) \
151	$(PRIVATE_ALL_OBJECTS) \
152	-Wl,--start-group \
153	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
154	$(TARGET_LIBGCC) \
155	-Wl,--end-group \
156	$(TARGET_CRTEND_O)
157endef
158
159TARGET_GLOBAL_CFLAGS += -m32
160TARGET_GLOBAL_LDFLAGS += -m32
161
162endif #simulator
163