2 # Copyright (C) 2006 The Android Open Source Project
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
8 # http://www.apache.org/licenses/LICENSE-2.0
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.
17 # Configuration for builds hosted on linux-x86.
18 # Included by combo/select.mk
20 # $(1): The file to check
22 stat --format "%s" "$(1)" | tr -d '\n'
25 # Previously the prebiult host toolchain is used only for the sdk build,
26 # that's why we have "sdk" in the path name.
27 ifeq ($(strip $(HOST_TOOLCHAIN_PREFIX)),)
28 HOST_TOOLCHAIN_PREFIX := prebuilts/tools/gcc-sdk
30 # Don't do anything if the toolchain is not there
31 ifneq (,$(strip $(wildcard $(HOST_TOOLCHAIN_PREFIX)/gcc)))
32 HOST_CC := $(HOST_TOOLCHAIN_PREFIX)/gcc
33 HOST_CXX := $(HOST_TOOLCHAIN_PREFIX)/g++
34 HOST_AR := $(HOST_TOOLCHAIN_PREFIX)/ar
35 endif # $(HOST_TOOLCHAIN_PREFIX)/gcc exists
37 ifneq ($(strip $(BUILD_HOST_64bit)),)
38 # By default we build everything in 32-bit, because it gives us
39 # more consistency between the host tools and the target.
40 # BUILD_HOST_64bit=1 overrides it for tool like emulator
41 # which can benefit from 64-bit host arch.
42 HOST_GLOBAL_CFLAGS += -m64
43 HOST_GLOBAL_LDFLAGS += -m64
45 # We expect SSE3 floating point math.
46 HOST_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32
47 HOST_GLOBAL_LDFLAGS += -m32
48 endif # BUILD_HOST_64bit
50 ifneq ($(strip $(BUILD_HOST_static)),)
51 # Statically-linked binaries are desirable for sandboxed environment
52 HOST_GLOBAL_LDFLAGS += -static
53 endif # BUILD_HOST_static
55 HOST_GLOBAL_CFLAGS += -fPIC \
56 -include $(call select-android-config-h,linux-x86)
58 # Disable new longjmp in glibc 2.11 and later. See bug 2967937.
59 HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
61 HOST_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined