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      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 builds hosted on linux-x86.
     18 # Included by combo/select.mk
     19 
     20 # $(1): The file to check
     21 define get-file-size
     22 stat --format "%s" "$(1)" | tr -d '\n'
     23 endef
     24 
     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 $(HOST_TOOLCHAIN_PREFIX)),)
     28 HOST_TOOLCHAIN_PREFIX := prebuilts/tools/gcc-sdk
     29 endif
     30 # Don't do anything if the toolchain is not there
     31 ifneq (,$(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 # $(HOST_TOOLCHAIN_PREFIX)/gcc exists
     36 
     37 ifneq ($(strip $(BUILD_HOST_64bit)),)
     38 # By default we build everything in 32-bit, because it gives us
     39 # more consistency between the host tools and the target.
     40 # BUILD_HOST_64bit=1 overrides it for tool like emulator
     41 # which can benefit from 64-bit host arch.
     42 HOST_GLOBAL_CFLAGS += -m64
     43 HOST_GLOBAL_LDFLAGS += -m64
     44 else
     45 # We expect SSE3 floating point math.
     46 HOST_GLOBAL_CFLAGS += -mstackrealign -msse3 -mfpmath=sse -m32
     47 HOST_GLOBAL_LDFLAGS += -m32
     48 endif # BUILD_HOST_64bit
     49 
     50 ifneq ($(strip $(BUILD_HOST_static)),)
     51 # Statically-linked binaries are desirable for sandboxed environment
     52 HOST_GLOBAL_LDFLAGS += -static
     53 endif # BUILD_HOST_static
     54 
     55 HOST_GLOBAL_CFLAGS += -fPIC \
     56     -include $(call select-android-config-h,linux-x86)
     57 
     58 # Disable new longjmp in glibc 2.11 and later. See bug 2967937.
     59 HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
     60 
     61 HOST_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
     62