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      1 # Copyright (C) 2009 The Android Open Source Project
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #      http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 #
     15 
     16 # this file is used to prepare the NDK to build with the arm clang-3.3
     17 # toolchain any number of source files
     18 #
     19 # its purpose is to define (or re-define) templates used to build
     20 # various sources into target object files, libraries or executables.
     21 #
     22 # Note that this file may end up being parsed several times in future
     23 # revisions of the NDK.
     24 #
     25 
     26 #
     27 # Override the toolchain prefix
     28 #
     29 
     30 LLVM_VERSION := 3.3
     31 LLVM_NAME := llvm-$(LLVM_VERSION)
     32 LLVM_TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(LLVM_NAME)
     33 LLVM_TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(LLVM_TOOLCHAIN_ROOT))
     34 LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/
     35 
     36 TOOLCHAIN_VERSION := 4.8
     37 TOOLCHAIN_NAME := arm-linux-androideabi-$(TOOLCHAIN_VERSION)
     38 TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(TOOLCHAIN_NAME)
     39 TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(TOOLCHAIN_ROOT))
     40 TOOLCHAIN_PREFIX := $(TOOLCHAIN_PREBUILT_ROOT)/bin/arm-linux-androideabi-
     41 
     42 TARGET_CC := $(LLVM_TOOLCHAIN_PREFIX)clang$(HOST_EXEEXT)
     43 TARGET_CXX := $(LLVM_TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
     44 
     45 #
     46 # CFLAGS and LDFLAGS
     47 #
     48 
     49 TARGET_CFLAGS := \
     50     -gcc-toolchain $(call host-path,$(TOOLCHAIN_PREBUILT_ROOT)) \
     51     -fpic \
     52     -ffunction-sections \
     53     -funwind-tables \
     54     -fstack-protector \
     55     -no-canonical-prefixes
     56 
     57 TARGET_LDFLAGS += \
     58     -gcc-toolchain $(call host-path,$(TOOLCHAIN_PREBUILT_ROOT)) \
     59     -no-canonical-prefixes
     60 
     61 TARGET_C_INCLUDES := \
     62     $(SYSROOT_INC)/usr/include
     63 
     64 ifneq ($(filter %armeabi-v7a,$(TARGET_ARCH_ABI)),)
     65     LLVM_TRIPLE := armv7-none-linux-androideabi
     66 
     67     TARGET_CFLAGS += -target $(LLVM_TRIPLE) \
     68                      -march=armv7-a \
     69                      -mfloat-abi=softfp \
     70                      -mfpu=vfpv3-d16
     71 
     72     TARGET_LDFLAGS += -target $(LLVM_TRIPLE) \
     73                       -Wl,--fix-cortex-a8
     74 else
     75     LLVM_TRIPLE := armv5te-none-linux-androideabi
     76 
     77     TARGET_CFLAGS += -target $(LLVM_TRIPLE) \
     78                      -march=armv5te \
     79                      -mtune=xscale \
     80                      -msoft-float
     81 
     82     TARGET_LDFLAGS += -target $(LLVM_TRIPLE)
     83 endif
     84 
     85 TARGET_CFLAGS.neon := -mfpu=neon
     86 
     87 TARGET_arm_release_CFLAGS :=  -O2 \
     88                               -g \
     89                               -DNDEBUG \
     90                               -fomit-frame-pointer \
     91                               -fstrict-aliasing
     92 
     93 TARGET_thumb_release_CFLAGS := -mthumb \
     94                                -Os \
     95                                -g \
     96                                -DNDEBUG \
     97                                -fomit-frame-pointer \
     98                                -fno-strict-aliasing
     99 
    100 # When building for debug, compile everything as arm.
    101 TARGET_arm_debug_CFLAGS := $(TARGET_arm_release_CFLAGS) \
    102                            -O0 \
    103                            -UNDEBUG \
    104                            -fno-omit-frame-pointer \
    105                            -fno-strict-aliasing
    106 
    107 TARGET_thumb_debug_CFLAGS := $(TARGET_thumb_release_CFLAGS) \
    108                              -O0 \
    109                              -UNDEBUG \
    110                              -marm \
    111                              -fno-omit-frame-pointer
    112 
    113 # This function will be called to determine the target CFLAGS used to build
    114 # a C or Assembler source file, based on its tags.
    115 #
    116 TARGET-process-src-files-tags = \
    117 $(eval __arm_sources := $(call get-src-files-with-tag,arm)) \
    118 $(eval __thumb_sources := $(call get-src-files-without-tag,arm)) \
    119 $(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
    120 $(eval __release_sources := $(call get-src-files-without-tag,debug)) \
    121 $(call set-src-files-target-cflags, \
    122     $(call set_intersection,$(__arm_sources),$(__debug_sources)), \
    123     $(TARGET_arm_debug_CFLAGS)) \
    124 $(call set-src-files-target-cflags,\
    125     $(call set_intersection,$(__arm_sources),$(__release_sources)),\
    126     $(TARGET_arm_release_CFLAGS)) \
    127 $(call set-src-files-target-cflags,\
    128     $(call set_intersection,$(__arm_sources),$(__debug_sources)),\
    129     $(TARGET_arm_debug_CFLAGS)) \
    130 $(call set-src-files-target-cflags,\
    131     $(call set_intersection,$(__thumb_sources),$(__release_sources)),\
    132     $(TARGET_thumb_release_CFLAGS)) \
    133 $(call set-src-files-target-cflags,\
    134     $(call set_intersection,$(__thumb_sources),$(__debug_sources)),\
    135     $(TARGET_thumb_debug_CFLAGS)) \
    136 $(call add-src-files-target-cflags,\
    137     $(call get-src-files-with-tag,neon),\
    138     $(TARGET_CFLAGS.neon)) \
    139 $(call set-src-files-text,$(__arm_sources),arm$(space)$(space)) \
    140 $(call set-src-files-text,$(__thumb_sources),thumb)
    141