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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 gcc-4.7
     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 TARGET_CFLAGS := \
     27     -fpic \
     28     -ffunction-sections \
     29     -funwind-tables \
     30     -fstack-protector \
     31     -no-canonical-prefixes
     32 
     33 TARGET_LDFLAGS := -no-canonical-prefixes
     34 
     35 TARGET_C_INCLUDES := \
     36     $(SYSROOT_INC)/usr/include
     37 
     38 ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
     39     TARGET_CFLAGS += -march=armv7-a \
     40                      -mfloat-abi=softfp \
     41                      -mfpu=vfpv3-d16
     42 
     43     TARGET_LDFLAGS += -march=armv7-a \
     44                      -Wl,--fix-cortex-a8
     45 else
     46     TARGET_CFLAGS += -march=armv5te \
     47                             -mtune=xscale \
     48                             -msoft-float
     49 endif
     50 
     51 TARGET_CFLAGS.neon := -mfpu=neon
     52 
     53 TARGET_arm_release_CFLAGS :=  -O2 \
     54                               -g \
     55                               -DNDEBUG \
     56                               -fomit-frame-pointer \
     57                               -fstrict-aliasing    \
     58                               -funswitch-loops     \
     59                               -finline-limit=300
     60 
     61 TARGET_thumb_release_CFLAGS := -mthumb \
     62                                -Os \
     63                                -g \
     64                                -DNDEBUG \
     65                                -fomit-frame-pointer \
     66                                -fno-strict-aliasing \
     67                                -finline-limit=64
     68 
     69 # When building for debug, compile everything as arm.
     70 TARGET_arm_debug_CFLAGS := $(TARGET_arm_release_CFLAGS) \
     71                            -O0 \
     72                            -UNDEBUG \
     73                            -fno-omit-frame-pointer \
     74                            -fno-strict-aliasing
     75 
     76 TARGET_thumb_debug_CFLAGS := $(TARGET_thumb_release_CFLAGS) \
     77                              -O0 \
     78                              -UNDEBUG \
     79                              -marm \
     80                              -fno-omit-frame-pointer
     81 
     82 # This function will be called to determine the target CFLAGS used to build
     83 # a C or Assembler source file, based on its tags.
     84 #
     85 TARGET-process-src-files-tags = \
     86 $(eval __arm_sources := $(call get-src-files-with-tag,arm)) \
     87 $(eval __thumb_sources := $(call get-src-files-without-tag,arm)) \
     88 $(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
     89 $(eval __release_sources := $(call get-src-files-without-tag,debug)) \
     90 $(call set-src-files-target-cflags, \
     91     $(call set_intersection,$(__arm_sources),$(__debug_sources)), \
     92     $(TARGET_arm_debug_CFLAGS)) \
     93 $(call set-src-files-target-cflags,\
     94     $(call set_intersection,$(__arm_sources),$(__release_sources)),\
     95     $(TARGET_arm_release_CFLAGS)) \
     96 $(call set-src-files-target-cflags,\
     97     $(call set_intersection,$(__arm_sources),$(__debug_sources)),\
     98     $(TARGET_arm_debug_CFLAGS)) \
     99 $(call set-src-files-target-cflags,\
    100     $(call set_intersection,$(__thumb_sources),$(__release_sources)),\
    101     $(TARGET_thumb_release_CFLAGS)) \
    102 $(call set-src-files-target-cflags,\
    103     $(call set_intersection,$(__thumb_sources),$(__debug_sources)),\
    104     $(TARGET_thumb_debug_CFLAGS)) \
    105 $(call add-src-files-target-cflags,\
    106     $(call get-src-files-with-tag,neon),\
    107     $(TARGET_CFLAGS.neon)) \
    108 $(call set-src-files-text,$(__arm_sources),arm$(space)$(space)) \
    109 $(call set-src-files-text,$(__thumb_sources),thumb)
    110