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-4.8
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
26TARGET_CFLAGS := \
27    -fpic \
28    -ffunction-sections \
29    -funwind-tables \
30    -fstack-protector \
31    -no-canonical-prefixes
32
33TARGET_LDFLAGS := -no-canonical-prefixes
34
35TARGET_C_INCLUDES := \
36    $(SYSROOT_INC)/usr/include
37
38ifneq ($(filter $(TARGET_ARCH_ABI), armeabi-v7a armeabi-v7a-hard),)
39    TARGET_CFLAGS += -march=armv7-a \
40                     -mfpu=vfpv3-d16
41    TARGET_LDFLAGS += -march=armv7-a \
42                     -Wl,--fix-cortex-a8
43ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
44    TARGET_CFLAGS += -mfloat-abi=softfp
45else
46    TARGET_CFLAGS += -mhard-float \
47                     -D_NDK_MATH_NO_SOFTFP=1
48    TARGET_LDFLAGS += -Wl,--no-warn-mismatch \
49                     -lm_hard
50endif
51
52else
53    TARGET_CFLAGS += -march=armv5te \
54                            -mtune=xscale \
55                            -msoft-float
56endif
57
58TARGET_CFLAGS.neon := -mfpu=neon
59
60TARGET_arm_release_CFLAGS :=  -O2 \
61                              -g \
62                              -DNDEBUG \
63                              -fomit-frame-pointer \
64                              -fstrict-aliasing    \
65                              -funswitch-loops     \
66                              -finline-limit=300
67
68TARGET_thumb_release_CFLAGS := -mthumb \
69                               -Os \
70                               -g \
71                               -DNDEBUG \
72                               -fomit-frame-pointer \
73                               -fno-strict-aliasing \
74                               -finline-limit=64
75
76# When building for debug, compile everything as arm.
77TARGET_arm_debug_CFLAGS := $(TARGET_arm_release_CFLAGS) \
78                           -O0 \
79                           -UNDEBUG \
80                           -fno-omit-frame-pointer \
81                           -fno-strict-aliasing
82
83TARGET_thumb_debug_CFLAGS := $(TARGET_thumb_release_CFLAGS) \
84                             -O0 \
85                             -UNDEBUG \
86                             -marm \
87                             -fno-omit-frame-pointer
88
89# This function will be called to determine the target CFLAGS used to build
90# a C or Assembler source file, based on its tags.
91#
92TARGET-process-src-files-tags = \
93$(eval __arm_sources := $(call get-src-files-with-tag,arm)) \
94$(eval __thumb_sources := $(call get-src-files-without-tag,arm)) \
95$(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
96$(eval __release_sources := $(call get-src-files-without-tag,debug)) \
97$(call set-src-files-target-cflags, \
98    $(call set_intersection,$(__arm_sources),$(__debug_sources)), \
99    $(TARGET_arm_debug_CFLAGS)) \
100$(call set-src-files-target-cflags,\
101    $(call set_intersection,$(__arm_sources),$(__release_sources)),\
102    $(TARGET_arm_release_CFLAGS)) \
103$(call set-src-files-target-cflags,\
104    $(call set_intersection,$(__arm_sources),$(__debug_sources)),\
105    $(TARGET_arm_debug_CFLAGS)) \
106$(call set-src-files-target-cflags,\
107    $(call set_intersection,$(__thumb_sources),$(__release_sources)),\
108    $(TARGET_thumb_release_CFLAGS)) \
109$(call set-src-files-target-cflags,\
110    $(call set_intersection,$(__thumb_sources),$(__debug_sources)),\
111    $(TARGET_thumb_debug_CFLAGS)) \
112$(call add-src-files-target-cflags,\
113    $(call get-src-files-with-tag,neon),\
114    $(TARGET_CFLAGS.neon)) \
115$(call set-src-files-text,$(__arm_sources),arm) \
116$(call set-src-files-text,$(__thumb_sources),thumb)
117