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1# Copyright (C) 2014 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 x86 llvm toolchain any
17# 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
30LLVM_TOOLCHAIN_PREBUILT_ROOT := $(call get-toolchain-root,llvm)
31LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/
32
33TOOLCHAIN_NAME := i686-linux-android
34BINUTILS_ROOT := $(call get-binutils-root,$(NDK_ROOT),$(TOOLCHAIN_NAME))
35TOOLCHAIN_ROOT := $(call get-toolchain-root,x86-4.9)
36TOOLCHAIN_PREFIX := $(TOOLCHAIN_ROOT)/bin/$(TOOLCHAIN_NAME)-
37
38TARGET_CC := $(LLVM_TOOLCHAIN_PREFIX)clang$(HOST_EXEEXT)
39TARGET_CXX := $(LLVM_TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
40
41LLVM_TRIPLE := i686-none-linux-android
42
43TARGET_CFLAGS := \
44    -gcc-toolchain $(call host-path,$(TOOLCHAIN_ROOT)) \
45    -target $(LLVM_TRIPLE) \
46    -ffunction-sections \
47    -funwind-tables \
48    -fstack-protector-strong \
49    -fPIC \
50    -Wno-invalid-command-line-argument \
51    -Wno-unused-command-line-argument \
52    -no-canonical-prefixes
53
54# Add and LDFLAGS for the target here
55TARGET_LDFLAGS += \
56    -gcc-toolchain $(call host-path,$(TOOLCHAIN_ROOT)) \
57    -target $(LLVM_TRIPLE) \
58    -no-canonical-prefixes
59
60TARGET_x86_release_CFLAGS := -O2 \
61                             -g \
62                             -DNDEBUG \
63                             -fomit-frame-pointer \
64                             -fstrict-aliasing
65
66# When building for debug, compile everything as x86.
67TARGET_x86_debug_CFLAGS := $(TARGET_x86_release_CFLAGS) \
68                           -O0 \
69                           -UNDEBUG \
70                           -fno-omit-frame-pointer \
71                           -fno-strict-aliasing
72
73# This function will be called to determine the target CFLAGS used to build
74# a C or Assembler source file, based on its tags.
75#
76TARGET-process-src-files-tags = \
77$(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
78$(eval __release_sources := $(call get-src-files-without-tag,debug)) \
79$(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_x86_debug_CFLAGS)) \
80$(call set-src-files-target-cflags, $(__release_sources),$(TARGET_x86_release_CFLAGS)) \
81
82# The ABI-specific sub-directory that the SDK tools recognize for
83# this toolchain's generated binaries
84TARGET_ABI_SUBDIR := x86
85