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 arm64 clang toolchain 17 # 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_TOOLCHAIN_PREBUILT_ROOT := $(call get-toolchain-root,llvm) 31 LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/ 32 33 TOOLCHAIN_NAME := aarch64-linux-android 34 BINUTILS_ROOT := $(call get-binutils-root,$(NDK_ROOT),$(TOOLCHAIN_NAME)) 35 TOOLCHAIN_ROOT := $(call get-toolchain-root,$(TOOLCHAIN_NAME)-4.9) 36 TOOLCHAIN_PREFIX := $(TOOLCHAIN_ROOT)/bin/$(TOOLCHAIN_NAME)- 37 38 TARGET_CC := $(LLVM_TOOLCHAIN_PREFIX)clang$(HOST_EXEEXT) 39 TARGET_CXX := $(LLVM_TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT) 40 41 LLVM_TRIPLE := aarch64-none-linux-android 42 43 TARGET_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 TARGET_LDFLAGS += \ 55 -gcc-toolchain $(call host-path,$(TOOLCHAIN_ROOT)) \ 56 -target $(LLVM_TRIPLE) \ 57 -no-canonical-prefixes 58 59 TARGET_arm64_release_CFLAGS := -O2 \ 60 -g \ 61 -DNDEBUG \ 62 -fomit-frame-pointer \ 63 -fstrict-aliasing 64 65 TARGET_arm64_debug_CFLAGS := $(TARGET_arm64_release_CFLAGS) \ 66 -O0 \ 67 -UNDEBUG \ 68 -fno-omit-frame-pointer \ 69 -fno-strict-aliasing 70 71 # This function will be called to determine the target CFLAGS used to build 72 # a C or Assembler source file, based on its tags. 73 # 74 TARGET-process-src-files-tags = \ 75 $(eval __debug_sources := $(call get-src-files-with-tag,debug)) \ 76 $(eval __release_sources := $(call get-src-files-without-tag,debug)) \ 77 $(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_arm64_debug_CFLAGS)) \ 78 $(call set-src-files-target-cflags, $(__release_sources),$(TARGET_arm64_release_CFLAGS)) \ 79