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      1 # Copyright (C) 2013 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 TOOLCHAIN_NAME   := clang-3.4
     16 TOOLCHAIN_PREFIX := $(TOOLCHAIN_PREBUILT_ROOT)/bin/
     17 ifneq ($(UNKNOWN_ABI_64),)
     18 LLVM_TRIPLE := le64-none-ndk
     19 else
     20 LLVM_TRIPLE := le32-none-ndk
     21 endif
     22 
     23 # For sources/cxx-stl/gnu-libstdc++/$(TOOLCHAIN_VERSION)/libs/*/libsupc++.a
     24 ifneq ($(UNKNOWN_ABI_64),)
     25 TOOLCHAIN_VERSION := 4.9
     26 else
     27 TOOLCHAIN_VERSION := 4.8
     28 endif
     29 
     30 TARGET_CC := $(TOOLCHAIN_PREFIX)clang$(HOST_EXEEXT)
     31 TARGET_CXX := $(TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
     32 TARGET_LD := $(TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
     33 TARGET_AR := $(TOOLCHAIN_PREFIX)llvm-ar$(HOST_EXEEXT)
     34 ifeq ($(APP_OPTIM),debug)
     35   TARGET_STRIP := \# dont-strip-for-debugging-bitcode
     36 else
     37   TARGET_STRIP := $(TOOLCHAIN_PREFIX)$(LLVM_TRIPLE)-strip$(HOST_EXEEXT)
     38 endif
     39 
     40 # Compiler runtime is determined in bc2native
     41 TARGET_LIBGCC :=
     42 
     43 # Override the ar flags, llvm-ar does not support D option
     44 TARGET_ARFLAGS := crs
     45 
     46 # Only use integrated binary if existed. Otherwise, use python version
     47 ifeq (,$(wildcard $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native$(HOST_EXEEXT)))
     48 BC2NATIVE := $(HOST_PYTHON) $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native.py
     49 else
     50 BC2NATIVE := $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native$(HOST_EXEEXT)
     51 endif
     52 
     53 TARGET_CFLAGS := \
     54     -target $(LLVM_TRIPLE) \
     55     -emit-llvm \
     56     -ffunction-sections \
     57     -funwind-tables \
     58     -fPIC \
     59     -no-canonical-prefixes
     60 # -nostdlibinc
     61 
     62 #TARGET_CXXFLAGS := $(TARGET_CFLAGS) -fno-exceptions -fno-rtti
     63 
     64 # reset backend flags
     65 TARGET_NO_EXECUTE_CFLAGS :=
     66 
     67 # Add and LDFLAGS for the target here
     68 TARGET_LDFLAGS += \
     69     -target $(LLVM_TRIPLE) \
     70     -no-canonical-prefixes
     71 
     72 ifeq ($(APP_OPTIM),debug)
     73   TARGET_LDFLAGS += -Wl,-O0 -Wl,--disable-opt
     74 else
     75   TARGET_LDFLAGS += -Wl,-O2
     76 endif
     77 
     78 TARGET_C_INCLUDES := \
     79     $(SYSROOT_INC)/usr/include
     80 
     81 TARGET_release_CFLAGS := -O2 \
     82                          -g \
     83                          -DNDEBUG \
     84                          -fomit-frame-pointer \
     85                          -fstrict-aliasing
     86 
     87 TARGET_debug_CFLAGS := $(TARGET_release_CFLAGS) \
     88                        -O0 \
     89                        -UNDEBUG \
     90                        -fno-omit-frame-pointer \
     91                        -fno-strict-aliasing
     92 
     93 # This function will be called to determine the target CFLAGS used to build
     94 # a C or Assembler source file, based on its tags.
     95 #
     96 TARGET-process-src-files-tags = \
     97 $(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
     98 $(eval __release_sources := $(call get-src-files-without-tag,debug)) \
     99 $(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_debug_CFLAGS)) \
    100 $(call set-src-files-target-cflags, $(__release_sources),$(TARGET_release_CFLAGS)) \
    101 $(call set-src-files-text,$(LOCAL_SRC_FILES),bc) \
    102 
    103 ifeq ($(strip $(filter-out $(NDK_KNOWN_ABIS),$(TARGET_ARCH_ABI))),)
    104 
    105 define cmd-build-shared-library
    106 $(PRIVATE_CXX) \
    107     -Wl,-soname,$(notdir $(LOCAL_BUILT_MODULE)) \
    108     -shared \
    109     --sysroot=$(call host-path,$(PRIVATE_SYSROOT_LINK)) \
    110     $(PRIVATE_LINKER_OBJECTS_AND_LIBRARIES) \
    111     $(PRIVATE_LDFLAGS) \
    112     $(PRIVATE_LDLIBS) \
    113     -o $(call host-path,$(LOCAL_BUILT_MODULE)) && \
    114     $(call host-mv, $(call host-path,$(LOCAL_BUILT_MODULE)), $(call host-path,$(LOCAL_BUILT_MODULE)).bc) && \
    115     $(BC2NATIVE) \
    116     --ndk-dir=$(NDK_ROOT) \
    117     --abi=$(TARGET_ARCH_ABI) \
    118     --platform=$(TARGET_PLATFORM) \
    119     --file $(call host-path, $(LOCAL_BUILT_MODULE)).bc $(patsubst %.bc,%.so,$(call host-path,$(LOCAL_BUILT_MODULE)))
    120 endef
    121 
    122 define cmd-build-executable
    123 $(PRIVATE_CXX) \
    124     -Wl,--gc-sections \
    125     -Wl,-z,nocopyreloc \
    126     --sysroot=$(call host-path,$(PRIVATE_SYSROOT_LINK)) \
    127     $(PRIVATE_LINKER_OBJECTS_AND_LIBRARIES) \
    128     $(PRIVATE_LDFLAGS) \
    129     $(PRIVATE_LDLIBS) \
    130     -o $(call host-path,$(LOCAL_BUILT_MODULE)) && \
    131     $(call host-mv, $(call host-path,$(LOCAL_BUILT_MODULE)), $(call host-path,$(LOCAL_BUILT_MODULE)).bc) && \
    132     $(BC2NATIVE) \
    133     --ndk-dir=$(NDK_ROOT) \
    134     --abi=$(TARGET_ARCH_ABI) \
    135     --platform=$(TARGET_PLATFORM) \
    136     --file $(call host-path,$(LOCAL_BUILT_MODULE)).bc $(call host-path,$(LOCAL_BUILT_MODULE))
    137 endef
    138 
    139 endif
    140