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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 TOOLCHAIN_VERSION := 4.8
     25 
     26 TARGET_CC := $(TOOLCHAIN_PREFIX)clang$(HOST_EXEEXT)
     27 TARGET_CXX := $(TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
     28 TARGET_LD := $(TOOLCHAIN_PREFIX)clang++$(HOST_EXEEXT)
     29 TARGET_AR := $(TOOLCHAIN_PREFIX)llvm-ar$(HOST_EXEEXT)
     30 ifeq ($(APP_OPTIM),debug)
     31   TARGET_STRIP := \# dont-strip-for-debugging-bitcode
     32 else
     33   TARGET_STRIP := $(TOOLCHAIN_PREFIX)$(LLVM_TRIPLE)-strip$(HOST_EXEEXT)
     34 endif
     35 
     36 # Compiler runtime is determined in bc2native
     37 TARGET_LIBGCC :=
     38 
     39 # Override the ar flags, llvm-ar does not support D option
     40 TARGET_ARFLAGS := crs
     41 
     42 # Only use integrated binary if existed. Otherwise, use python version
     43 ifeq (,$(wildcard $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native$(HOST_EXEEXT)))
     44 BC2NATIVE := $(HOST_PYTHON) $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native.py
     45 else
     46 BC2NATIVE := $(TOOLCHAIN_PREBUILT_ROOT)/bin/ndk-bc2native$(HOST_EXEEXT)
     47 endif
     48 
     49 TARGET_CFLAGS := \
     50     -target $(LLVM_TRIPLE) \
     51     -emit-llvm \
     52     -ffunction-sections \
     53     -funwind-tables \
     54     -fPIC \
     55     -no-canonical-prefixes
     56 # -nostdlibinc
     57 
     58 #TARGET_CXXFLAGS := $(TARGET_CFLAGS) -fno-exceptions -fno-rtti
     59 
     60 # reset backend flags
     61 TARGET_NO_EXECUTE_CFLAGS :=
     62 
     63 # Add and LDFLAGS for the target here
     64 TARGET_LDFLAGS += \
     65     -target $(LLVM_TRIPLE) \
     66     -no-canonical-prefixes
     67 
     68 ifeq ($(APP_OPTIM),debug)
     69   TARGET_LDFLAGS += -Wl,-O0 -Wl,--disable-opt
     70 else
     71   TARGET_LDFLAGS += -Wl,-O2
     72 endif
     73 
     74 TARGET_C_INCLUDES := \
     75     $(SYSROOT_INC)/usr/include
     76 
     77 TARGET_release_CFLAGS := -O2 \
     78                          -g \
     79                          -DNDEBUG \
     80                          -fomit-frame-pointer \
     81                          -fstrict-aliasing
     82 
     83 TARGET_debug_CFLAGS := $(TARGET_release_CFLAGS) \
     84                        -O0 \
     85                        -UNDEBUG \
     86                        -fno-omit-frame-pointer \
     87                        -fno-strict-aliasing
     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 #
     92 TARGET-process-src-files-tags = \
     93 $(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
     94 $(eval __release_sources := $(call get-src-files-without-tag,debug)) \
     95 $(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_debug_CFLAGS)) \
     96 $(call set-src-files-target-cflags, $(__release_sources),$(TARGET_release_CFLAGS)) \
     97 $(call set-src-files-text,$(LOCAL_SRC_FILES),bc) \
     98 
     99 ifeq ($(strip $(filter-out $(NDK_KNOWN_ABIS),$(TARGET_ARCH_ABI))),)
    100 
    101 define cmd-build-shared-library
    102 $(PRIVATE_CXX) \
    103     -Wl,-soname,$(notdir $(LOCAL_BUILT_MODULE)) \
    104     -shared \
    105     --sysroot=$(call host-path,$(PRIVATE_SYSROOT_LINK)) \
    106     $(PRIVATE_LINKER_OBJECTS_AND_LIBRARIES) \
    107     $(PRIVATE_LDFLAGS) \
    108     $(PRIVATE_LDLIBS) \
    109     -o $(call host-path,$(LOCAL_BUILT_MODULE)) && \
    110     $(call host-mv, $(call host-path,$(LOCAL_BUILT_MODULE)), $(call host-path,$(LOCAL_BUILT_MODULE)).bc) && \
    111     $(BC2NATIVE) \
    112     --ndk-dir=$(NDK_ROOT) \
    113     --abi=$(TARGET_ARCH_ABI) \
    114     --platform=$(TARGET_PLATFORM) \
    115     --file $(call host-path, $(LOCAL_BUILT_MODULE)).bc $(patsubst %.bc,%.so,$(call host-path,$(LOCAL_BUILT_MODULE)))
    116 endef
    117 
    118 define cmd-build-executable
    119 $(PRIVATE_CXX) \
    120     -Wl,--gc-sections \
    121     -Wl,-z,nocopyreloc \
    122     --sysroot=$(call host-path,$(PRIVATE_SYSROOT_LINK)) \
    123     $(PRIVATE_LINKER_OBJECTS_AND_LIBRARIES) \
    124     $(PRIVATE_LDFLAGS) \
    125     $(PRIVATE_LDLIBS) \
    126     -o $(call host-path,$(LOCAL_BUILT_MODULE)) && \
    127     $(call host-mv, $(call host-path,$(LOCAL_BUILT_MODULE)), $(call host-path,$(LOCAL_BUILT_MODULE)).bc) && \
    128     $(BC2NATIVE) \
    129     --ndk-dir=$(NDK_ROOT) \
    130     --abi=$(TARGET_ARCH_ABI) \
    131     --platform=$(TARGET_PLATFORM) \
    132     --file $(call host-path,$(LOCAL_BUILT_MODULE)).bc $(call host-path,$(LOCAL_BUILT_MODULE))
    133 endef
    134 
    135 endif
    136