Set gcc4.9 as the default compilers for 64-bit

Support for 64-bit aarch64 and mips64 are not great in gcc4.8, and x86_64
follows suite (to use gcc4.9 as the default) for the sake of consistency.

gcc-4.8 is removed from 64-bit.  As a result, clang with 64-bit target
now sets -gcc-toolchain to gcc-4.9

Change-Id: I47babe9bc34d041ea2a99b8839c8ca1688edb055

11 files changed, 9 insertions, 262 deletions

diff --git a/build/core/setup-toolchain.mk b/build/core/setup-toolchain.mk
index c141e3813..8a0f1419a 100644
--- a/build/core/setup-toolchain.mk
+++ b/build/core/setup-toolchain.mk
@@ -38,8 +38,8 @@ ifndef NDK_TOOLCHAIN
       # Filter out 4.7, 4.8 and 4.9 which are newer than the defaultat this moment
       TARGET_TOOLCHAIN_LIST := $(filter-out %4.7 %4.8 %4.9,$(TARGET_TOOLCHAIN_LIST))
     else
-      # Filter out 4.6 and 4.7 which don't have good 64-bit support in all supported arch
-      TARGET_TOOLCHAIN_LIST := $(filter-out %4.6 %4.7,$(TARGET_TOOLCHAIN_LIST))
+      # Filter out 4.6, 4.7 and 4.8 which don't have good 64-bit support in all supported arch
+      TARGET_TOOLCHAIN_LIST := $(filter-out %4.6 %4.7 %4.8,$(TARGET_TOOLCHAIN_LIST))
     endif
 
     ifndef TARGET_TOOLCHAIN_LIST
@@ -49,7 +49,7 @@ ifndef NDK_TOOLCHAIN
         $(call __ndk_error,Aborting)
     endif
     # Select the last toolchain from the sorted list.
-    # For now, this is enough to select by default gcc4.6 for 32-bit, and 4.8 for 64-bit, the the
+    # For now, this is enough to select by default gcc4.6 for 32-bit, and 4.9 for 64-bit, the the
     # latest llvm if no gcc
     ifneq (,$(filter-out llvm-%,$(TARGET_TOOLCHAIN_LIST)))
         TARGET_TOOLCHAIN := $(firstword $(TARGET_TOOLCHAIN_LIST))
diff --git a/build/tools/dev-defaults.sh b/build/tools/dev-defaults.sh
index e39f9e95b..d9bd4088a 100644
--- a/build/tools/dev-defaults.sh
+++ b/build/tools/dev-defaults.sh
@@ -47,10 +47,10 @@ DEFAULT_GCC_VERSION_LIST="4.6 4.8 4.9"
 # The default GCC version for 32-bit NDK is the first item in $DEFAULT_GCC_VERSION_LIST
 DEFAULT_GCC32_VERSION=$(echo "$DEFAULT_GCC_VERSION_LIST" | tr ' ' '\n' | head -n 1)
 
-# The default GCC version for 64-bit is the second item in $DEFAULT_GCC_VERSION_LIST
-DEFAULT_GCC64_VERSION=$(echo "$DEFAULT_GCC_VERSION_LIST" | tr ' ' '\n' | head -n 2 | tail -n 1)
+# The default GCC version for 64-bit is the last item in $DEFAULT_GCC_VERSION_LIST
+DEFAULT_GCC64_VERSION=$(echo "$DEFAULT_GCC_VERSION_LIST" | tr ' ' '\n' | tail -n 1)
 
-# The default GCC version for "clang -gcc-toolchain", is also the second item in $DEFAULT_GCC_VERSION_LIST
+# The default GCC version for "clang -gcc-toolchain", is the second item in $DEFAULT_GCC_VERSION_LIST
 DEFAULT_LLVM_GCC_VERSION=$(echo "$DEFAULT_GCC_VERSION_LIST" | tr ' ' '\n' | head -n 2 | tail -n 1)
 
 DEFAULT_BINUTILS_VERSION=2.21
diff --git a/toolchains/aarch64-linux-android-4.8/config.mk b/toolchains/aarch64-linux-android-4.8/config.mk
deleted file mode 100644
index 4f5d22057..000000000
--- a/toolchains/aarch64-linux-android-4.8/config.mk
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# config file for the arm64 gcc-4.8 toolchain for the Android NDK
-# the real meat is in the setup.mk file adjacent to this one
-#
-TOOLCHAIN_ARCH := arm64
-TOOLCHAIN_ABIS := arm64-v8a
diff --git a/toolchains/aarch64-linux-android-4.8/setup.mk b/toolchains/aarch64-linux-android-4.8/setup.mk
deleted file mode 100644
index e2c5d389d..000000000
--- a/toolchains/aarch64-linux-android-4.8/setup.mk
+++ /dev/null
@@ -1,62 +0,0 @@
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# this file is used to prepare the NDK to build with the arm64 gcc-4.8
-# toolchain any number of source files
-#
-# its purpose is to define (or re-define) templates used to build
-# various sources into target object files, libraries or executables.
-#
-# Note that this file may end up being parsed several times in future
-# revisions of the NDK.
-#
-
-TOOLCHAIN_NAME   := aarch64-linux-android-4.8
-TOOLCHAIN_PREFIX := $(TOOLCHAIN_PREBUILT_ROOT)/bin/aarch64-linux-android-
-
-TARGET_CFLAGS := \
-    -fpic \
-    -ffunction-sections \
-    -funwind-tables \
-    -fstack-protector \
-    -no-canonical-prefixes
-
-TARGET_C_INCLUDES := \
-    $(SYSROOT_INC)/usr/include
-
-TARGET_LDFLAGS := -no-canonical-prefixes
-
-TARGET_arm64_release_CFLAGS := -O2 \
-                               -g \
-                               -DNDEBUG \
-                               -fomit-frame-pointer \
-                               -fstrict-aliasing    \
-                               -funswitch-loops     \
-                               -finline-limit=300
-
-TARGET_arm64_debug_CFLAGS := $(TARGET_arm64_release_CFLAGS) \
-                             -O0 \
-                             -UNDEBUG \
-                             -fno-omit-frame-pointer \
-                             -fno-strict-aliasing
-
-# This function will be called to determine the target CFLAGS used to build
-# a C or Assembler source file, based on its tags.
-#
-TARGET-process-src-files-tags = \
-$(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
-$(eval __release_sources := $(call get-src-files-without-tag,debug)) \
-$(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_x86_64_debug_CFLAGS)) \
-$(call set-src-files-target-cflags, $(__release_sources),$(TARGET_x86_64_release_CFLAGS)) \
diff --git a/toolchains/aarch64-linux-android-clang3.4/setup.mk b/toolchains/aarch64-linux-android-clang3.4/setup.mk
index e9c1cb6f0..d297f2967 100644
--- a/toolchains/aarch64-linux-android-clang3.4/setup.mk
+++ b/toolchains/aarch64-linux-android-clang3.4/setup.mk
@@ -33,7 +33,7 @@ LLVM_TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(LLVM_NAME)
 LLVM_TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(LLVM_TOOLCHAIN_ROOT))
 LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/
 
-TOOLCHAIN_VERSION := 4.8
+TOOLCHAIN_VERSION := 4.9
 TOOLCHAIN_NAME := aarch64-linux-android-$(TOOLCHAIN_VERSION)
 TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(TOOLCHAIN_NAME)
 TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(TOOLCHAIN_ROOT))
diff --git a/toolchains/mips64el-linux-android-4.8/config.mk b/toolchains/mips64el-linux-android-4.8/config.mk
deleted file mode 100644
index 1b0afc758..000000000
--- a/toolchains/mips64el-linux-android-4.8/config.mk
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# config file for the mips64el gcc-4.8 toolchain for the Android NDK
-# the real meat is in the setup.mk file adjacent to this one
-#
-TOOLCHAIN_ARCH := mips64
-TOOLCHAIN_ABIS := mips64
diff --git a/toolchains/mips64el-linux-android-4.8/setup.mk b/toolchains/mips64el-linux-android-4.8/setup.mk
deleted file mode 100644
index 814c455d4..000000000
--- a/toolchains/mips64el-linux-android-4.8/setup.mk
+++ /dev/null
@@ -1,66 +0,0 @@
-# Copyright (C) 2014 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# this file is used to prepare the NDK to build with the mips64el gcc-4.8
-# toolchain any number of source files
-#
-# its purpose is to define (or re-define) templates used to build
-# various sources into target object files, libraries or executables.
-#
-# Note that this file may end up being parsed several times in future
-# revisions of the NDK.
-#
-
-TARGET_CFLAGS := \
-        -fpic \
-        -fno-strict-aliasing \
-        -finline-functions \
-        -ffunction-sections \
-        -funwind-tables \
-        -fmessage-length=0 \
-        -fno-inline-functions-called-once \
-        -fgcse-after-reload \
-        -frerun-cse-after-loop \
-        -frename-registers \
-        -no-canonical-prefixes
-
-TARGET_LDFLAGS := -no-canonical-prefixes
-
-TARGET_C_INCLUDES := \
-    $(SYSROOT_INC)/usr/include
-
-TARGET_mips64_release_CFLAGS := -O2 \
-                                -g \
-                                -DNDEBUG \
-                                -fomit-frame-pointer \
-                                -funswitch-loops     \
-                                -finline-limit=300
-
-TARGET_mips64_debug_CFLAGS := -O0 \
-                              -g \
-                              -fno-omit-frame-pointer
-
-
-# This function will be called to determine the target CFLAGS used to build
-# a C or Assembler source file, based on its tags.
-TARGET-process-src-files-tags = \
-$(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
-$(eval __release_sources := $(call get-src-files-without-tag,debug)) \
-$(call set-src-files-target-cflags, \
-    $(__debug_sources),\
-    $(TARGET_mips64_debug_CFLAGS)) \
-$(call set-src-files-target-cflags,\
-    $(__release_sources),\
-    $(TARGET_mips64_release_CFLAGS)) \
diff --git a/toolchains/mips64el-linux-android-clang3.4/setup.mk b/toolchains/mips64el-linux-android-clang3.4/setup.mk
index 1c8a8d33d..f0d3e6cf1 100644
--- a/toolchains/mips64el-linux-android-clang3.4/setup.mk
+++ b/toolchains/mips64el-linux-android-clang3.4/setup.mk
@@ -33,7 +33,7 @@ LLVM_TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(LLVM_NAME)
 LLVM_TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(LLVM_TOOLCHAIN_ROOT))
 LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/
 
-TOOLCHAIN_VERSION := 4.8
+TOOLCHAIN_VERSION := 4.9
 TOOLCHAIN_NAME := mip64sel-linux-android-$(TOOLCHAIN_VERSION)
 TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(TOOLCHAIN_NAME)
 TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(TOOLCHAIN_ROOT))
diff --git a/toolchains/x86_64-4.8/config.mk b/toolchains/x86_64-4.8/config.mk
deleted file mode 100644
index 2082f6262..000000000
--- a/toolchains/x86_64-4.8/config.mk
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (C) 2009 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# config file for the x86_64 gcc-4.8 toolchain for the Android NDK
-# the real meat is in the setup.mk file adjacent to this one
-#
-TOOLCHAIN_ARCH := x86_64
-TOOLCHAIN_ABIS := x86_64
diff --git a/toolchains/x86_64-4.8/setup.mk b/toolchains/x86_64-4.8/setup.mk
deleted file mode 100644
index 4cb9f1c77..000000000
--- a/toolchains/x86_64-4.8/setup.mk
+++ /dev/null
@@ -1,65 +0,0 @@
-# Copyright (C) 2009 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-# this file is used to prepare the NDK to build with the x86_64 gcc-4.8
-# toolchain any number of source files
-#
-# its purpose is to define (or re-define) templates used to build
-# various sources into target object files, libraries or executables.
-#
-# Note that this file may end up being parsed several times in future
-# revisions of the NDK.
-#
-
-TOOLCHAIN_NAME   := x86_64-4.8
-TOOLCHAIN_PREFIX := $(TOOLCHAIN_PREBUILT_ROOT)/bin/x86_64-linux-android-
-
-TARGET_CFLAGS := \
-    -ffunction-sections \
-    -funwind-tables \
-    -fstack-protector \
-    -no-canonical-prefixes
-
-TARGET_C_INCLUDES := \
-    $(SYSROOT_INC)/usr/include
-
-TARGET_LDFLAGS := -no-canonical-prefixes
-
-TARGET_x86_64_release_CFLAGS := -O2 \
-                             -g \
-                             -DNDEBUG \
-                             -fomit-frame-pointer \
-                             -fstrict-aliasing    \
-                             -funswitch-loops     \
-                             -finline-limit=300
-
-TARGET_x86_64_debug_CFLAGS := $(TARGET_x86_64_release_CFLAGS) \
-                           -O0 \
-                           -UNDEBUG \
-                           -fno-omit-frame-pointer \
-                           -fno-strict-aliasing
-
-# This function will be called to determine the target CFLAGS used to build
-# a C or Assembler source file, based on its tags.
-#
-TARGET-process-src-files-tags = \
-$(eval __debug_sources := $(call get-src-files-with-tag,debug)) \
-$(eval __release_sources := $(call get-src-files-without-tag,debug)) \
-$(call set-src-files-target-cflags, $(__debug_sources), $(TARGET_x86_64_debug_CFLAGS)) \
-$(call set-src-files-target-cflags, $(__release_sources),$(TARGET_x86_64_release_CFLAGS)) \
-
-# The ABI-specific sub-directory that the SDK tools recognize for
-# this toolchain's generated binaries
-TARGET_ABI_SUBDIR := x86_64
diff --git a/toolchains/x86_64-clang3.4/setup.mk b/toolchains/x86_64-clang3.4/setup.mk
index 4f132b663..2b8c96326 100644
--- a/toolchains/x86_64-clang3.4/setup.mk
+++ b/toolchains/x86_64-clang3.4/setup.mk
@@ -33,7 +33,7 @@ LLVM_TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(LLVM_NAME)
 LLVM_TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(LLVM_TOOLCHAIN_ROOT))
 LLVM_TOOLCHAIN_PREFIX := $(LLVM_TOOLCHAIN_PREBUILT_ROOT)/bin/
 
-TOOLCHAIN_VERSION := 4.8
+TOOLCHAIN_VERSION := 4.9
 TOOLCHAIN_NAME := x86_64-$(TOOLCHAIN_VERSION)
 TOOLCHAIN_ROOT := $(NDK_ROOT)/toolchains/$(TOOLCHAIN_NAME)
 TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(TOOLCHAIN_ROOT))