深海游弋的鱼 – 第 26 页

android-ndk-r10e开启C++11，编译TEMP_FAILURE_RETRY错误

在使用select来操作socket的时候，一般都是会这么写

1	int err = TEMP_FAILURE_RETRY(select(socket_fd + 1, NULL, &set, NULL, const_cast<struct timeval*>(&timeout)));

其中的“TEMP_FAILURE_RETRY”宏在“unistd.h”中的定义如下：

/* Used to retry syscalls that can return EINTR. */

#define TEMP_FAILURE_RETRY(exp) ({ \

typeof (exp) _rc; \

do { \

_rc = (exp); \

} while (_rc == -1 && errno == EINTR); \

_rc; })

正常情况下，编译是没问题的。但是当在“Application.mk”中增加

1	APP_CPPFLAGS += -std=c++11

之后，发现编译不通过了。报告“error: 'typeof' was not declared in this scope”。

解决方法：

1	APP_CPPFLAGS += -std=gun++11

“c++11”和“gnu++11”的差别：

“gnu++11”增加了很多的扩展“c++11”的功能，功能更加多，具体的扩展参考Extensions to the C++ Language

NDK下GCC定义__cplusplus不正确的问题

在C++升级之后，编译会出现“C++11 error: unable to find string literal operator 'operator"”这种错误，按照链接里面操作，在“android-ndk-r10e”上面依旧出现问题。

追踪了一下，才发现，这个是GCC的一个BUG，GCC-4.7，GCC-4.8中定义的__cplusplus 竟然都是 “__cplusplus=1”，这个是明显不正确的，具体的BUG内容查看“__cplusplus defined to 1, should be 199711L”。

尽管这个BUG已经修复了，但是很明显“android-ndk-r10e”使用的GCC版本并没有合并这个补丁。

解决方案：

升级GCC到4.9,在”Application.mk“中增加

1	NDK_TOOLCHAIN_VERSION = 4.9

Android下NDK开发的动态库（.so,shared library)增加版本号信息

在Android下面开发，免不了要涉及到C/C++层的开发，这就会涉及到崩溃异常的处理问题。

随着程序的不断升级，更新，会出现多个版本的动态库同时在线上共存的问题，一旦出现崩溃日志，往往不能方便的知道到底是哪个版本出现的崩溃。

传统的Linux,可以通过编译时候指定版本号来处理，最后生成如“libc.so.6”这种形式的文件名，我们可以根据文件名来获得相应的版本信息。遗憾的是，这种命名方式，在Android上面是不支持的。

目前的需求主要有三点：

不依赖文件名，查询到版本号

版本号写在文件名中，是一个比较方便的方式，但是带来的问题却是，靠不住！文件名可以随意更改，往往传来传去，文件名中的信息就改得面目全非了。
logcat的崩溃日志中能得到版本号

系统自带的logcat会在进程崩溃的时候，打印出崩溃栈，但是信息非常的精简，只有当前的线程回退栈帧信息（backtrace)以及几个关键寄存器信息，往往不能准确提供有足够的信息。而如果想在客户的设备上面，拿到完整的core-dump信息，只能是呵呵一下了！
C/C++层的版本号变动，不要改动JAVA层的代码

一方面，如果我们把版本号写在动态库的名字里面，这样会造成每次动态库的升级，JAVA的调用代码都需要变动，小团队还好，大团队，完全不可想象。另一方面，如果是系统框架层的开发，更加悲催，一个文件名的改动，影响到一片，当然，软链接也是个不错的选择，但是这样，常用的APK开发又要折腾一番，免不了一堆的抱怨。

针对上面的需求，我们逐个来提供解决方案：

不依赖文件名，查询到版本号

在任意的C/C++文件中增加如下代码

1	const static __attribute__((unused,section(".SO_VERSION"))) char Version[] = VERSION;

在Android.mk文件中增加

1	LOCAL_CFLAGS += -DVERSION='"1.0.3"'

编译生成的".so"文件使用如下命令即可查询版本号信息：

$readelf --string-dump=".SO_VERSION" libSo.so

String dump of section '.SO_VERSION':

[ 0] 1.0.3

解释：
上面的代码的目的，是要求GCC在一个名为".SO_VERSION"的段内，记录我们的版本号信息。“unused”属性用于告诉GCC，不要在编译的时候警告这个变量没有被任何代码引用过。
注意事项：
在定义变量"Version"的时候，不要使用"volatile"来修饰。这个关键字影响到了最后生成的段的"PROGBITS"标记位置，这个标记表明了最后加载到内存中的数据是否可修改（我们当然希望这个位置不可修改，如果可写，可能由于越界导致版本号的不准确）。

没有使用"volatile"修饰

1 2	$ readelf -S libSo.so \| grep .SO_VERSION [12] .SO_VERSION PROGBITS 0003f520 03f520 000008 00 A 0 0 8

使用"volatile"修饰

1 2	$ readelf -S libSo.so \| grep .SO_VERSION [12] .SO_VERSION PROGBITS 0003f520 03f520 000008 00 WA 0 0 8

注意两者的不同，一个属性是"A",一个属性是"WA"。

logcat的崩溃日志中能得到版本号，并且C/C++层的版本号变动，不要改动JAVA层的代码

目前对于这个问题的解决方法，是设置代理So。具体操作方式如下（假定我们生成的".so"项目LOCAL_MODULE:=So）：

1.修改原来项目中的"JNI_OnLoad","JNI_OnUnLoad"函数，重新命名为 "So_JNI_OnLoad","So_JNI_OnUnLoad" 其他代码不变，并且在"So-jni.h"中对这两个函数进行声明。

2.所有的JNI方法都通过 "JavaVM->RegisterNatives" 方法进行动态注册。

3.建立SoStub-jni.cpp，代码如下：

#include "So-jni.h"

extern "C"

JNIEXPORT int JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {

return So_JNI_OnLoad(vm,reserved);

}

extern "C"

JNIEXPORT void JNICALL JNI_OnUnload(JavaVM* vm, void* reserved) {

return So_JNI_OnUnload(vm,reserved);

}

4.原工程的"LOCAL_MODULE"修改为"LOCAL_MODULE:=So_1_0_3"（版本号根据实际情况调整即可）

5.修改Android.mk，增加如下内容

include $(CLEAR_VARS)

LOCAL_MODULE := SoStub

LOCAL_SRC_FILES := SoStub-jni.cpp

LOCAL_SHARED_LIBRARIES += So_1_0_3

include $(BUILD_SHARED_LIBRARY)

6.修改JAVA层的调用代码

static {

System.loadLibrary("So");

}

为：

static {

System.loadLibrary("SoStub");

}

解释：

由于logcat打印的崩溃栈，信息极少，因此我们只能采取这种折中的办法，这样设置之后，崩溃栈中会打印出"libSo_1_0_3.so"这样的字样，我们就可以知道版本号了。

LMbench 3.0移植到Android并测试内存带宽

LMbench是个可移植的，用于评价系统综合性能的多平台开源benchmark，能够测试包括文档读写、内存操作、进程创建销毁开销、网络等性能。通过以下步骤操作，即可将LMbench移植到Android上。

下载LMbench源码

下载地址http://sourceforge.net/projects/lmbench/
也可在本站下载

修改LMbench代码

1.解压缩到指定的目录，保证最终的目录如下：

├── lmbench3/

│ ├── jni/

│ ├── doc/

│ ├── result/

│ ├── scripts/

│ ├── src/

│ ├── ACKNOWLEDGEMENTS

│ ├── CHANGES

│ ├── COPYING

│ ├── COPYING-2

│ ├── hbench-REBUTTAL

│ ├── Makefile

│ ├── README

2.修改“src/bench.h”的38行，40行，注释掉“#include <rpc/rpc.h>”，“#include <rpc/types.h>”，然后添加如下定义

#ifndef S_IREAD

#define S_IREAD S_IRUSR

#endif

#ifndef S_IWRITE

#define S_IWRITE S_IWUSR

#endif

3.添加根目录下面Android.mk，jni/目录下面内容如下：

# 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.

BUILD_LMBENCH := true

include $(call all-subdir-makefiles)

4.添加根目录下面Android.mk，jni/src目录下面内容如下：

# Copyright (C) 2008 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.

ifeq ($(BUILD_LMBENCH),true)
LOCAL_PATH := $(call my-dir)
COMMON_CFLAGS := -DANDROID -DHAVE_uint
COMMON_LIBS := lmbench_lib
ANDROID_LMBENCH := true

# Build lmbench_lib
include $(CLEAR_VARS)

LOCAL_SRC_FILES := lib_unix.c lib_timing.c \
   	lib_mem.c lib_stats.c lib_debug.c getopt.c lib_sched.c
ifneq ($(ANDROID_LMBENCH),true)
	LOCAL_SRC_FILES := $(LOCAL_SRC_FILES) lib_tcp.c lib_udp.c
endif
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lmbench_lib

include $(BUILD_STATIC_LIBRARY)

#
# Build mhz on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= mhz.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := mhz

include $(BUILD_EXECUTABLE)

#
# Build bw_file_rd on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_file_rd.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_file_rd

include $(BUILD_EXECUTABLE)

#
# Build bw_mem on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_mem.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_mem

include $(BUILD_EXECUTABLE)

#
# Build bw_mmap_rd on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_mmap_rd.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_mmap_rd

include $(BUILD_EXECUTABLE)

#
# Build bw_pipe on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_pipe.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_pipe

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build bw_tcp on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_tcp.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_tcp

include $(BUILD_EXECUTABLE)
endif

#
# Build bw_unix on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_unix.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := bw_unix

include $(BUILD_EXECUTABLE)

#
# Build lat_cmd on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_cmd.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_cmd

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_connect on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_connect.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_connect

include $(BUILD_EXECUTABLE)
endif

#
# Build lat_ctx on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_ctx.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_ctx

include $(BUILD_EXECUTABLE)

#
# Build lat_fcntl on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fcntl.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_fcntl

include $(BUILD_EXECUTABLE)

#
# Build lat_fs on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fs.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_fs

include $(BUILD_EXECUTABLE)

#
# Build lat_mem_rd on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_mem_rd.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_mem_rd

include $(BUILD_EXECUTABLE)

#
# Build lat_mmap on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_mmap.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_mmap

include $(BUILD_EXECUTABLE)

#
# Build lat_ops on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_ops.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_ops

include $(BUILD_EXECUTABLE)

#
# Build lat_pipe on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_pipe.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_pipe

include $(BUILD_EXECUTABLE)

#
# Build lat_pagefault on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_pagefault.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_pagefault

include $(BUILD_EXECUTABLE)

#
# Build lat_proc on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_proc.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_proc

include $(BUILD_EXECUTABLE)

#
# Build lat_rand on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_rand.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_rand

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_tcp on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_tcp.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_tcp

include $(BUILD_EXECUTABLE)
endif

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_sem on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_sem.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_sem

include $(BUILD_EXECUTABLE)
endif

#
# Build lat_sig on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_sig.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_sig

include $(BUILD_EXECUTABLE)

#
# Build lat_syscall on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_syscall.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_syscall

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_udp on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_udp.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_udp

include $(BUILD_EXECUTABLE)
endif

#
# Build lat_unix on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_unix.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_unix

include $(BUILD_EXECUTABLE)

#
# Build lat_usleep on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_usleep.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags) -DTRUE=1 -DFALSE=0
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_usleep

include $(BUILD_EXECUTABLE)

#
# Build cache on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= cache.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := cache

include $(BUILD_EXECUTABLE)

#
# Build line on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= line.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := line

include $(BUILD_EXECUTABLE)

#
# Build lmdd on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lmdd.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lmdd

include $(BUILD_EXECUTABLE)

#
# Build tlb on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= tlb.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := tlb

include $(BUILD_EXECUTABLE)

#
# Build stream on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= stream.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lmstream

include $(BUILD_EXECUTABLE)

#
# Build memsize on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= memsize.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := memsize

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_select on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_select.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_select

include $(BUILD_EXECUTABLE)
endif

#
# Build lat_unix_connect on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_unix_connect.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_unix_connect

include $(BUILD_EXECUTABLE)

#
# Build lat_fifo on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fifo.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_fifo

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)
#
# Build lat_http on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_http.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := lat_http

include $(BUILD_EXECUTABLE)
endif

#
# Build par_mem on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= par_mem.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := par_mem

include $(BUILD_EXECUTABLE)

#
# Build par_ops on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= par_ops.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := par_ops

include $(BUILD_EXECUTABLE)

#
# Build enough on target
#
include $(CLEAR_VARS)

LOCAL_SRC_FILES:= enough.c
LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)
LOCAL_C_INCLUDES := $(common_target_c_includes)
LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE := enough

include $(BUILD_EXECUTABLE)

endif

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# 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.

ifeq ($(BUILD_LMBENCH),true)

LOCAL_PATH := $(call my-dir)

COMMON_CFLAGS := -DANDROID -DHAVE_uint

COMMON_LIBS := lmbench_lib

ANDROID_LMBENCH := true

# Build lmbench_lib

include $(CLEAR_VARS)

LOCAL_SRC_FILES := lib_unix.c lib_timing.c \

lib_mem.c lib_stats.c lib_debug.c getopt.c lib_sched.c

ifneq ($(ANDROID_LMBENCH),true)

LOCAL_SRC_FILES := $(LOCAL_SRC_FILES) lib_tcp.c lib_udp.c

endif

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lmbench_lib

include $(BUILD_STATIC_LIBRARY)

# Build mhz on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= mhz.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := mhz

include $(BUILD_EXECUTABLE)

# Build bw_file_rd on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_file_rd.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_file_rd

include $(BUILD_EXECUTABLE)

# Build bw_mem on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_mem.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_mem

include $(BUILD_EXECUTABLE)

# Build bw_mmap_rd on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_mmap_rd.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_mmap_rd

include $(BUILD_EXECUTABLE)

# Build bw_pipe on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_pipe.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_pipe

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build bw_tcp on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_tcp.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_tcp

include $(BUILD_EXECUTABLE)

endif

# Build bw_unix on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= bw_unix.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := bw_unix

include $(BUILD_EXECUTABLE)

# Build lat_cmd on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_cmd.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_cmd

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_connect on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_connect.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_connect

include $(BUILD_EXECUTABLE)

endif

# Build lat_ctx on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_ctx.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_ctx

include $(BUILD_EXECUTABLE)

# Build lat_fcntl on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fcntl.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_fcntl

include $(BUILD_EXECUTABLE)

# Build lat_fs on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fs.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_fs

include $(BUILD_EXECUTABLE)

# Build lat_mem_rd on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_mem_rd.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_mem_rd

include $(BUILD_EXECUTABLE)

# Build lat_mmap on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_mmap.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_mmap

include $(BUILD_EXECUTABLE)

# Build lat_ops on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_ops.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_ops

include $(BUILD_EXECUTABLE)

# Build lat_pipe on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_pipe.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_pipe

include $(BUILD_EXECUTABLE)

# Build lat_pagefault on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_pagefault.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_pagefault

include $(BUILD_EXECUTABLE)

# Build lat_proc on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_proc.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_proc

include $(BUILD_EXECUTABLE)

# Build lat_rand on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_rand.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_rand

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_tcp on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_tcp.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_tcp

include $(BUILD_EXECUTABLE)

endif

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_sem on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_sem.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_sem

include $(BUILD_EXECUTABLE)

endif

# Build lat_sig on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_sig.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_sig

include $(BUILD_EXECUTABLE)

# Build lat_syscall on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_syscall.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_syscall

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_udp on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_udp.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_udp

include $(BUILD_EXECUTABLE)

endif

# Build lat_unix on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_unix.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_unix

include $(BUILD_EXECUTABLE)

# Build lat_usleep on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_usleep.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags) -DTRUE=1 -DFALSE=0

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_usleep

include $(BUILD_EXECUTABLE)

# Build cache on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= cache.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := cache

include $(BUILD_EXECUTABLE)

# Build line on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= line.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := line

include $(BUILD_EXECUTABLE)

# Build lmdd on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lmdd.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lmdd

include $(BUILD_EXECUTABLE)

# Build tlb on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= tlb.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := tlb

include $(BUILD_EXECUTABLE)

# Build stream on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= stream.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lmstream

include $(BUILD_EXECUTABLE)

# Build memsize on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= memsize.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := memsize

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_select on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_select.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_select

include $(BUILD_EXECUTABLE)

endif

# Build lat_unix_connect on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_unix_connect.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_unix_connect

include $(BUILD_EXECUTABLE)

# Build lat_fifo on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_fifo.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_fifo

include $(BUILD_EXECUTABLE)

ifneq ($(ANDROID_LMBENCH),true)

# Build lat_http on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= lat_http.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := lat_http

include $(BUILD_EXECUTABLE)

endif

# Build par_mem on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= par_mem.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := par_mem

include $(BUILD_EXECUTABLE)

# Build par_ops on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= par_ops.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := par_ops

include $(BUILD_EXECUTABLE)

# Build enough on target

include $(CLEAR_VARS)

LOCAL_SRC_FILES:= enough.c

LOCAL_STATIC_LIBRARIES := $(COMMON_LIBS)

LOCAL_C_INCLUDES := $(common_target_c_includes)

LOCAL_CFLAGS := $(COMMON_CFLAGS) $(common_target_cflags)

LOCAL_MODULE_TAGS := eng

LOCAL_MODULE := enough

include $(BUILD_EXECUTABLE)

endif

编译LMbench代码

1	ndk-build NDK_PROJECT_PATH=/lmbench3

编译完成后的文件存放在“lmbench3\libs\armeabi”目录下面。

测试内存带宽

1	./bw_mem 16M rdwr

更详细的命令参数，参考bw_mem

参考链接

Windows下android-ndk-r10e执行ndk-gdb.py报告“ERROR: Non-debuggable application installed on the target device.”

使用命令：

1	#ndk-gdb.py --verbose

具体信息如下所示。

使用apk-tool反编译了一下APK包，AndroidManifest.xml中的“android:debuggable="true"”已经设置了，lib\armeabi目录下面也已经存在gdb.setup，gdbserver。奇怪了！使用pyScripter跟踪ndk-gdb.py，在684行附近发现，脚本找错目录了。

解决方法比较简单，拷贝一份“android-ndk-r10e\prebuilt\android-arm”，并且重新命名成为 “android-ndk-r10e\prebuilt\android-armeabi”即可。

Android 5.0 模拟器休眠唤醒（黑屏）

Android 5.0 模拟器默认在一分钟之内没有操作，就会关闭屏幕，出现黑屏的情况，如下图所示.

注意，这不是死掉了，只是休眠了而已。解除休眠的方式是按“ESC”或者“F7”按键即可。如果需要测试休眠的话，“F7”按键是个不错的选择。

NDK 链接第三方静态库的方法

将NDK编译的第三方静态拷贝到JNI目录下,在Android.mk中添加如下代码

以openssl静态库（libcrypto-static.a）为例

第一种链接方法：LOCAL_LDFLAGS := libcrypto-static.a（不推荐，有编译警告）

第二种链接方法：LOCAL_LDLIBS := libcrypto-static.a（不推荐，有编译警告）

第三种链接方法：（推荐）

include $(CLEAR_VARS)

LOCAL_MODULE := third_static_lib (可以随便起一个名字)

LOCAL_SRC_FILES := libcrypto-static.a

include $(PREBUILT_STATIC_LIBRARY)

//在你要编译的模块中引用third_static_lib

LOCAL_STATIC_LIBRARIES := third_static_lib

Windows 10下面Android模拟器无法拖动问题的解决

Windows 10下面Android模拟器往往会顶到桌面的最上面，也就是上面的最大最小关闭按钮那一栏超过屏幕的最上面的边缘，导致无法拖动。这个时候是非常痛苦的。简单的修正这个问题的办法如下：
在底层任务栏右击，点击“层叠显示窗口”就可以了。

Android模拟器, push文件到system下文件夹权限，空间，SO文件没有自动安装的问题

只读文件系统

需要把APK Push到模拟器下面的 /system/app 目录下面，报告

1 2	$ adb push app-debug.apk /system/app failed to copy 'app-debug.apk' to '/system/app/app-debug.apk': Read-only file system

解决方法

1	$ adb remount

内存不足

1 2	$ adb push app-debug.apk /system/app failed to copy 'app-debug.apk' to '/system/app/app-debug.apk': Out of memory

原因众说纷纭，基本上大家都没怎么深究，有些镜像没有这个问题，有些就有问题。
解决方法：
不要使用Eclipse或者Android Studio 或者 AVD Manager的图形界面去启动模拟器，而是使用下面的命令：

1	$Android_SDK_HOME/tools/emulator -partition-size 256 -avd "模拟器的名字"

包含SO的APK启动崩溃，日志中显示无法找到SO文件

原因，Android 设计问题，如果system/app下面的APK包含SO文件，不会自动安装，需要手工PUSH 到 "/system/lib"目录下面。

Android 5.0之后，最好推送到/system/priv-app目录

5.0之后的Android,最好推送到/system/priv-app目录。

Android 5.0之后，推送到系统目录后，没有自动安装应用

原因，Android 5.0之后，没有实时监视/system/priv-app目录的变化，只有在系统启动的时候才会扫描一下（重启系统很慢，我们可以按照如下操作节约时间），因此需要手工通知一下(有时候需要修改一下权限才可以)。

$ chown 644 /system/priv-app/my-app.apk

$ adb shell am restart

ERROR: Non-debuggable application installed on the target device. Please re-install the debuggable version!

注意，本文的描述，必须完全满足下面的条件，并且要确定已经在编译ndk的时候，已经使用了 NDK_DEBUG=1。并且打包APK的时候已经包含gdbserver,gdb.setup。

最近在调试NDK的时候，发现一个比较棘手的问题,一直报告错误“ERROR: Non-debuggable application installed on the target device. Please re-install the debuggable version! ”如下面所示：

$ ndk-gdb

WARNING: The shell running this script isn't bash. Although we try to avoid bashism in scripts, things can happen.

/path_ndk/ndk-gdb: 214: /path_ndk/ndk-gdb: Bad substitution

ERROR: Non-debuggable application installed on the target device.

Please re-install the debuggable version!

要求ndk-gdb输出详细的执行过程如下：

$ ndk-gdb.py --force --verbose
Android NDK installation path: /Android/android-ndk-r10e
ADB version found: Android Debug Bridge version 1.0.31
Using ADB flags: 
Using auto-detected project path: .
Found package name: com.xxxx.xxxx
ABIs targetted by application: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml    
Device API Level: 18
Device CPU ABIs: armeabi-v7a armeabi
Compatible device ABI: 
Using gdb setup init: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml    
Using toolchain prefix: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml    
Using app out directory: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml    
Found debuggable flag: true
ERROR: Could not find gdbserver binary under ./libs/
       This usually means you modified your AndroidManifest.xml to set
       the android:debuggable flag to 'true' but did not rebuild the
       native binaries. Please call 'ndk-build' to do so,
       *then* re-install to the device!

$ ndk-gdb.py --force --verbose

Android NDK installation path: /Android/android-ndk-r10e

ADB version found: Android Debug Bridge version 1.0.31

Using ADB flags:

Using auto-detected project path: .

Found package name: com.xxxx.xxxx

ABIs targetted by application: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml

Device API Level: 18

Device CPU ABIs: armeabi-v7a armeabi

Compatible device ABI:

Using gdb setup init: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml

Using toolchain prefix: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml

Using app out directory: Android NDK: WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml

Found debuggable flag: true

ERROR: Could not find gdbserver binary under ./libs/

This usually means you modified your AndroidManifest.xml to set

the android:debuggable flag to 'true' but did not rebuild the

native binaries. Please call 'ndk-build' to do so,

*then* re-install to the device!

可以观察到几个奇怪的地方，比如，报错的地方提示"ERROR: Could not find gdbserver binary under ./libs/" ,正常情况下，应该是"./libs/armeabi-v7a","./libs/armeabi"之类的东西，并且“Compatible device ABI: ”部分，是不应该输出为空的情况的。这说明，没有正确的读取到APK中的关于CPU相关的数据。另外，注意这句话“WARNING: APP_PLATFORM android-19 is larger than android:minSdkVersion 14 in ./AndroidManifest.xml”

庆幸的是，Google提供了Python版本的ndk-gdb 因此，我们在Ubuntu 15.04下面使用Spyder来跟踪调试，观察到底哪里出了问题。
设置如下：

调整需要跟踪调试的目录到工程中正常执行ndk-gdb所在的目录：

跟踪之后发现问题如下图所示：

也就是说，当AndroidManifest.xml中设置的版本号“<uses-sdk android:minSdkVersion="14" />”跟在 Application.mk 中设置的版本号“APP_PLATFORM := android-19”，当两者不一致的时候，会导致返回的APP_ABIS不是正常情况下的"[armeabi,armeabi-v7a]"这种形式的返回，而是返回了错误信息的详情，而这个仅仅是个警告而已，也就是说是Google 的一个BUG.

了解了原因，就比较好解决问题了，只要两者修改成为一致就可以了。

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“c++11”和“gnu++11”的差别：

不依赖文件名，查询到版本号

logcat的崩溃日志中能得到版本号

C/C++层的版本号变动，不要改动JAVA层的代码

针对上面的需求，我们逐个来提供解决方案：

不依赖文件名，查询到版本号

logcat的崩溃日志中能得到版本号，并且C/C++层的版本号变动，不要改动JAVA层的代码