android 编译boost动态库

有个android项目上需要使用到boost标准c++库,Boost库是一个可移植、提供源代码的C++库，作为标准库的后备，是C++标准化进程的发动机之一，所以想将其移植到android系统上进行编译。

直接从网上下载 boost1.52版本，然后写makefile。。。进行编译，，碰到无数的编译错误。求助于google网络，终于发现一个好东东：

一个通过NDK编译boost代码的git项目：

https://github.com/MysticTreeGames/Boost-for-Android

这里是使用NDK进行编译boost的但肯定对我有用吧。。经过一番折腾终于编译成功，，高兴,呵呵！

下面将主要的过程记录下来：

1、下载boost 源码：

由于https://github.com/MysticTreeGames/Boost-for-Android这里说明：

       Boost for Android

Boost for android is a set of tools to compile the main part of the Boost C++ Libraries for the Android platform.

Currently supported boost versions are 1.45.0, 1.48.0 and 1.49.0.

因此下载最新的 1.49 版本，下载完成后进行打补丁

2、下载补丁代码

https://github.com/MysticTreeGames/Boost-for-Android/tree/master/patches/boost-1_49_0

3、打补丁代码

      boost_1_49_0.tar.bz2 放在android的 external 下解压：

      tar -xjvf external/boost_1_49_0.tar.bz2

      将boost-1_49_0.patch放在external\boost_1_49_0下面根目录执行：

      patch -Np1 -d external/boost_1_49_0 < external/boost_1_49_0/boost-1_49_0.patch

4、编写boost的makefile文件，即Android.mk

      

 LOCAL_PATH:= $(call my-dir)

 common_SRC_FILES := \
         libs/thread/src/pthread/thread.cpp \
         libs/thread/src/pthread/once.cpp \

 common_SRC_FILES += \
     libs/filesystem/v3/src/codecvt_error_category.cpp \
     libs/filesystem/v3/src/operations.cpp \
     libs/filesystem/v3/src/path.cpp \
     libs/filesystem/v3/src/path_traits.cpp \
     libs/filesystem/v3/src/portability.cpp \
     libs/filesystem/v3/src/utf8_codecvt_facet.cpp \
     libs/system/src/error_code.cpp \
     libs/system/src/local_free_on_destruction \


 include $(CLEAR_VARS)
 LOCAL_MODULE:= libboost
 LOCAL_SRC_FILES := $(common_SRC_FILES)

 <span style="color:#ff0000;">prebuilt_stdcxx_PATH := prebuilts/ndk/current/sources/cxx-stl/gnu-libstdc++

 LOCAL_C_INCLUDES := \
     $(LOCAL_PATH)/boost \
     $(prebuilt_stdcxx_PATH)/include \
     $(prebuilt_stdcxx_PATH)/libs/$(TARGET_CPU_ABI)/include/ \

 LOCAL_C_INCLUDES += \
     $(prebuilt_stdcxx_PATH)/include \
     $(prebuilt_stdcxx_PATH)/libs/$(TARGET_CPU_ABI)/include/ \
     $(prebuilt_supccxx_PATH)/include

 LOCAL_CFLAGS += -fvisibility=hidden -lpthread
 LOCAL_CPPFLAGS += -fexceptions -frtti

 LOCAL_SHARED_LIBRARIES := libc libstdc++ libstlport

 LOCAL_LDFLAGS += -L$(prebuilt_stdcxx_PATH)/libs/$(TARGET_CPU_ABI) -lgnustl_static -lsupc++</span>

 LOCAL_MODULE_TAGS := optional
 include $(BUILD_SHARED_LIBRARY)

比较重要的是上面 红色 部分文字

最后编译生成：

target thumb C++: libboost <= external/boost_1_49_0/libs/thread/src/pthread/thread.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/thread/src/pthread/once.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/codecvt_error_category.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/operations.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/path.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/path_traits.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/portability.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/filesystem/v3/src/utf8_codecvt_facet.cpp
target thumb C++: libboost <= external/boost_1_49_0/libs/system/src/error_code.cpp
target SharedLib: libboost (out/target/product/godbox/obj/SHARED_LIBRARIES/libboost_intermediates/LINKED/libboost.so)
target Symbolic: libboost (out/target/product/godbox/symbols/system/lib/libboost.so)
target Strip: libboost (out/target/product/godbox/obj/lib/libboost.so)
Install: out/target/product/godbox/system/lib/libboost.so      

成功生成 libboost.so  库