ANDROID源码编译错误及解决方法

1. 编译ANDROID源码出现以下错误：

E:/program/Android_source/system/core/include/cutils/threads.h:60:4: error: #error "no thread_store_t implementation for your platform !!"

分析源码system/core/include/threads.h发现以下代码，定义HAVE_PTHREADS宏解决问题（LOCAL_CFLAGS += -DHAVE_PTHREADS）

#ifdef HAVE_PTHREADS

#include  <pthread.h>

typedef struct {

    pthread_mutex_t   lock;

    int               has_tls;

    pthread_key_t     tls;

} thread_store_t;

#define  THREAD_STORE_INITIALIZER  { PTHREAD_MUTEX_INITIALIZER, 0, 0 }

#elif defined HAVE_WIN32_THREADS

#include <windows.h>

typedef struct {

    int               lock_init;

    int               has_tls;

    DWORD             tls;

    CRITICAL_SECTION  lock;

} thread_store_t;

#define  THREAD_STORE_INITIALIZER  { 0, 0, 0, {0, 0, 0, 0, 0, 0} }

#else

#  error  "no thread_store_t implementation for your platform !!"

#endif

2. 编译Skia出现 E:/program/Android_source/frameworks/base/include/utils/threads.h:345: error: 'pthread_rwlock_t' does not name a type

通过分析源码发现需定义SK_BUILD_FOR_ANDROID_NDK并且需要把HAVE_PTHREADS宏的定义去掉，呵呵，也就是2和3的问题都可以通过定义SK_BUILD_FOR_ANDROID_NDK宏解决。

3. 编译base/libs/utils出现 E:/program/Android_source/frameworks/base/include/utils/threads.h:345: error: 'pthread_rwlock_t' does not name a type错误

加入头文件地址LOCAL_C_INCLUDES += platform/bionic/libc/include