构建Android源代码(Building android source code)

我从source.android.com下载Android的源和随后在Mac OS X上的指令设置编译环境，一切都很好，当我运行make它给了我下面的错误，除了

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=4.0.1
TARGET_PRODUCT=full
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
HOST_ARCH=x86
HOST_OS=darwin
HOST_BUILD_TYPE=release
BUILD_ID=ITL41D
============================================
host C++: aapt <= frameworks/base/tools/aapt/AaptAssets.cpp
frameworks/base/tools/aapt/AaptAssets.cpp:2161:38: warning: unused parameter 'bundle' [-Wunused-parameter]
AaptAssets::slurpResourceZip(Bundle* bundle, const char* filename)
                                     ^
In file included from frameworks/base/tools/aapt/AaptAssets.cpp:5:
In file included from frameworks/base/tools/aapt/AaptAssets.h:10:
In file included from frameworks/base/include/utils/AssetManager.h:25:
frameworks/base/include/utils/KeyedVector.h:193:17: error: use of undeclared identifier 'indexOfKey'
    ssize_t i = indexOfKey(key);
                ^
                this->
frameworks/base/tools/aapt/AaptAssets.h:446:46: note: in instantiation of member function 'android::DefaultKeyedVector<android::String8, android::sp<AaptSymbols> >::valueFor' requested here
        sp<AaptSymbols> sym = mNestedSymbols.valueFor(name);
                                             ^
frameworks/base/include/utils/KeyedVector.h:66:29: note: must qualify identifier to find this declaration in dependent base class
            ssize_t         indexOfKey(const KEY& key) const;
                            ^
1 warning and 1 error generated.
make: *** [out/host/darwin-x86/obj/EXECUTABLES/aapt_intermediates/AaptAssets.o] Error 1

我刚开始在Android的，所以不要有任何线索，任何小的帮助也将不胜感激

Answer 1:

只是为了扩大对皮特的回答，万一真的有人想知道：

该indexOfKey在DefaultKeyVector的父类，KeyedVector定义。对于类模板，函数调用期间编译时未在运行时解决。错误发生，因为在该点indexOfKey被调用时，编译器将不知道该模板的功能可能会被定位。这是基础和派生类什么样子：

template <typename KEY, typename VALUE>
class KeyedVector
{
...
    ssize_t indexOfKey(const KEY& key) const;
...


template <typename KEY, typename VALUE>
class DefaultKeyedVector : public KeyedVector<KEY, VALUE>
{
...

而问题的电话：

template<typename KEY, typename VALUE> inline
const VALUE& DefaultKeyedVector<KEY,VALUE>::valueFor(const KEY& key) const {
    ssize_t i = indexOfKey(key);
...

最有可能的，使用旧的MacOS的SDK编译器（或其他编译器）的作品，因为它很可能只是猜测，而不是失败在一些基础类的函数存在。然而，这是不规范的行为。

更多信息从这个铛进入，并从C ++ FAQ 。