Compiling and linking error when using NDK r10 to build cocos2d-x v3.2
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用ndk r10编译cocos2dx 3.2的时候会报出如下错误信息:
NDK r10 has problem, refer to [this ticket](https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=73907). We suggest you not use it.
linking error
After fixing the compiling error, you will meet linking error when building lua test cases or new lua projects
I have created a ticket in Android issue system for it. And NDK developers confirmed it is a bug of NDK r10. And he gave two ways to work around it:
requires makefile changes to drop libgcc.a with command line reads "-nodefaultlibs -lstdc++ -latomic -ldl -lm -lc -lcompiler_rt_static"
Because we don't use standalone toolchain, so changing makefile doesn't work for cocos2d-x.
use libc++_shared.so and add
LIBCXX_USE_GABIXX:=true
in Application.mk which force rebuild libc++ to use gabi++This method requires to use shared library and modify
Cocos2dxActivity.java
to load dependened shared library. We don't want to modify like this, because:- We haven't used shared library before which means we haven't tested
- It will make .apk 0.13M bigger then using static library
- Google guy will fix it in next NDK version
conclusion
We suggest you not to use NDK r10. Please use NDK r9d instead.
If you want to use NDK r10, the following steps can help you work around it:
- Change
long int
tossize_t
in the declaration ofBundleReader::tell()
. You can refer to this pull request for detail information. - Change
APP_STL:=c++_static
toAPP_STL:=c++_shared
, addLIBCXX_USE_GABIXX:=true
inApplication.mk
, and modify your java activity code to loadlibc++_shared.so
. You can refer to this commitfor more detail information
按照conclusion修改完之后,还需要在AppActivity中进行如下修改:
讲AppActivity修改成如下形式就行了:
public class AppActivity extends Cocos2dxActivity {
static {
System.loadLibrary("compiler_rt_shared");
System.loadLibrary("c++_shared");
}
}
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