building android project produces make error 2

Question

I have recently purchased a book to assist in my development of C++ for Android which contained some code samples. However, when I come to build some of the sample code, I

Answer 1

Check your project path if is contain spaces and non-english characters.
I moved my project into somewhere without spaces, re-build it and works.

Answer 2

Android NDK r9 contains the following toolchains:

1. arm-linux-androideabi-4.6
2. arm-linux-androideabi-4.8
3. arm-linux-androideabi-clang3.2
4. arm-linux-androideabi-clang3.3
5. llvm-3.2
6. llvm-3.3
7. mipsel-linux-android-4.6
8. mipsel-linux-android-4.8
9. mipsel-linux-android-clang3.2
10. mipsel-linux-android-clang3.3
11. x86-4.6
12. x86-4.8
13. x86-clang3.2
14. x86-clang3.3

There is no toolchain for gcc 4.7. However, your Application.mk contains the line:

NDK_TOOLCHAIN_VERSION   := 4.7

Which tells the NDK to look for the 4.7 toolchain. And it fails.

So, the solution to your problem is changing the NDK_TOOLCHAIN_VERSION variable to 4.6, 4.8, clang3.2, clang3.3, or just clang (which will use the most recent version of Clang available in the NDK).