fix for make.sh for android

[occia]

1. According to the issue Broken Android cross compilation using NDK r20 #1518, I made a fix for the broken Android compilation script;
2. The fix is based on building standalone Android NDK env first, as I think this is the most general way for old & new version NDK, see this link for more details;
3. I replace the gcc to clang as Android has no support for gcc now;
4. You can try NDK=/path/to/the/unzipped/ndk/dir ./make.sh cross-android arm64 [clean] to test it. The build process is well but there is a problem for make test, the failure is because of the lack of bingcc:

make -C tests
make[1]: Entering directory '/root/workspace/capstone_make/capstone/tests'
/bin/sh: 1: /root/workspace/capstone_make/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: not found
  CC      test_basic.o
  CC      test_detail.o
  CC      test_skipdata.o
make[1]: /root/workspace/capstone_make/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: Command not found
make[1]: /root/workspace/capstone_make/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: Command not found
Makefile:154: recipe for target 'test_basic.o' failed
make[1]: *** [test_basic.o] Error 127
make[1]: *** Waiting for unfinished jobs....
Makefile:154: recipe for target 'test_detail.o' failed
make[1]: *** [test_detail.o] Error 127
  CC      test_iter.o
make[1]: /root/workspace/capstone_make/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: Command not found
make[1]: /root/workspace/capstone_make/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: Command not found
Makefile:154: recipe for target 'test_skipdata.o' failed
make[1]: *** [test_skipdata.o] Error 127
Makefile:154: recipe for target 'test_iter.o' failed
make[1]: *** [test_iter.o] Error 127
make[1]: Leaving directory '/root/workspace/capstone_make/capstone/tests'
Makefile:366: recipe for target 'all' failed
make: *** [all] Error 2
r

[aquynh]

please remove this commented out line.

[occia]

removed

[aquynh]

merged, thanks!

[aquynh]

is this a standard place for clang??

[occia]

Yes, I think so. $(CROSS)/../../bin/clang means ${STANDALONE}/bin/clang, in that dir, you can find all versions of clang, as the following:

root@xxx:~/workspace/capstone# ls android-ndk-arm64-android-21/bin/*clang*
android-ndk-arm64-android-21/bin/aarch64-linux-android-clang
android-ndk-arm64-android-21/bin/aarch64-linux-android-clang++
android-ndk-arm64-android-21/bin/aarch64-linux-android21-clang
android-ndk-arm64-android-21/bin/aarch64-linux-android21-clang++
...
...

[TomieAi]

/root/capstone/android-ndk-arm64-android-21/aarch64-linux-android/bingcc: not found