The Official Radare2 Book | страница 8

$ echo NDK=/tmp/android-ndk > ~/.r2androidrc

./sys/android-build.sh arm64-static

You can build for different architectures by changing the argument to ./sys/android-build.sh. Run the script without any argument to see the accepted values.

Meson needs a configuration file that describes the cross compilation environment (e.g. meson-android.ini). You can adjust it as necessary, but something like the following should be a good starting point:

[binaries]

c = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android28-clang'

cpp = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android28-clang++'

ar = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ar'

as = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-as'

ranlib = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ranlib'

ld = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ld'

strip = '/tmp/android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-strip'

pkgconfig = 'false'

[properties]

sys_root = '/tmp/android-ndk/sysroot'

[host_machine]

system = 'android'

cpu_family = 'arm'

cpu = 'aarch64'

endian = 'little'

Now setup the build directory with meson as usual:

$

CFLAGS="-static" LDFLAGS="-static" meson --default-library static

--prefix=/tmp/android-dir -Dblob=true build --cross-file

./meson-android.ini

A bit of explanation about all the options:

   • CFLAGS="-static", LDFLAGS="-static", --default-library static: this ensure that libraries and binaries are statically compiled, so you do not need to properly set LD_* environment variables in your Android environment to make it find the right libraries. Binaries have everything they need inside.