A proof of concept to demonstrate the current challenges in getting meson to work with the Android NDK.
cross/build-armv7a.sh
This sets up the paths and drives the meson configuration and build. You should be able
to just change ANDROID_SDK_HOME and go.
- dependency() does not work at all like you would expect. It doesn't know about the cmake cross compilation environemnt
- find_library is overridden by explictly telling it where the lib paths are
- Driven with a shell script :)
- Must determine and remove variables that are not contributing to the build
- cmake subprojects don't work. -rpath $ORIGIN path is somehow not being substituted while everything else is configured correctly
ppetraki@vanguard:~/Sandbox/Games/meson-android-helloworld$ ./cross/build-armv7a.sh
building...
Toolchain: /home/ppetraki/Android/Sdk/ndk-bundle/build/cmake/android.toolchain.cmake
The Meson build system
Version: 0.51.999
Source dir: /home/ppetraki/Sandbox/Games/meson-android-helloworld
Build dir: /home/ppetraki/Sandbox/Games/meson-android-helloworld/armv7a-build
Build type: cross build
WARNING: Unknown options: "ANDROID_ABI, ANDROID_PLATFORM, ANDROID_STL, ANDROID_TOOLCHAIN, CMAKE_TOOLCHAIN_FILE"
Project name: android_helloworld
Project version: 1.0.0
C compiler for the build machine: ccache cc (gcc 7.4.0 "cc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0")
C linker for the build machine: GNU ld.bfd 2.30
C++ compiler for the build machine: ccache c++ (gcc 7.4.0 "c++ (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0")
C++ linker for the build machine: GNU ld.bfd 2.30
C compiler for the host machine: armv7a-linux-androideabi21-clang (clang 8.0.7 "Android (5220042 based on r346389c) clang version 8.0.7 (https://android.googlesource.com/toolchain/clang b55f2d4ebfd35bf643d27dbca1bb228957008617) (https://android.googlesource.com/toolchain/llvm 3c393fe7a7e13b0fba4ac75a01aa683d7a5b11cd) (based on LLVM 8.0.7svn)")
C linker for the host machine: GNU ld.bfd 2.27.0.20170315
C++ compiler for the host machine: armv7a-linux-androideabi21-clang++ (clang 8.0.7 "Android (5220042 based on r346389c) clang version 8.0.7 (https://android.googlesource.com/toolchain/clang b55f2d4ebfd35bf643d27dbca1bb228957008617) (https://android.googlesource.com/toolchain/llvm 3c393fe7a7e13b0fba4ac75a01aa683d7a5b11cd) (based on LLVM 8.0.7svn)")
C++ linker for the host machine: GNU ld.bfd 2.27.0.20170315
Build machine cpu family: x86_64
Build machine cpu: x86_64
Host machine cpu family: arm
Host machine cpu: armv7
Target machine cpu family: arm
Target machine cpu: armv7
Library android found: YES
Library log found: YES
Build targets in project: 2
Found ninja-1.8.2 at /usr/bin/ninja
ninja: Entering directory `armv7a-build'
[4/4] Linking target libandroid_helloworld_lib.so.
ppetraki@vanguard:~/Sandbox/Games/meson-android-helloworld$ file armv7a-build/libandroid_helloworld_lib.so
armv7a-build/libandroid_helloworld_lib.so: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, with debug_info, not stripped