mkdir build && cd build
cmake ..
make

desktop % strace ./uexec hello others args here 2>&1 | grep exec
execve("./uexec", ["./uexec", "hello", "others", "args", "here"], 0x7ffc34ec02f0 /* 54 vars */) = 0
desktop % strace bash -c ./hello 2>&1 | grep exec
execve("/usr/bin/bash", ["bash", "-c", "./hello"], 0x7ffebecc3130 /* 54 vars */) = 0
newfstatat(AT_FDCWD, "/desktop/userland-exec/build", {st_mode=S_IFDIR|0755, st_size=4096, ...}, 0) = 0
newfstatat(AT_FDCWD, "/desktop/userland-exec", {st_mode=S_IFDIR|0755, st_size=4096, ...}, 0) = 0
execve("./hello", ["./hello"], 0x5fb22658e2a0 /* 54 vars */) = 0

mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Debug ..
make

mkdir build && cd build
cmake -DCMAKE_TOOLCHAIN_FILE=$NDK/build/cmake/android.toolchain.cmake \
      -DANDROID_ABI=arm64-v8a -DANDROID_PLATFORM=android-30 ..
make

desktop % adb push uexec hello /data/local/tmp
uexec: 1 file pushed, 0 skipped. 113.9 MB/s (22912 bytes in 0.000s)
hello: 1 file pushed, 0 skipped. 184.9 MB/s (6936 bytes in 0.000s)
2 files pushed, 0 skipped. 0.3 MB/s (29848 bytes in 0.090s)

desktop % adb shell
dm3q:/ $ cd /data/local/tmp
dm3q:/data/local/tmp $ chmod +x uexec
dm3q:/data/local/tmp $ ./hello
Hello World
dm3q:/data/local/tmp $ ./uexec hello
Hello World
dm3q:/data/local/tmp $