[BUG] ANDROID_NATIVE_API_LEVEL not work for NDK 23.1 new toolchain

[huangqinjin]

Environment Details

• NDK Version: 23.1.7779620
• Build system: CMake 3.21 for new toolchain
• Host OS: openSUSE tumbleweed
• ABI: any
• NDK API level: 25

Description

Run the following command for a minimal CMakeLists.txt:

cmake .. -DANDROID_NATIVE_API_LEVEL=25 -DCMAKE_TOOLCHAIN_FILE=/opt/android-sdk/ndk/${NDK}/build/cmake/android.toolchain.cmake -DANDROID_USE_LEGACY_TOOLCHAIN_FILE=${LEGACY}

NDK=23.1.7779620; LEGACY=OFF # --- FAIL

-- ANDROID_PLATFORM not set. Defaulting to minimum supported version 16.
-- Android: Targeting API '16' with architecture 'arm', ABI 'armeabi-v7a', and processor 'armv7-a'

NDK=23.1.7779620; LEGACY=ON # --- PASS

-- android-25 is an alias for android-24. Adjusting ANDROID_PLATFORM to match.

NDK=23.0.7599858; LEGACY=OFF # --- PASS

--         25 is an alias for         android-24.
-- Android: Targeting API '24' with architecture 'arm', ABI 'armeabi-v7a', and processor 'armv7-a'

NDK=23.0.7599858; LEGACY=ON # --- PASS

-- android-25 is an alias for android-24. Adjusting ANDROID_PLATFORM to match.

[rprichard]

I suspect the #1560 fix broke it:

• https://android-review.googlesource.com/c/platform/ndk/+/1810694
• https://android-review.googlesource.com/c/platform/ndk/+/1826816

Setting ANDROID_PLATFORM instead of ANDROID_NATIVE_API_LEVEL looks like a workaround.

Uploaded a possible fix: https://android-review.googlesource.com/c/platform/ndk/+/1897134

[DanAlbert]

Should be fixed in r23 build 8486889.