Android build failure

[yaman-lunarg]

$ cmake -S . -B build \

-D CMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake
-D ANDROID_PLATFORM=26
-D CMAKE_ANDROID_ARCH_ABI=arm64-v8a
-D CMAKE_ANDROID_STL_TYPE=c++_static
-D ANDROID_USE_LEGACY_TOOLCHAIN_FILE=NO
-D CMAKE_BUILD_TYPE=Release
-D UPDATE_DEPS=ON
-G Ninja
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: D:/Users/Vector/AppData/Local/ndk/21.3.6528147/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: D:/Users/Vector/AppData/Local/ndk/21.3.6528147/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
Starting builds in D:\Personal\Projects\LunarG_repo\vulkanTools\external\Android\Release\armv7-a
Installed Vulkan-Headers (v1.3.280) in 0.6241400241851807 seconds
Installed volk (vulkan-sdk-1.3.280) in 1.1439473628997803 seconds
-- Found Git: D:/Program Files/Git/mingw64/bin/git.exe (found version "2.32.0.windows.2")
-- Configuring done (13.6s)
CMake Error at cube/CMakeLists.txt:229 (target_link_libraries):
Target "vkcube" links to:

Vulkan::Headers

but the target was not found. Possible reasons include:

* There is a typo in the target name.
* A find_package call is missing for an IMPORTED target.
* An ALIAS target is missing.

CMake Error at vulkaninfo/CMakeLists.txt:109 (target_link_libraries):
Target "vulkaninfo" links to:

Vulkan::Headers

but the target was not found. Possible reasons include:

* There is a typo in the target name.
* A find_package call is missing for an IMPORTED target.
* An ALIAS target is missing.

-- Generating done (0.0s)
CMake Generate step failed. Build files cannot be regenerated correctly.

[charles-lunarg]

Can you post the CMakeCache.txt, and any relevant CMake logs?

I can see that Vulkan-Headers was installed locally, but it seems that Vulkan-Tools was not made aware of it.

I assume the build is trying to use the clang compiler but I just want to confirm that.

[yaman-lunarg]

Found 3 cmake cache files:
CMakeCache.txt
CMakeCache (1).txt
CMakeCache (2).txt

[charles-lunarg]

Could you also include the D:/Users/Vector/AppData/Local/ndk/21.3.6528147/build/cmake/android.toolchain.cmake file?

Wait, this looks like an issue:
-D CMAKE_ANDROID_ARCH_ABI=arm64-v8a
Then later on, it appears `armv7-a' is where the Vulkan-Headers are being installed.

Starting builds in D:\Personal\Projects\LunarG_repo\vulkanTools\external\Android\Release\armv7-a

[yaman-lunarg]

Arm 7 vs 8 also caught my attention.
.txt to make github happy.
I have 3 different NDKs:
21.3.6528147 25.2.9519653 26.2.11394342
android.toolchain.cmake.txt

[charles-lunarg]

So excuse my ignorance, but do you need to use a specific ndk with each android platform? I see that its using the 21.3.xxx ndk while the ANDROID_PLATFORM is 26.

[yaman-lunarg]

I am very new to this android environment. Not sure how I ended up with three.

[charles-lunarg]

I'm not much better, and all of my android experience is on linux so I cannot rule out weirdness due to Windows.

[yaman-lunarg]

25.2.9519653 is probably related to Khronos Samples.

[yaman-lunarg]

Re-run the build using $ANDROID_NDK_HOME set to D:\Users\Vector\AppData\Local\ndk\26.2.11394342. Same error.