Compiling for Android on Windows host

[ptagl]

Hi,

I successfully compiled and ran GammaRay for Windows and was able to inspect a desktop application.

Now I would like to do the same for an Android application, but I was not able to build GammaRay. I tried with this command:

set ANDROID_NDK=C:/Tools/android/android-ndk-r18b cmake -G "NMake Makefiles" -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchain-android.cmake -DGAMMARAY_BUILD_UI=OFF -DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7 -DCMAKE_INSTALL_PREFIX=C:/Qt/5.12.1/android_armv7 ..

but it returns some errors:

CMake Warning (dev) at cmake/Toolchain-android.cmake:139 (set): implicitly converting 'path' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:140 (set): implicitly converting 'path' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:141 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:142 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:143 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:144 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:145 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:146 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/Toolchain-android.cmake:147 (set): implicitly converting 'string' to 'STRING' type. Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project) This warning is for project developers. Use -Wno-dev to suppress it.

CMake Error at cmake/Toolchain-android.cmake:157 (message): Couldn't find the Android NDK Root in C:/Tools/android/android-ndk-r18b/platforms/android-14/arch-arm Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeDetermineSystem.cmake:90 (include) CMakeLists.txt:69 (project)

CMake Error: CMake was unable to find a build program corresponding to "NMake Makefiles". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool. CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage -- Configuring incomplete, errors occurred!

Am I doing something wrong?

Thanks for your help!

[winterz]

not your fault. Things have changed since we wrote the cross-compile instructions for Android.

Try -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake where ANDROID_NDK=/path/to/android-ndk

Let me know if that works . I will change the instructions accordingly.

[winterz]

make sure to clean your build directory first.

[ptagl]

Hi @winterz, thanks for your help!

I tried again with:

cmake -G "NMake Makefiles" -DCMAKE_TOOLCHAIN_FILE=%ANDROID_NDK%/build/cmake/android.toolchain.cmake -DGAMMARAY_BUILD_UI=OFF -DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7 -DCMAKE_INSTALL_PREFIX=C:/Qt/5.12.1/android_armv7 ..

but it fails with this error message:

-- Performing Test HAVE_GXX_CXX11 -- Performing Test HAVE_GXX_CXX11 - Success CMake Error at CMakeLists.txt:382 (find_package): Could not find a package configuration file provided by "Qt5Core" (requested version 5.5) with any of the following names:

Qt5CoreConfig.cmake
qt5core-config.cmake

Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set "Qt5Core_DIR" to a directory containing one of the above files. If "Qt5Core" provides a separate development package or SDK, be sure it has been installed.

-- Configuring incomplete, errors occurred! See also "C:/Projects/KDAB/GammaRay/android-build/CMakeFiles/CMakeOutput.log". See also "C:/Projects/KDAB/GammaRay/android-build/CMakeFiles/CMakeError.log".

I also tried with different paths like:

-DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7/lib/cmake -DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7/lib/cmake/Qt5Core/

but had no luck.

Which path should I use to make it work?

[winterz]

also make sure that the qmake from Qt5.12.1 is first in your %PATH% i.e. set "PATH=c:\Qt\5.12.1\android_armv7\bin;%PATH%" I also think -DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7/lib/cmake should work

[ptagl]

I tried integrating your suggestions, just to recap:

set ANDROID_NDK=C:/Tools/android/android-ndk-r18b set "PATH=c:/Qt/5.12.1/android_armv7/bin;%PATH%" cmake -G "NMake Makefiles" -DCMAKE_TOOLCHAIN_FILE=%ANDROID_NDK%/build/cmake/android.toolchain.cmake -DGAMMARAY_BUILD_UI=OFF -DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/android_armv7/lib/cmake -DCMAKE_INSTALL_PREFIX=C:/Qt/5.12.1/android_armv7 ..

But I got the same error. I also tried adding

set Qt5Core_DIR=C:\Qt\5.12.1\android_armv7\lib\cmake\Qt5Core

as suggested in the error message but it didn't work.

Can it depend on Qt version? It seems like it's looking for the version 5.5...

[winterz]

I updated the Install.txt instructions and tested.
update your checkout and try again following the new instructions.

[ptagl]

Hi @winterz, thanks a lot for your help.

I tried to use the updated instructions and ran these commands:

set ANDROID_NDK=C:/Tools/android/android-ndk-r18b C:/Tools/Android/android-ndk-r18b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe

I got an error related to clang for some reason:

-- ANDROID_PLATFORM not set. Defaulting to minimum supported version 16. -- Check for working CXX compiler: C:/Tools/Android/android-ndk-r18b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe CMake Error: Generator: execution of make failed. Make command was: nmake /nologo cmTC_8fcaf\fast && -- Check for working CXX compiler: C:/Tools/Android/android-ndk-r18b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe -- broken CMake Error at C:/Program Files/CMake/share/cmake-3.15/Modules/CMakeTestCXXCompiler.cmake:53 (message): The C++ compiler

"C:/Tools/Android/android-ndk-r18b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe"

is not able to compile a simple test program.

It fails with the following output:

Change Dir: C:/Projects/KDAB/GammaRay/android-build/CMakeFiles/CMakeTmp

Run Build Command(s):nmake /nologo cmTC_8fcaf\fast && Impossibile trovare il file specificato
Generator: execution of make failed. Make command was: nmake /nologo cmTC_8fcaf\fast &&

CMake will not be able to correctly generate this project. Call Stack (most recent call first): CMakeLists.txt:69 (project)

-- Configuring incomplete, errors occurred! See also "C:/Projects/KDAB/GammaRay/android-build/CMakeFiles/CMakeOutput.log". See also "C:/Projects/KDAB/GammaRay/android-build/CMakeFiles/CMakeError.log".

[bog-dan-ro]

Might be a problem with Qt/NDK versions(s). Try to use Qt 5.12.6 with the latest NDK (r20). Also using QtCreator 4.11 to compile it should make your life easier.