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Diffstat (limited to 'cmake/README.md')
| -rw-r--r-- | cmake/README.md | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/cmake/README.md b/cmake/README.md index 504c7bedfc..8a3ba27c3c 100644 --- a/cmake/README.md +++ b/cmake/README.md @@ -154,13 +154,20 @@ The specified path needs to point to a directory that contains an installed host In order to cross-compile Qt to Android, you need a host build (see instructions above) and an Android build. In addition, it is necessary to install the Android NDK. -The environment for Android can be set up using the following steps: +The following CMake variables are required for an Android build: + * `ANDROID_SDK_ROOT` must point to where the Android SDK is installed + * `CMAKE_TOOLCHAIN_FILE` must point to the toolchain file that comes with the NDK + * `QT_HOST_PATH` must point to a host installation of Qt - * Set the ``ANDROID_NDK_HOME`` environment variable to the path where you have installed the Android NDK. - * Set the ``ANDROID_SDK_HOME`` environment variable to the path where you have installed the Android SDK. +Call CMake with the following arguments: +`-DCMAKE_TOOLCHAIN_FILE=<path/to/ndk>/build/cmake/android.toolchain.cmake -DQT_HOST_PATH=/path/to/your/host/build -DANDROID_SDK_ROOT=<path/to/sdk> -DCMAKE_INSTALL_PREFIX=$INSTALL_PATH` -When running cmake in qtbase, pass -``-DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake -DQT_HOST_PATH=/path/to/your/host/build -DANDROID_SDK_ROOT=$ANDROID_SDK_HOME -DCMAKE_INSTALL_PREFIX=$INSTALL_PATH`` +The toolchain file is usually located below the NDK's root at "build/cmake/android.toolchain.cmake". +Instead of specifying the toolchain file you may specify `ANDROID_NDK_ROOT` instead. +This variable is exclusively used for auto-detecting the toolchain file. + +In a recent SDK installation, the NDK is located in a subdirectory "ndk_bundle" below the SDK's root +directory. In that situation you may omit `ANDROID_NDK_ROOT` and `CMAKE_TOOLCHAIN_FILE`. If you don't supply the configuration argument ``-DANDROID_ABI=...``, it will default to ``armeabi-v7a``. To target other architectures, use one of the following values: |