API_VERSION_TO_USE = $$(ANDROID_API_VERSION)
isEmpty(API_VERSION_TO_USE): API_VERSION_TO_USE = $$API_VERSION
isEmpty(API_VERSION_TO_USE): API_VERSION_TO_USE = android-21

ANDROID_JAR_FILE = $$ANDROID_SDK_ROOT/platforms/$$API_VERSION_TO_USE/android.jar
!exists($$ANDROID_JAR_FILE) {
    ANDROID_API_VERSION = $$section(API_VERSION_TO_USE, -, 1, 1) # Get version number from android-XY to ensure numeric comparison
    ANDROID_API_VERSIONS = $$files($$ANDROID_SDK_ROOT/platforms/*)
    for (VERSION, ANDROID_API_VERSIONS) {
        BASENAME = $$basename(VERSION)
        BASENAME = $$section(BASENAME, -, 1, 1)
        greaterThan(BASENAME, $$ANDROID_API_VERSION): ANDROID_API_VERSION = $$BASENAME
    }
    API_VERSION_TO_USE = android-$$ANDROID_API_VERSION
    ANDROID_JAR_FILE = $$ANDROID_SDK_ROOT/platforms/$$API_VERSION_TO_USE/android.jar
}
!exists($$ANDROID_JAR_FILE) {
    error("No suitable Android SDK platform found. Minimum version is $${API_VERSION_TO_USE}.")
}
JAVACLASSPATH += $$ANDROID_JAR_FILE