gradle runs xcodebuild at wrong directory -

i have few projects builded gradle. each project has own build.gradle file. i'm trying write common build script this:

task buildandroid(type: gradlebuild) {     buildfile = 'android/build.gradle'     tasks = ['buildall'] }  task buildios(type: gradlebuild) {     buildfile = 'ios/build.gradle'     tasks = ['debugbuild', 'releasebuild'] } 

android build works correct, ios build doesn't: xcodebuild runs in common project directory, not in ios subdir:

xcodebuild: error: directory /path/to/common/project/dir not contain xcode project. 

please advice me how build ios project in correct way.