bundle exec ./bin/build_frameworks.rb failed to load command

[GTMYang]

bundle exec ./bin/build_frameworks.rb
options: {}
Package opencv2 is already installed. Skipping build.
Building leptonica for armv7 from /Users/luoyang/openalpr-ios/work/leptonica-1.71
configure: WARNING: if you wanted to set the --build type, don't use --host.
If a cross compiler is detected then cross compile mode will be used
configure: WARNING: using cross tools not prefixed with host triplet
bundler: failed to load command: ./bin/build_frameworks.rb (./bin/build_frameworks.rb)
RuntimeError: Child returned: pid 46968 exit 2
/Users/luoyang/openalpr-ios/lib/alpr/utils.rb:44:in execute' /Users/luoyang/openalpr-ios/lib/alpr/utils.rb:74:in log_execute'
/Users/luoyang/openalpr-ios/lib/alpr/package/automake.rb:147:in do_autoconf_build' /Users/luoyang/openalpr-ios/lib/alpr/package/automake.rb:58:in build_arch'
/Users/luoyang/openalpr-ios/lib/alpr/package/base.rb:53:in block in install' /Users/luoyang/openalpr-ios/lib/alpr/package/base.rb:52:in each'
/Users/luoyang/openalpr-ios/lib/alpr/package/base.rb:52:in install' /Users/luoyang/openalpr-ios/bin/build_frameworks.rb:69:in <top (required)>'