Usage:
   ./build.sh [OPTIONS]

OPTIONS:
   -h             Show this message
   -d             Debug mode. Print all executed commands.
   -o OUTDIR      Output directory. Default is 'out'
   -b BRANCH      Latest revision on git branch. Overrides -r. Common branch names are 'branch-heads/nn', where 'n' is the release number.
   -r REVISION    Git SHA revision. Default is latest revision.
   -t TARGET OS   The target os for cross-compilation. Default is the host OS such as 'linux', 'mac', 'win'. Other values can be 'android', 'ios'.
   -c TARGET CPU  The target cpu for cross-compilation. Default is 'x64'. Other values can be 'x86', 'arm64', 'arm'.
   -n CONFIGS     Build configurations, space-separated. Default is 'Debug Release'. Other values can be 'Debug', 'Release'.
   -e             Compile WebRTC with RTTI enabled. Default is with RTTI not enabled.
   -g             [Linux] Compile 'Debug' WebRTC with iterator debugging disabled. Default is enabled but it might add significant overhead.
   -D             [Linux] Generate a debian package
   -F PATTERN     Allow customize package filename through a pattern
   -P PATTERN     Allow customize package name through a pattern
   -V PATTERN     Allow customize package version through a pattern

The PATTERN is a string that can use the following tokens:
   %p%            The system platform.
   %to%           Target os.
   %tc%           Target cpu.
   %b%            The branch if it was specified.
   %r%            Revision.
   %sr%           Short revision.
   %rn%           The associated revision number.
   %da%           Debian architecture.