+ AC_MSG_CHECKING([Mac OS X target version])
+ # We honor MACOSX_DEPLOYMENT_TARGET in the environment, emulating gcc's
+ # behaviour. But we provide a command line option to override it and
+ # we default to wide support instead of supporting only the build platform.
+ #
+ # Currently if you ask for 10.5 you will get a deprecation warning
+ # when building the CoreAudio support code. For the time being the
+ # answer to this is "don't do that then". If a good reason to ask
+ # for a 10.5 deployment target emerges then this will be fixed.
+ if test -z "$MACOSX_DEPLOYMENT_TARGET"; then
+ MACOSX_DEPLOYMENT_TARGET=10.0
+ fi
+ AC_ARG_WITH([deployment-target],
+ [AS_HELP_STRING([--with-deployment-target=TARGET],
+ [set target OS X version])],
+ [MACOSX_DEPLOYMENT_TARGET=$withval])
+ # Convert to desired format
+ underscored=`echo $MACOSX_DEPLOYMENT_TARGET|sed 's/\./_/'`
+ minver="MAC_OS_X_VERSION_$underscored"
+ AC_MSG_RESULT([$minver])
+ AC_DEFINE_UNQUOTED([MAC_OS_X_VERSION_MIN_REQUIRED], [$minver],
+ [define to minimum version of Mac OS X to support])