The configure script is not yet prepared for Mac OS X/Darwin, I just made an experimental change. The script now emits: checking whether to build Xvfb DDX... yes checking whether to build Xnest DDX... checking for XNESTMODULES... yes yes checking whether to build Xorg DDX... yes <Mac OS X/Darwin change here> checking whether to build Xdmx DDX... checking for DMXMODULES... yes no checking for XORGCONFIG_DEP... yes Obviously before line #31974 (pkg_failed=no) code like { echo "$as_me:$LINENO: result: $XVFB" >&5 echo "${ECHO_T}$XVFB" >&6; } is needed. The same seems to be true for the Xdmx DDX case.
configure scripts are automatically generated from the configure.ac using GNU autoconf - patches to the configure scripts themselves aren't useful because of this - we need patches to configure.ac instead.
Please see http://xquartz.macosforge.org
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