libsdl2 @2.0.9 +x11 configure failure on mac os x 10.10

[photor]

--->  Computing dependencies for libsdl2
--->  Fetching archive for libsdl2
--->  Attempting to fetch libsdl2-2.0.9_1+x11.darwin_14.x86_64.tbz2 from https://packages.macports.org/libsdl2
--->  Attempting to fetch libsdl2-2.0.9_1+x11.darwin_14.x86_64.tbz2 from http://ywg.ca.packages.macports.org/mirror/macports/packages/libsdl2
--->  Attempting to fetch libsdl2-2.0.9_1+x11.darwin_14.x86_64.tbz2 from http://aus.us.packages.macports.org/macports/packages/libsdl2
--->  Fetching distfiles for libsdl2
--->  Attempting to fetch SDL2-2.0.9.tar.gz from https://distfiles.macports.org/libsdl2
--->  Verifying checksums for libsdl2                                           
--->  Extracting libsdl2
--->  Applying patches to libsdl2
--->  Configuring libsdl2
Error: Failed to configure libsdl2, consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libsdl2/libsdl2/work/SDL2-2.0.9/config.log
Error: Failed to configure libsdl2: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libsdl2/libsdl2/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

[jmroot (Joshua Root)]

It builds fine without +x11, FWIW.