[MacPorts] #56512: opensc: +doc variant fails to compile on 0.18.0

[MacPorts]

#56512: opensc: +doc variant fails to compile on 0.18.0
--------------------+--------------------
 Reporter:  blair   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  opensc
--------------------+--------------------
 I'm seeing a configure failure after the upgrade to 0.18.0:

 {{{
 configure: WARNING: use --enable-x509dir=DIR
 checking winscard.h usability... yes
 checking winscard.h presence... no
 configure: WARNING: winscard.h: accepted by the compiler, rejected by the
 preprocessor!
 configure: WARNING: winscard.h: proceeding with the compiler's result
 checking for winscard.h... yes
 checking pcsclite.h usability... yes
 checking pcsclite.h presence... no
 configure: WARNING: pcsclite.h: accepted by the compiler, rejected by the
 preprocessor!
 configure: WARNING: pcsclite.h: proceeding with the compiler's result
 checking for pcsclite.h... yes
 checking XSLTPROC requirement... configure: error: Missing
 xslstylesheetsdir
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_security_opensc/opensc/work/opensc-0.18.0"
 && ./configure --prefix=/opt/local --enable-doc --disable-openpace
 --enable-readline --disable-static --enable-pcsc --enable-sm --with-
 pkcs11-provider=/opt/local/lib/opensc-pkcs11.so
 Exit code: 1
 Error: Failed to configure opensc, consult
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_security_opensc/opensc/work/opensc-0.18.0/config.log
 Error: Failed to configure opensc: configure failure: command execution
 failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_security_opensc/opensc/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56512>
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