OCE destroot phase

[Mark Brethen]

OCE's Makefile does not appear to support the DESTDIR variable. In my first build it put all the files in /usr/local. So I tried to set the variable -DOCE_INSTALL_PREFIX:PATH=${destroot}${prefix} but this resulted in warning messages:

--->  Updating database of binaries
Warning: Error determining file type of `/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/OCE.framework/Versions/0.15/Resources/OCE-libraries-release.cmake': lstat(/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/OCE.framework/Versions/0.15/Resources/OCE-libraries-release.cmake):no such file or directory
Warning: A file belonging to the `oce' port is missing or unreadable. Consider reinstalling it.
Warning: Error determining file type of `/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/OCE.framework/Versions/0.15/Resources/OCE-libraries.cmake': lstat(/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/OCE.framework/Versions/0.15/Resources/OCE-libraries.cmake):no such file or directory
.
.
.
Warning: Error determining file type of `/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/share/oce-0.15/src/XmlOcafResource/XmlXcaf.xsd': lstat(/opt/local/var/macports/build/_Users_marbre_ports_graphics_oce/oce/work/destroot/opt/local/share/oce-0.15/src/XmlOcafResource/XmlXcaf.xsd):no such file or directory
Warning: A file belonging to the `oce' port is missing or unreadable. Consider reinstalling it.
--->  Scanning binaries for linking errors
--->  No broken files found.                             


Mark