Current perl-OpenOffice-UNO does build in rawhide:

+ /usr/bin/perl Makefile.PL INSTALLDIRS=vendor 'OPTIMIZE=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches  -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables'
Checking if your kit is complete...
Looks good
Writing Makefile for OpenOffice::UNO
+ make -j5
/usr/bin/perl /usr/share/perl5/vendor_perl/ExtUtils/xsubpp  -C++ -typemap /usr/share/perl5/ExtUtils/typemap -typemap typemap  UNO.xs > UNO.xsc && mv UNO.xsc UNO.c
/usr/lib/libreoffice/sdk/bin/cppumaker -Gc -BUCR -O/builddir/build/BUILD/OpenOffice-UNO-0.07/blib/uno -Tcom.sun.star.lang.IllegalArgumentException -Tcom.sun.star.uno.RuntimeException -Tcom.sun.star.uno.TypeClass -Tcom.sun.star.uno.XAggregation -Tcom.sun.star.uno.XComponentContext -Tcom.sun.star.lang.XInitialization -Tcom.sun.star.lang.XMultiComponentFactory -Tcom.sun.star.lang.XMultiServiceFactory -Tcom.sun.star.registry.XRegistryKey -Tcom.sun.star.lang.XServiceInfo -Tcom.sun.star.lang.XSingleComponentFactory -Tcom.sun.star.lang.XSingleServiceFactory -Tcom.sun.star.lang.XTypeProvider -Tcom.sun.star.uno.XWeak -Tcom.sun.star.lang.XComponent -Tcom.sun.star.bridge.XUnoUrlResolver -Tcom.sun.star.container.XHierarchicalNameAccess -Tcom.sun.star.uno.DeploymentException -Tcom.sun.star.registry.XSimpleRegistry -Tcom.sun.star.reflection.XIdlClass -Tcom.sun.star.reflection.XIdlReflection -Tcom.sun.star.beans.XMaterialHolder -Tcom.sun.star.script.XTypeConverter -Tcom.sun.star.beans.XIntrospection -Tcom.sun.star.script.XInvocation2 -Tcom.sun.star.lang.WrappedTargetRuntimeException "/usr/lib/libreoffice/ure/share/misc/types.rdb"
/usr/bin/perl -pe "s<UNO_PATH></usr/lib/libreoffice/ure/share/misc>" -- perluno.tmpl > perluno
Illegal option the option is unknown-BUCR
make: *** [blib/uno/headers] Error 1

I think contemporary cppumaker does not understand -BUCR option. Incompatible LibreOffice version?