The libuuid and libblkid have been split from e2fsprogs in fc12,

el6, and ch5 systems.  Additionally, correct ZFS filesystem detection
has not yet been added to these packages so for now disable blkid.

zfs.spec.in

@@ -22,8 +22,13 @@ for the zfs file system.
 %package devel
 Summary:         ZFS File System User Headers
 Group:           Development/Libraries
+%if %{defined ch5} || %{defined el6} || %{defined fc12}
+Requires:        zlib libuuid libblkid
+BuildRequires:   zlib-devel libuuid-devel libblkid-devel
+%else
 Requires:        zlib e2fsprogs
 BuildRequires:   zlib-devel e2fsprogs-devel
+%endif
 
 %description devel
 The %{name}-devel package contains the header files needed for building
@@ -42,7 +47,7 @@ various system profiling tools to facilitate an in depth analysis.
 %prep
 %setup
 %build
-%configure --with-config=user --with-blkid
+%configure --with-config=user --without-blkid
 make
 
 %install