CairoOutputDev.h includes cairo/cairo-ft.h, but "pkg-config --cflags cairo"
already returns %{_includedir}/cairo. To reproduce: Install cairo into a prefix
that is not part of the default paths that gcc uses (I used /opt/gnome2).

$ pkg-config --cflags cairo
-I/opt/gnome2/include/cairo
$ rpm -ql cairo |grep cairo-ft.h
/opt/gnome2/include/cairo/cairo-ft.h

Modifying CairoOutputDev.h to only include "cairo-ft.h" allows the build to succeed.

Full error message:
 g++ -DHAVE_CONFIG_H -I. -I. -I.. -I. -I.. -I/opt/gnome2/include/cairo
-I/usr/include/freetype2 -DDATADIR=\"/opt/gnome2/share\" -Wall -Wno-unused
-march=athlon-xp -m3dnow -msse -mfpmath=sse -mmmx -Os -pipe -fforce-addr
-fomit-frame-pointer -frerun-cse-after-loop -frerun-loop-opt -falign-functions=4
-maccumulate-outgoing-args -fpic -MT CairoOutputDev.lo -MD -MP -MF
.deps/CairoOutputDev.Tpo -c CairoOutputDev.cc  -fPIC -DPIC -o .libs/CairoOutputDev.o
In file included from CairoOutputDev.cc:31:
CairoOutputDev.h:18:28: cairo/cairo-ft.h: No such file or directory
In file included from CairoOutputDev.cc:31:
CairoOutputDev.h:146: 'FT_Library' is used as a type, but is not defined as a type.
CairoOutputDev.cc: In constructor `CairoOutputDev::CairoOutputDev()':
CairoOutputDev.cc:54: `ft_lib' undeclared (first use this function)
CairoOutputDev.cc:54: (Each undeclared identifier is reported only once for each
function it appears in.)