I get:

Making all in docs
make[2]: Entering directory `/home/pacho/pango-1.28.1/docs'
make  all-am
make[3]: Entering directory `/home/pacho/pango-1.28.1/docs'
gtk-doc: Scanning header files
gtk-doc: Compiling scanner
libtool: compile:  gcc -DPANGO_ENABLE_BACKEND -DPANGO_ENABLE_ENGINE -I.. -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/freetype2 -g -O2 -Wall -g -O2 -Wall -c pango-scan.c  -fPIC -DPIC -o .libs/pango-scan.o
gtk-doc: Linking scanner
libtool: link: gcc -g -O2 -Wall .libs/pango-scan.o -o .libs/pango-scan  ../pango/.libs/libpangocairo-1.0.so -L/usr/lib64 /usr/lib64/libcairo.so /usr/lib64/libpixman-1.so /usr/lib64/libglitz-glx.so -lGL /usr/lib64/libglitz.so /usr/lib64/libpng12.so /usr/lib64/libxcb-render-util.so /usr/lib64/libxcb-render.so /usr/lib64/libXrender.so /usr/lib64/libX11.so /usr/lib64/libxcb.so /usr/lib64/libXau.so /usr/lib64/libXdmcp.so /home/pacho/pango-1.28.1/pango/.libs/libpangoft2-1.0.so /home/pacho/pango-1.28.1/pango/.libs/libpango-1.0.so /usr/lib64/libgobject-2.0.so /usr/lib64/libgthread-2.0.so -lpthread /usr/lib64/libgmodule-2.0.so -ldl -lrt /usr/lib64/libglib-2.0.so -lm /usr/lib64/libfontconfig.so /usr/lib64/libfreetype.so -lz /usr/lib64/libexpat.so -pthread -Wl,-rpath -Wl,/home/pacho/pango/lib
.libs/pango-scan.o: In function `get_object_types':
/home/pacho/pango-1.28.1/docs/pango-scan.c:94: undefined reference to `pango_xft_font_get_type'
/home/pacho/pango-1.28.1/docs/pango-scan.c:95: undefined reference to `pango_xft_font_map_get_type'
/home/pacho/pango-1.28.1/docs/pango-scan.c:96: undefined reference to `pango_xft_renderer_get_type'
collect2: ld returned 1 exit status
Linking of scanner failed: 
make[3]: *** [scan-build.stamp] Error 1
make[3]: Leaving directory `/home/pacho/pango-1.28.1/docs'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/pacho/pango-1.28.1/docs'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/pacho/pango-1.28.1'
make: *** [all] Error 2

Thanks for solving this