compiling fails thusly:

[...]
make[4]: Entering directory `/home/nils/devel/cvs/fedora/gegl/devel/gegl-0.1.0/operations/workshop/external'
if /bin/sh ../../../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../../..  -I../../.. -I../../../gegl -I../../../gegl -I../../../gegl/buffer -I../../../gegl/buffer -I../../../
gegl/operation -I../../../gegl/operation -I../../../gegl/property-types -I../../../gegl/property-types -I../../../gegl/module -I../../../gegl/module   -O2 -g -pipe -Wall -Wp,-D_FORTIF
Y_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Wdeclaration-after-statement -Wmissing-prototypes -Wmissing-declarations -Winit-self -Wpointer
-arith -Wold-style-definition -mmmx -msse -MT gluas_la-gluas.lo -MD -MP -MF ".deps/gluas_la-gluas.Tpo" \
          -c -o gluas_la-gluas.lo `test -f 'gluas.c' || echo './'`gluas.c; \
        then mv -f ".deps/gluas_la-gluas.Tpo" ".deps/gluas_la-gluas.Plo"; \
        else rm -f ".deps/gluas_la-gluas.Tpo"; exit 1; \
        fi
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I. -I../../.. -I../../.. -I../../../gegl -I../../../gegl -I../../../gegl/buffer -I../../../gegl/buffer -I../../../gegl/operation -I../../..
/gegl/operation -I../../../gegl/property-types -I../../../gegl/property-types -I../../../gegl/module -I../../../gegl/module -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fs
tack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Wdeclaration-after-statement -Wmissing-prototypes -Wmissing-declarations -Winit-self -Wpointer-arith -Wold-style-definiti
on -mmmx -msse -MT gluas_la-gluas.lo -MD -MP -MF .deps/gluas_la-gluas.Tpo -c gluas.c  -fPIC -DPIC -o .libs/gluas_la-gluas.o
gluas.c:20:28: error: glib/gi18n-lib.h: No such file or directory
[... followup errors snipped ...]

I'll attach a patch which fixes this error (missing glib2 include path) and similar ones for other files in the same directory.

BTW, is there a reason that gegl stays with interface version 0.0 instead of bumping this to 0.1 now?