JHBuild of 2.13.91 on fresh Ubuntu Breezy fails with errors in libxklavier. All other modules (except those that depend on libxklavier) build fine. Upgrading to libxklavier2.1 fixes these problems and the whole desktop builds.

Note that 2.1 was a bugfix upgrade to fix gcc4 compiler errors (which is what I was getting)

Errors:

make
if test "xno" = "xyes" ; then \
  doxygen Doxyfile; \
fi;
make  all-recursive
make[1]: Entering directory `/home/john/cvs/tarball-gnome2/libxklavier-2.0'
Making all in libxklavier
make[2]: Entering directory `/home/john/cvs/tarball-gnome2/libxklavier-2.0/libxklavier'
if /bin/sh ../libtool --mode=compile --tag=CC gcc -DHAVE_CONFIG_H -I. -I. -I..    -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2   -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier.lo -MD -MP -MF ".deps/xklavier.Tpo" -c -o xklavier.lo xklavier.c; \
then mv -f ".deps/xklavier.Tpo" ".deps/xklavier.Plo"; else rm -f ".deps/xklavier.Tpo"; exit 1; fi
mkdir .libs
 gcc -DHAVE_CONFIG_H -I. -I. -I.. -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2 -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier.lo -MD -MP -MF .deps/xklavier.Tpo -c xklavier.c  -fPIC -DPIC -o .libs/xklavier.o
if /bin/sh ../libtool --mode=compile --tag=CC gcc -DHAVE_CONFIG_H -I. -I. -I..    -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2   -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier_evt.lo -MD -MP -MF ".deps/xklavier_evt.Tpo" -c -o xklavier_evt.lo xklavier_evt.c; \
then mv -f ".deps/xklavier_evt.Tpo" ".deps/xklavier_evt.Plo"; else rm -f ".deps/xklavier_evt.Tpo"; exit 1; fi
 gcc -DHAVE_CONFIG_H -I. -I. -I.. -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2 -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier_evt.lo -MD -MP -MF .deps/xklavier_evt.Tpo -c xklavier_evt.c  -fPIC -DPIC -o .libs/xklavier_evt.o
if /bin/sh ../libtool --mode=compile --tag=CC gcc -DHAVE_CONFIG_H -I. -I. -I..    -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2   -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier_config.lo -MD -MP -MF ".deps/xklavier_config.Tpo" -c -o xklavier_config.lo xklavier_config.c; \
then mv -f ".deps/xklavier_config.Tpo" ".deps/xklavier_config.Plo"; else rm -f ".deps/xklavier_config.Tpo"; exit 1; fi
 gcc -DHAVE_CONFIG_H -I. -I. -I.. -Wall -Werror -DDATA_DIR=\"/opt/tarball-gnome2/share/libxklavier\" -I. -I/opt/tarball-gnome2/include -I/opt/tarball-gnome2/include/libxml2 -I -I.. -DXKB_HEADERS_PRESENT=1 -DENABLE_XKB_SUPPORT=1 -DENABLE_XMM_SUPPORT=1 -g -O2 -MT xklavier_config.lo -MD -MP -MF .deps/xklavier_config.Tpo -c xklavier_config.c  -fPIC -DPIC -o .libs/xklavier_config.o
cc1: warnings being treated as errors
xklavier_config.c: In function '_XklNodeGetXmlLangAttr':
xklavier_config.c:32: warning: pointer targets in passing argument 1 of 'strlen' differ in signedness
xklavier_config.c:32: warning: pointer targets in passing argument 2 of '__builtin_strcmp' differ in signedness
xklavier_config.c:32: warning: pointer targets in passing argument 2 of '__builtin_strcmp' differ in signedness
[SNIP - LOTS MORE]
xklavier_config.c:523: warning: pointer targets in passing argument 1 of 'strlen' differ in signedness
xklavier_config.c:523: warning: pointer targets in passing argument 1 of '__builtin_strcmp' differ in signedness
xklavier_config.c:523: warning: pointer targets in passing argument 1 of '__builtin_strcmp' differ in signedness
xklavier_config.c:523: warning: pointer targets in passing argument 1 of '__builtin_strcmp' differ in signedness
make[2]: *** [xklavier_config.lo] Error 1
make[2]: Leaving directory `/home/john/cvs/tarball-gnome2/libxklavier-2.0/libxklavier'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/john/cvs/tarball-gnome2/libxklavier-2.0'
make: *** [all] Error 2



Fix:

To build with libxklavier2.1 replace the libxklavier tarball in the gnome-2.13.91.modules file with the following
 
<tarball id="libxklavier" supports-non-srcdir-builds="no" version="2.1">
    <source href="http://internap.dl.sourceforge.net/sourceforge/gswitchit/libxklavier-2.1.tar.gz" md5sum="6a44ea49f958d7c9ad319edeea338798" size="452356"/>
  </tarball>