This is a semi-automatic report based on the latest archive rebuild results [1].
Apologies if it reaches you in error.
Excerpt from the buildlog:
checking whether i686-linux-gnu-gcc accepts -g... (cached) yes
checking for i686-linux-gnu-gcc option to accept ISO C89... (cached) none needed
checking dependency style of i686-linux-gnu-gcc... (cached) gcc3
checking for an ANSI C-conforming const... yes
checking for size_t... yes
checking for i686-linux-gnu-pkg-config... no
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for SCIM... yes
checking for SCIM_GTKUTILS... yes
checking for CHEWING... configure: error: Package requirements (chewing = 0.3.2) were not met:
Requested 'chewing = 0.3.2' but version of Chewing is 0.3.3
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively, you may set the environment variables CHEWING_CFLAGS
and CHEWING_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
make: *** [config.status] Error 1
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20120210-2332
FAILED [dpkg-buildpackage died]
The full buidlog can be found at https://launchpad.net/ubuntu/+archive/test-rebuild-20120201/+build/3170564/+files/buildlog_ubuntu-precise-i386.scim-chewing_0.3.3-2ubuntu1_FAILEDTOBUILD.txt.gz.
[1] http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20120201-precise.html
This debdiff solves problem by requesting chewing 0.3.3 from pkg-config.