dev-libs/libreport-2.0.13 fails to build with dev-libs/json-c-0.11. This is the same problem as was with pulseaudio: checking for JSON_C... no configure: error: Package requirements (json) were not met: No package 'json' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables JSON_C_CFLAGS and JSON_C_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.
An emerge --info and build.log would be nice
Fixed, thanks. + 28 Apr 2013; Alexandre Rostovtsev <tetromino@gentoo.org> + libreport-2.0.13.ebuild, +files/libreport-2.0.13-json-c-0.11.patch: + Fix building with json-c-0.11 (bug #467700, thanks to Markos Chandras for the + patch).