Source: gtkperf Version: 0.40+ds-2 Severity: important gtkperf ships a broken, outdated, embedded copy of PKG_CHECK_MODULES. This bug report comes without a patch, because the upstream macro as shipped in the pkg-config package is already fixed. Please remove your copy of PKG_CHECK_MODULES from aclocal.m4 and rebuild ./configure with the fixed upstream version. Alternatively, update your copy and register the embedded copy (see https://wiki.debian.org/EmbeddedCodeCopies for how to register it).
Helmut