I have got this error when trying to build Wine 1.1.39 in Fedora 12 Code: + autoreconf configure:4993: error: possibly undefined macro: AS_VAR_APPEND If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. autoreconf: /usr/bin/autoconf failed with exit status: 1 In Fedora 12 installed autoconf-2.63.