perl-Gnome2-GConf-1.044-21.fc23 fails to build in F23: "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- GConf.bs blib/arch/auto/Gnome2/GConf/GConf.bs 644 Generating POD... Can't load 'blib/arch/auto/Gnome2/GConf/GConf.so' for module Gnome2::GConf: blib/arch/auto/Gnome2/GConf/GConf.so: undefined symbol: gconf_engine_key_is_writable at /usr/lib/perl5/DynaLoader.pm line 193. at -e line 0. Compilation failed in require. Difference between working and failing build root: Removed packages: acl-2.2.52-7.fc22 audit-libs-2.4.1-1.fc22 binutils-2.25-5.fc22 bzip2-1.0.6-14.fc22 bzip2-libs-1.0.6-14.fc22 coreutils-8.23-6.fc22 cpio-2.11-33.fc22 curl-7.40.0-1.fc22 dbus-glib-0.104-1.fc22 diffutils-3.3-9.fc22 dwz-0.11-4.fc22 expat-2.1.0-10.fc22 file-5.22-1.fc22 file-libs-5.22-1.fc22 fipscheck-1.4.1-7.fc22 fipscheck-lib-1.4.1-7.fc22 gawk-4.1.1-6.fc22 GConf2-3.2.6-11.fc22 GConf2-devel-3.2.6-11.fc22 gdb-7.8.90.20150214-7.fc23 gdbm-1.11-4.fc22 gdbm-devel-1.11-4.fc22 glib2-2.43.90-1.fc23 glib2-devel-2.43.90-1.fc23 glibc-2.21.90-3.fc23 glibc-common-2.21.90-3.fc23 glibc-devel-2.21.90-3.fc23 glibc-headers-2.21.90-3.fc23 gnupg2-2.1.2-1.fc23 grep-2.21-3.fc22 groff-base-1.22.3-3.fc22 guile-2.0.11-4.fc22 gzip-1.6-6.fc22 info-5.2-8.fc22 keyutils-libs-1.5.9-4.fc22 kmod-19-1.fc22 kmod-libs-19-1.fc22 libacl-2.2.52-7.fc22 libarchive-3.1.2-10.fc22 libattr-2.4.47-9.fc22 libcom_err-1.42.12-2.fc23 libcurl-7.40.0-1.fc22 libdb-5.3.28-9.fc22 libdb-devel-5.3.28-9.fc22 libdb-utils-5.3.28-9.fc22 libgcrypt-1.6.2-2.fc22 libidn-1.29-2.fc22 libpwquality-1.2.4-2.fc22 libuser-0.60-6.fc22 libxml2-2.9.2-3.fc23 libxml2-devel-2.9.2-3.fc23 lua-5.3.0-1.fc22 make-4.0-3.1.fc22 ncurses-5.9-18.20150214.fc23 ncurses-base-5.9-18.20150214.fc23 ncurses-libs-5.9-18.20150214.fc23 nss-3.17.4-3.fc22 nss-sysinit-3.17.4-3.fc22 nss-tools-3.17.4-3.fc22 openssl-libs-1.0.1k-2.fc22 p11-kit-0.23.1-1.fc23 p11-kit-trust-0.23.1-1.fc23 patch-2.7.4-1.fc22 perl-5.20.2-321.fc23 perl-devel-5.20.2-321.fc23 perl-libs-5.20.2-321.fc23 perl-macros-5.20.2-321.fc23 perl-Pod-Escapes-1.06-321.fc23 pkgconfig-0.28-6.fc22 psmisc-22.21-5.fc22 rpm-4.12.0.1-7.fc23 rpm-build-4.12.0.1-7.fc23 rpm-build-libs-4.12.0.1-7.fc23 rpm-libs-4.12.0.1-7.fc23 rpm-plugin-selinux-4.12.0.1-7.fc23 sed-4.2.2-9.fc22 shared-mime-info-1.4-2.fc22 sqlite-3.8.8-2.fc22 tar-1.28-3.fc22 unzip-6.0-20.fc23 which-2.20-10.fc23 Added packages: acl-2.2.52-8.fc23 audit-libs-2.4.1-2.fc23 binutils-2.25-6.fc23 bzip2-1.0.6-15.fc23 bzip2-libs-1.0.6-15.fc23 coreutils-8.23-7.fc23 cpio-2.11-34.fc23 curl-7.40.0-2.fc23 dbus-glib-0.104-2.fc23 diffutils-3.3-10.fc23 dwz-0.11-5.fc23 expat-2.1.0-11.fc23 file-5.22-2.fc23 file-libs-5.22-2.fc23 fipscheck-1.4.1-8.fc23 fipscheck-lib-1.4.1-8.fc23 gawk-4.1.1-7.fc23 GConf2-3.2.6-12.fc23 GConf2-devel-3.2.6-12.fc23 gdb-7.8.90.20150214-8.fc23 gdbm-1.11-5.fc23 gdbm-devel-1.11-5.fc23 glib2-2.43.90-2.fc23 glib2-devel-2.43.90-2.fc23 glibc-2.21.90-3.fc23.1 glibc-common-2.21.90-3.fc23.1 glibc-devel-2.21.90-3.fc23.1 glibc-headers-2.21.90-3.fc23.1 gnupg2-2.1.2-2.fc23 grep-2.21-4.fc23 groff-base-1.22.3-4.fc23 guile-2.0.11-5.fc23 gzip-1.6-7.fc23 info-5.2-9.fc23 keyutils-libs-1.5.9-5.fc23 kmod-19-2.fc23 kmod-libs-19-2.fc23 libacl-2.2.52-8.fc23 libarchive-3.1.2-11.fc23 libattr-2.4.47-10.fc23 libcom_err-1.42.12-3.fc23 libcurl-7.40.0-2.fc23 libdb-5.3.28-10.fc23 libdb-devel-5.3.28-10.fc23 libdb-utils-5.3.28-10.fc23 libgcrypt-1.6.2-3.fc23 libidn-1.29-3.fc23 libpwquality-1.2.4-3.fc23 libuser-0.60-7.fc23 libxml2-2.9.2-4.fc23 libxml2-devel-2.9.2-4.fc23 lua-5.3.0-2.fc23 make-4.0-4.1.fc23 ncurses-5.9-19.20150214.fc23 ncurses-base-5.9-19.20150214.fc23 ncurses-libs-5.9-19.20150214.fc23 nss-3.17.4-4.fc23 nss-sysinit-3.17.4-4.fc23 nss-tools-3.17.4-4.fc23 openssl-libs-1.0.1k-3.fc23 p11-kit-0.23.1-2.fc23 p11-kit-trust-0.23.1-2.fc23 patch-2.7.4-2.fc23 perl-5.20.2-322.fc23 perl-devel-5.20.2-322.fc23 perl-libs-5.20.2-322.fc23 perl-macros-5.20.2-322.fc23 perl-Pod-Escapes-1.06-322.fc23 pkgconfig-0.28-7.fc23 psmisc-22.21-6.fc23 rpm-4.12.0.1-7.fc23.1 rpm-build-4.12.0.1-7.fc23.1 rpm-build-libs-4.12.0.1-7.fc23.1 rpm-libs-4.12.0.1-7.fc23.1 rpm-plugin-selinux-4.12.0.1-7.fc23.1 sed-4.2.2-10.fc23 shared-mime-info-1.4-3.fc23 sqlite-3.8.8-3.fc23 tar-1.28-4.fc23 unzip-6.0-21.fc23 which-2.20-11.fc23
I will remove support for the non-existing symbol. I believe the bug was there for many years but never noticed until F23 enabled hardened build flags with non-lazy DSO relocations.