Built successfully about a month ago, but failing again, seems to be some cups/gcc/glibc thing.

http://koji.fedoraproject.org/koji/buildinfo?buildID=248030

Tail snippet from build.log:
/bin/sh ../../../libtool --silent --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I../../.. -I../../../dcop -I../../../kdecore -I../../../kio/kssl -I../../../kjs -I../../.. -I../../../kio -I../../../kfile -I../../../dcop -I../../../libltdl -I../../../kdefx -I../../../kdecore -I../../../kdecore -I../../../kdecore/network -I../../../kdeui -I../../../kio -I../../../kio/kio -I../../../kio/kfile -I../../.. -I/usr/lib64/qt-3.3/include -I. -I/usr/include/kde   -DQT_THREAD_SUPPORT  -D_REENTRANT  -DNDEBUG -DNO_DEBUG -O2 -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fno-exceptions -fno-check-new -fno-common  -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION  -c -o libkdeinit_cupsdconf_la.all_cpp.lo libkdeinit_cupsdconf_la.all_cpp.cpp
cups-util.c: In function 'cupsGetConf':
cups-util.c:73:3: warning: implicit declaration of function 'snprintf' [-Wimplicit-function-declaration]
cups-util.c:73:3: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
cups-util.c:102:7: warning: implicit declaration of function 'fprintf' [-Wimplicit-function-declaration]
cups-util.c:102:7: warning: incompatible implicit declaration of built-in function 'fprintf' [enabled by default]
cups-util.c:102:15: error: 'stderr' undeclared (first use in this function)
cups-util.c:102:15: note: each undeclared identifier is reported only once for each function it appears in
cups-util.c: In function 'cupsPutConf':
cups-util.c:364:7: warning: incompatible implicit declaration of built-in function 'fprintf' [enabled by default]
cups-util.c:364:15: error: 'stderr' undeclared (first use in this function)
cups-util.c:401:2: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
cups-util.c:431:2: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
cups-util.c:450:2: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
cups-util.c: In function 'cups_local_auth':
cups-util.c:504:3: error: unknown type name 'FILE'
cups-util.c:515:9: warning: passing argument 1 of 'httpAddrLocalhost' from incompatible pointer type [enabled by default]
/usr/include/cups/http.h:410:13: note: expected 'const union http_addr_t *' but argument is of type 'struct http_t *'
cups-util.c:531:3: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
cups-util.c:532:3: warning: implicit declaration of function 'fopen' [-Wimplicit-function-declaration]
cups-util.c:532:11: warning: assignment makes pointer from integer without a cast [enabled by default]
cups-util.c:535:8: warning: assignment makes pointer from integer without a cast [enabled by default]
cups-util.c:545:3: warning: implicit declaration of function 'fgets' [-Wimplicit-function-declaration]
cups-util.c:546:3: warning: implicit declaration of function 'fclose' [-Wimplicit-function-declaration]
cups-util.c: In function 'cupsGetConf':
cups-util.c:245:10: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
make[4]: *** [cups-util.lo] Error 1