jdk7u-cpu linux, solaris 32 and mac builds failed since 2014-04-30:
http://rehudson.us.oracle.com/cgi-bin/buildview.cgi?user=&buildname=jdk7u-cpu&submit=by+build+name&debug=On

a sample log: http://rehudson.us.oracle.com:8080/hudson/job/7u-2-build-linux-amd64/1420/console
/usr/bin/gcc -Wl,--hash-style=both /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/launcher.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/launcher_md.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/configurationFile.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/launchFile.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/xmlparser.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/propertyParser.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/versionId.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/jfx_runtime.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/jfx_runtime_md.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/system.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/system_md.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/splash_md.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/msgString.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/splashFile.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/applicationIcon.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/base64.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/util.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/secureArgs.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/configcache_pd.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/expirationdialog.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/webstartblockdialog.o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/dialogutils.o -L/usr/X11R6//lib64 -lX11 -lnsl -ldl -lm -o /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/jre-image/bin/javaws
/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/system_md.o: In function `sysTempnam':
system_md.c:(.text+0xd38): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/obj/javaws/launcher.o: In function `main':
launcher.c:(.text+0x1a97): undefined reference to `_stprintf'
collect2: ld returned 1 exit status
gnumake[4]: *** [/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/build/linux-amd64/tmp/deploy/jre-image/bin/javaws] Error 1
gnumake[4]: Leaving directory `/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/deploy/make/javaws'
gnumake[3]: *** [all] Error 2
gnumake[3]: Leaving directory `/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/deploy/make/javaws'
gnumake[2]: *** [javaws-all] Error 2
gnumake[2]: Leaving directory `/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054/deploy/make'
gnumake[1]: *** [deploy-build] Error 2
gnumake[1]: Leaving directory `/HUDSON/workspace/7u-2-build-linux-amd64/jdk7u-cpu/1054'
gnumake: *** [build_product_image] Error 2