[perl #43549] [BUG] Upgrade of flex and other software causes Parrot 'make' to fail  I think you're correct in attributing the problem to the glibc upgrade,  but make realclean did 
not lead to different results:

-lnsl -ldl -lm -lcrypt -lutil -lpthread -lrt 
/usr/lib/libc_nonshared.a(stat64.oS)(.text.__i686.get_pc_thunk.bx+0x0): In function 
`__i686.get_pc_thunk.bx':
: multiple definition of `__i686.get_pc_thunk.bx'
/usr/lib/gcc-lib/i486-linux/3.3.5/crtbeginS.o(.gnu.linkonce.t.__i686.get_pc_thunk.bx+0x0): 
first defined here
collect2: ld returned 1 exit status
make: *** [blib/lib/libparrot.so.0.4.13] Error 1

