Error emerging netpbm

No shortage of errors while doing these updates. Here is the latest:

In file included from /usr/include/signal.h:33,

from parallel.c:43:

/usr/include/bits/sigset.h:117: parse error before `]'

/usr/include/bits/sigset.h: In function `__sigismember':

/usr/include/bits/sigset.h:117: number of arguments doesn't match prototype

/usr/include/bits/sigset.h:103: prototype declaration

/usr/include/bits/sigset.h:117: `__sig' undeclared (first use in this function)

/usr/include/bits/sigset.h:117: (Each undeclared identifier is reported only once

/usr/include/bits/sigset.h:117: for each function it appears in.)

/usr/include/bits/sigset.h:117: `__set' undeclared (first use in this function)

/usr/include/bits/sigset.h:117: warning: control reaches end of non-void function

/usr/include/bits/sigset.h: At top level:

/usr/include/bits/sigset.h:118: parse error before `]'

/usr/include/bits/sigset.h: In function `__sigaddset':

/usr/include/bits/sigset.h:118: number of arguments doesn't match prototype

/usr/include/bits/sigset.h:104: prototype declaration

/usr/include/bits/sigset.h:118: `__sig' undeclared (first use in this function)

/usr/include/bits/sigset.h:118: `__set' undeclared (first use in this function)

/usr/include/bits/sigset.h:118: warning: left-hand operand of comma expression has no effect

/usr/include/bits/sigset.h: At top level:

/usr/include/bits/sigset.h:119: parse error before `]'

/usr/include/bits/sigset.h: In function `__sigdelset':

/usr/include/bits/sigset.h:119: number of arguments doesn't match prototype

/usr/include/bits/sigset.h:105: prototype declaration

/usr/include/bits/sigset.h:119: `__sig' undeclared (first use in this function)

/usr/include/bits/sigset.h:119: `__set' undeclared (first use in this function)

/usr/include/bits/sigset.h:119: warning: left-hand operand of comma expression has no effect

In file included from /usr/include/math.h:350,

from /home/installers/netpbm-10.11.3/converter/ppm/ppmtompeg/headers/all.h:67,

from parallel.c:44:

/usr/include/bits/mathinline.h: At top level:

/usr/include/bits/mathinline.h:427: warning: no previous declaration for `__atan2l'

/usr/include/bits/mathinline.h:442: warning: no previous declaration for `__sqrtl'

/usr/include/bits/mathinline.h:448: warning: no previous declaration for `__fabsl'

make[3]: *** [parallel.o] Error 1

make[3]: Leaving directory `/home/installers/netpbm-10.11.3/converter/ppm/ppmtompeg'

make[2]: *** [ppmtompeg/all] Error 2

make[2]: Leaving directory `/home/installers/netpbm-10.11.3/converter/ppm'

make[1]: *** [ppm/all] Error 2

make[1]: Leaving directory `/home/installers/netpbm-10.11.3/converter'

make: *** [converter/all] Error 2

Fix was:

emerge -av glibc