$ emerge --oneshot virtual/os-headers

log

pp.o: In function `Perl_pp_int':
pp.c:(.text+0x857b): undefined reference to `floor'
pp.c:(.text+0x85f1): undefined reference to `ceil'
pp.o: In function `Perl_pp_sin':
pp.c:(.text+0x8883): undefined reference to `sin'
pp.c:(.text+0x8931): undefined reference to `sqrt'
pp.c:(.text+0x89cf): undefined reference to `exp'
pp.c:(.text+0x89e7): undefined reference to `log'
pp.c:(.text+0x89ff): undefined reference to `cos'
pp.o: In function `Perl_pp_atan2':
pp.c:(.text+0xa675): undefined reference to `atan2'
pp.o: In function `Perl_pp_modulo':
pp.c:(.text+0xbafc): undefined reference to `floor'
pp.c:(.text+0xbb5b): undefined reference to `fmod'
pp.c:(.text+0xbcde): undefined reference to `floor'
pp.o: In function `Perl_pp_pow':
pp.c:(.text+0xbed2): undefined reference to `pow'
pp_sys.o: In function `S_gmtime64_r':
pp_sys.c:(.text+0x1b93): undefined reference to `fmod'
pp_sys.c:(.text+0x1bc6): undefined reference to `floor'
pp_sys.c:(.text+0x1bdb): undefined reference to `fmod'
pp_sys.c:(.text+0x1c0e): undefined reference to `floor'
pp_sys.c:(.text+0x1c23): undefined reference to `fmod'
pp_sys.c:(.text+0x1c56): undefined reference to `floor'
pp_sys.c:(.text+0x1c9a): undefined reference to `fmod'
pp_sys.c:(.text+0x1d05): undefined reference to `floor'
pp_sys.c:(.text+0x1e8a): undefined reference to `ceil'
pp_sys.c:(.text+0x2038): undefined reference to `ceil'
pp_sys.c:(.text+0x204b): undefined reference to `ceil'
pp_sys.c:(.text+0x205e): undefined reference to `ceil'
pp_sys.o: In function `Perl_pp_gmtime':
pp_sys.c:(.text+0x20da): undefined reference to `floor'
pp_pack.o: In function `S_pack_rec':
pp_pack.c:(.text+0x35a8): undefined reference to `floor'
pp_pack.c:(.text+0x35c8): undefined reference to `floor'
pp_pack.c:(.text+0x35ee): undefined reference to `floor'
collect2: ld returned 1 exit status
make: *** [miniperl] Error 1
 * ERROR: dev-lang/perl-5.16.0 failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of 'emerge --info =dev-lang/perl-5.16.0',
 * the complete build log and the output of 'emerge -pqv =dev-lang/perl-5.16.0'.
 * The complete build log is located at '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/temp/build.log'.
 * The ebuild environment file is located at '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/temp/environment'.
 * Working directory: '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/work/perl-5.16.0'
 * S: '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/work/perl-5.16.0'

>>> Failed to emerge dev-lang/perl-5.16.0, Log file:

>>>  '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/temp/build.log'

 * Messages for package dev-lang/perl-5.16.0:

 * ERROR: dev-lang/perl-5.16.0 failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of 'emerge --info =dev-lang/perl-5.16.0',
 * the complete build log and the output of 'emerge -pqv =dev-lang/perl-5.16.0'.
 * The complete build log is located at '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/temp/build.log'.
 * The ebuild environment file is located at '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/temp/environment'.
 * Working directory: '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/work/perl-5.16.0'
 * S: '/home/arc680/gentoo/var/tmp/portage/dev-lang/perl-5.16.0/work/perl-5.16.0'