checking for clock_gettime... no
checking for mach_absolute_time... no
checking for sysctl... yes
checking for abort... yes
checking for sinl... yes
checking for cosl... yes
checking whether drand48 is declared... yes
checking whether memalign is declared... no
checking whether posix_memalign is declared... yes
checking whether sinl is declared... no
checking whether cosl is declared... no
checking for _rtc intrinsic... no
checking for isnan... yes
checking whether C compiler accepts -mpreferred-stack-boundary=4... yes
checking whether the stack is at least 8-byte aligned by gcc... checking whether C compiler accepts -malign-double... yes
yes
checking for i686-pc-linux-gnu-g77... (cached) i686-pc-linux-gnu-gfortran
checking whether we are using the GNU Fortran 77 compiler... (cached) no
checking whether i686-pc-linux-gnu-gfortran accepts -g... (cached) no
checking how to get verbose linking output from i686-pc-linux-gnu-gfortran... -v
checking for Fortran 77 libraries of i686-pc-linux-gnu-gfortran... 
checking for dummy main to link with Fortran 77 libraries... none
checking for Fortran 77 name-mangling scheme... configure: error: cannot compile a simple Fortran program
See `config.log' for more details.

!!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! /var/tmp/portage/sci-libs/fftw-3.1.2/work/fftw-3.1.2-double/config.log

!!! ERROR: sci-libs/fftw-3.1.2 failed.
Call stack:
  ebuild.sh, line 1580:   Called dyn_compile
  ebuild.sh, line 945:   Called src_compile
  fftw-3.1.2.ebuild, line 67:   Called econf '--enable-shared' '--enable-threads' '--enable-sse2'
  ebuild.sh, line 541:   Called die

!!! econf failed
!!! If you need support, post the topmost build error, and the call stack if relevant.