fftw-3 @3.3.8+gcc7 Failed to Configure

[nhchan]

I encountered this error whilst executing "port upgrade outdated". Here are the relevant lines of the terminal output:

--->  Computing dependencies for fftw-3
--->  Fetching archive for fftw-3
--->  Attempting to fetch fftw-3-3.3.8_0+gcc7.darwin_17.x86_64.tbz2 from https://packages.macports.org/fftw-3
--->  Attempting to fetch fftw-3-3.3.8_0+gcc7.darwin_17.x86_64.tbz2 from http://ywg.ca.packages.macports.org/mirror/macports/packages/fftw-3
--->  Attempting to fetch fftw-3-3.3.8_0+gcc7.darwin_17.x86_64.tbz2 from http://sea.us.packages.macports.org/macports/packages/fftw-3
--->  Fetching distfiles for fftw-3
--->  Attempting to fetch fftw-3.3.8.tar.gz from https://distfiles.macports.org/fftw-3
--->  Verifying checksums for fftw-3                                                 
--->  Extracting fftw-3
--->  Configuring fftw-3
Error: Failed to configure fftw-3, consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_fftw-3/fftw-3/work/fftw-3.3.8/config.log
Error: Failed to configure fftw-3: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_fftw-3/fftw-3/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

I have attached the config.log and main.log files.

Please kindly advise. Thank you!