gmp: configure failure

[rlegarda]

I tried to install fftw-3 but failed. After update to Sequoia, I made a fresh installation of Macports. This is the message and includes the config-log

The following dependencies will be installed: 
 db48
 gcc14
 gcc14-libcxx
 gcc_select
 gdbm
 gmp
 help2man
 isl
 ld64
 ld64-xcode
 libgcc
 libgcc14
 libmpc
 lz4
 mpfr
 p5.34-locale-gettext
 perl5.34
 texinfo
 zstd
Continue? [Y/n]: y
--->  Fetching archive for gmp
--->  Attempting to fetch gmp-6.3.0_0.darwin_24.arm64.tbz2 from https://packages.macports.org/gmp
--->  Attempting to fetch gmp-6.3.0_0.darwin_24.arm64.tbz2 from https://ywg.ca.packages.macports.org/mirror/macports/packages/gmp
--->  Attempting to fetch gmp-6.3.0_0.darwin_24.arm64.tbz2 from http://mirror.fcix.net/macports/packages/gmp
--->  Configuring gmp
Error: Failed to configure gmp: consult /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gmp/gmp/work/gmp-6.3.0/config.log
Error: Failed to configure gmp: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gmp/gmp/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.
Error: Processing of port fftw-3 failed

[rlegarda]

Failed to configure gmp, consult config.log

[ryandesign (Ryan Carsten Schmidt)]

In the log, I see:

conftest.cc:3:10: fatal error: 'iostream' file not found
    3 | #include <iostream>
      |          ^~~~~~~~~~

This is #70750. See ProblemHotlist#clts16 for the solution.