ghostscript 9.22 autoreconf failed

[StadeRochelais17]

ghostscript 9.22 autoreconf: /opt/local/bin/aclocal failed with exit status: 1

It's a fresh install of MacPorts to install munin.

last log

--->  Configuring ghostscript
DEBUG: Preferred compilers: clang macports-clang-4.0
DEBUG: Using compiler 'Xcode Clang'
DEBUG: Executing org.macports.configure (ghostscript)
DEBUG: Environment: 
CC_PRINT_OPTIONS='YES'
CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_print_ghostscript/ghostscript/work/.CC_PRINT_OPTIONS'
CPATH='/opt/local/include'
LIBRARY_PATH='/opt/local/lib'
MACOSX_DEPLOYMENT_TARGET='10.13'
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_print_ghostscript/ghostscript/work/ghostscript-9.22" && autoreconf -fv 
DEBUG: system:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_print_ghostscript/ghostscript/work/ghostscript-9.22" && autoreconf -fv 
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: /opt/local/bin/aclocal --force 
autom4te: need GNU m4 1.4 or later: /usr/bin/m4
aclocal: error: echo failed with exit status: 1
autoreconf: /opt/local/bin/aclocal failed with exit status: 1
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_print_ghostscript/ghostscript/work/ghostscript-9.22" && autoreconf -fv 
Exit code: 1
Error: Failed to configure ghostscript: autoreconf failure: command execution failed
DEBUG: Error code: NONE
DEBUG: Backtrace: autoreconf failure: command execution failed
    while executing
"$procedure $targetname"
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_print_ghostscript/ghostscript/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port ghostscript failed

OSX version: 10.13.3
MacPorts version: 2.4.2
Xcode version: 9.2
m4 version: 1.4.6