libxls @1.6.2_0: configure.ac:76: error: possibly undefined macro: AM_ICONV

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-14_x86_64-builder/builds/27089/steps/install-port/logs/stdio

autoreconf: export WARNINGS=
autoreconf: Entering directory '.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: /opt/local/bin/aclocal 
configure.ac:76: warning: macro 'AM_ICONV' not found in library
autoreconf: configure.ac: tracing
autoreconf: running: /opt/local/bin/glibtoolize --copy
glibtoolize: putting auxiliary files in '.'.
glibtoolize: copying file './ltmain.sh'
glibtoolize: Consider adding 'AC_CONFIG_MACRO_DIRS([m4])' to configure.ac,
glibtoolize: and rerunning glibtoolize and aclocal.
glibtoolize: Consider adding '-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
autoreconf: configure.ac: not using Intltool
autoreconf: configure.ac: not using Gtkdoc
autoreconf: running: /opt/local/bin/aclocal 
configure.ac:76: warning: macro 'AM_ICONV' not found in library
autoreconf: running: /opt/local/bin/autoconf
configure.ac:38: warning: The macro `AC_PROG_CC_C99' is obsolete.
configure.ac:38: You should run autoupdate.
./lib/autoconf/c.m4:1659: AC_PROG_CC_C99 is expanded from...
configure.ac:38: the top level
configure.ac:76: error: possibly undefined macro: AM_ICONV
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
autoreconf: error: /opt/local/bin/autoconf failed with exit status: 1