CFLAGS="-g -O2 -D_FORTIFY_SOURCE=2" ./configure --enable-server --enable-proxy --enable-agent --enable-ipv6 \
      --with-net-snmp --with-unixodbc --with-libxml2 --with-libcurl --with-ssh2 \
      --with-openipmi --with-ldap --with-mysql --with-fping --with-javagw --with-openssl --prefix=`pwd` 2>&1 | tee my_configure.out

checking for ICONV support... configure: error: Unable to use iconv (libiconv check failed)

find /usr/include/ -name '*iconv*'
/usr/include/iconv.h
/usr/include/sys/iconv.h

find /lib -name '*iconv*'
/lib/libkiconv.so.4

find /usr/lib -name '*iconv*'
/usr/lib/i18n/libiconv_none.so.4
/usr/lib/i18n/libiconv_none.so
/usr/lib/i18n/libiconv_std.so.4
/usr/lib/i18n/libiconv_std.so
/usr/lib/libkiconv_p.a
/usr/lib/libkiconv.so
/usr/lib/libkiconv.a

$ pkg info pkgconf
pkgconf-1.3.7,1
Name           : pkgconf
Version        : 1.3.7,1
Installed on   : Wed Aug  2 12:11:30 2017 MSK
Origin         : devel/pkgconf
Architecture   : FreeBSD:11:amd64
Prefix         : /usr/local
Categories     : devel
Licenses       : ISCL
Maintainer     : [email protected]
WWW            : https://github.com/pkgconf/pkgconf
Comment        : Utility to help to configure compiler and linker flags
Shared Libs provided:
        libpkgconf.so.2
Annotations    :
Flat size      : 205KiB
Description    :
pkgconf is a program which helps to configure compiler and linker flags for
development frameworks. It is similar to pkg-config, but was written from
scratch in Summer of 2011 to replace pkg-config, which now needs itself to
build itself.

WWW: https://github.com/pkgconf/pkgconf

pkg info
alsa-lib-1.1.2                 ALSA compatibility library
apache24-2.4.27                Version 2.4.x of Apache web server
apcupsd-3.14.14_2              Set of programs for controlling APC UPS
apr-1.6.2.1.6.0                Apache Portability Library
autoconf-2.69_1                Automatically configure source code on many Un*x platforms
autoconf-wrapper-20131203      Wrapper script for GNU autoconf
automake-1.15.1                GNU Standards-compliant Makefile generator
automake-wrapper-20131203      Wrapper script for GNU automake
avahi-app-0.6.31_5             Service discovery on a local network
bash-4.4.12_2                  GNU Project's Bourne Again SHell
bigreqsproto-1.1.2             BigReqs extension headers
binutils-2.28,1                GNU binary tools
bison-3.0.4,1                  Parser generator from FSF, (mostly) compatible with Yacc
bootstrap-openjdk-r351880_1    Oracle\'s Java 6 virtual machine release under the GPL v2
ca_root_nss-3.32               Root certificate bundle from the Mozilla Project
cairo-1.14.8_1,2               Vector graphics library with cross-device output support
check-0.11.0                   Unit test framework for C
cmake-3.8.2                    Cross-platform Makefile generator
cmake-modules-3.8.2            Modules and Templates for CMake
compositeproto-0.4.2           Composite extension headers
convmv-2.03                    Convert filenames from one encoding to another
cups-2.2.3                     Common UNIX Printing System
curl-7.54.1                    Command line tool and library for transferring data with URLs
cvs-1.20120905_4               Version control system
damageproto-1.2.1              Damage extension headers
db5-5.3.28_6                   Oracle Berkeley DB, revision 5.3
dbus-1.10.16_1                 Message bus system for inter-application communication
dbus-glib-0.108                GLib bindings for the D-BUS messaging system
dejavu-2.37                    Bitstream Vera Fonts clone with a wider range of characters
dhcping-1.2                    Send DHCP request to DHCP server for monitoring purposes
dialog4ports-0.1.6             Console Interface to configure ports
dmidecode-3.1_1                Tool for dumping DMI (SMBIOS) contents in human-readable format
docbook-1.5                    Meta-port for the different versions of the DocBook DTD
docbook-sgml-4.5_1             DocBook SGML DTD
docbook-xml-5.0_3              DocBook XML DTD
docbook-xsl-1.76.1_3           XSL DocBook stylesheets
dri2proto-2.8                  DRI2 prototype headers
dri3proto-1.0                  DRI3 prototype headers
expat-2.2.1                    XML 1.0 parser written in C
fixesproto-5.0                 Fixes extension headers
font-util-1.3.1                Create an index of X font files in a directory
fontconfig-2.12.1,1            XML-based font configuration API for X Windows
fontsproto-2.1.3,1             Fonts extension headers
fping-3.16                     Quickly ping multiple hosts without flooding the network
freetype2-2.8                  Free and portable TrueType font rendering engine
gdbm-1.13_1                    GNU database manager
gettext-runtime-0.19.8.1_1     GNU gettext runtime libraries and programs
gettext-tools-0.19.8.1         GNU gettext development and translation tools
glib-2.50.2_4,1                Some useful routines of C programming (current stable version)
glproto-1.4.17                 GLX extension headers
gmake-4.2.1_1                  GNU version of 'make' utility
gmp-6.1.2                      Free library for arbitrary precision arithmetic
gnome_subr-1.0                 Common startup and shutdown subroutines used by GNOME scripts
gnutls-3.5.13                  GNU Transport Layer Security library
gobject-introspection-1.50.0,1 Generate interface introspection data for GObject libraries
help2man-1.47.4                Automatically generating simple manual pages from program output
html2text-1.3.2a               Converts HTML documents into plain text
indexinfo-0.2.6                Utility to regenerate the GNU info page index
inputproto-2.3.2               Input extension headers
intltool-0.51.0_1              Tools to internationalize various kinds of data files
ipmitool-1.8.18_1              CLI to manage IPMI systems
iso8879-1986_3                 Character entity sets from ISO 8879:1986 (SGML)
java-zoneinfo-2017.b           Updated Java timezone definitions
javavmwrapper-2.5_2            Wrapper script for various Java Virtual Machines
jpeg-turbo-1.5.1               SIMD-accelerated JPEG codec which replaces libjpeg
jsoncpp-1.8.1                  JSON reader and writer library for C++
kbproto-1.0.7                  KB extension headers
ldb-1.1.29_1                   LDAP-like embedded database
libICE-1.0.9_1,1               Inter Client Exchange library for X11
libSM-1.2.2_3,1                Session Management library for X11
libX11-1.6.5,1                 X11 library
libXau-1.0.8_3                 Authentication Protocol library for X11
libXaw-1.0.13,2                X Athena Widgets library
libXdamage-1.1.4_3             X Damage extension library
libXdmcp-1.1.2                 X Display Manager Control Protocol library
libXext-1.3.3_1,1              X11 Extension library
libXfixes-5.0.3                X Fixes extension library
libXfont-1.5.2,2               X font library
libXfont2-2.0.1                X font library
libXi-1.7.9,1                  X Input extension library
libXmu-1.1.2_3,1               X Miscellaneous Utilities libraries
libXp-1.0.3,1                  X print library
libXpm-3.5.12                  X Pixmap library
libXrender-0.9.10              X Render extension library
libXt-1.1.5,1                  X Toolkit library
libXtst-1.2.3                  X Test extension
libXv-1.0.11,1                 X Video Extension library
libXvMC-1.0.10                 X Video Extension Motion Compensation library
libXxf86vm-1.1.4_1             X Vidmode Extension
libarchive-3.3.1,1             Library to create and read several streaming archive formats
libclc-0.3.0.20170225          Required library functions for OpenCL C programming language
libdaemon-0.14_1               Lightweight C library that eases the writing of UNIX daemons
libdrm-2.4.82,1                Userspace interface to kernel Direct Rendering Module services
libedit-3.1.20170329_2,1       Command line editor library
libepoxy-1.4.3                 Library to handle OpenGL function pointer management
libevent-2.1.8                 API for executing callback functions on events or timeouts
libffi-3.2.1                   Foreign Function Interface
libfontenc-1.1.3_1             The fontenc Library
libgcrypt-1.8.0                General purpose crypto library based on code used in GnuPG
libgpg-error-1.27              Common error values for all GnuPG components
libiconv-1.14_10               Character set conversion library
libidn2-2.0.3                  Implementation of IDNA2008 internationalized domain names
libinotify-20170201            Kevent based inotify compatible library
liblz4-1.7.5,1                 LZ4 compression library, lossless and very fast
libnghttp2-1.24.0              HTTP/2.0 C Library
libpaper-1.1.24.4              Library providing routines for paper size management
libpciaccess-0.13.5            Generic PCI access library
libpthread-stubs-0.4           This library provides weak aliases for pthread functions
libssh2-1.8.0,3                Library implementing the SSH2 protocol
libsunacl-1.0                  Wrapper providing SunOS NFSv4 ACL API
libtasn1-4.12                  ASN.1 structure parser library
libtool-2.4.6                  Generic shared library support script
libunistring-0.9.7             Unicode string library
libunwind-20170113_1           Generic stack unwinding library
libuv-1.13.1                   Multi-platform support library with a focus on asynchronous I/O
libxcb-1.12_2                  The X protocol C-language Binding (XCB) library
libxkbfile-1.0.9               XKB file library
libxml2-2.9.4                  XML parser library for GNOME
libxshmfence-1.2_2             Shared memory 'SyncFence' synchronization primitive
libxslt-1.1.29_1               The XSLT C library for GNOME
libyaml-0.1.6_2                YAML 1.1 parser and emitter written in C
llvm40-4.0.1                   LLVM and Clang
lua52-5.2.4                    Small, compilable scripting language providing easy access to C code
lzo2-2.10_1                    Portable speedy, lossless data compression library
m4-1.4.18,1                    GNU M4
makedepend-1.0.5,1             Dependency generator for makefiles
mesa-dri-17.1.5                OpenGL hardware acceleration drivers for DRI2+
mesa-libs-17.1.5               OpenGL libraries that support GLX and EGL clients
meson-0.41.1                   High performance build system
minixmlto-0.0.2_1              Minimalistic alternative to xmlto
mkfontdir-1.0.7                Create an index of X font files in a directory
mkfontscale-1.1.2              Creates an index of scalable font files for X
mod_php56-5.6.31               PHP Scripting Language
mpfr-3.1.5_1                   Library for multiple-precision floating-point computations
mysql56-client-5.6.37          Multithreaded SQL database (client)
mysql56-server-5.6.37          Multithreaded SQL database (server)
nasm-2.11.08_1,1               General-purpose multi-platform x86 and amd64 assembler
net-snmp-5.7.3_17              Extendable SNMP implementation
nettle-3.3                     Low-level cryptographic library
ninja-1.7.2,2                  Ninja is a small build system closest in spirit to Make
oniguruma5-5.9.6_1             BSDL Regular Expressions library compatible with POSIX/GNU/Perl
openipmi-2.0.21_1              Complex IPMI management software
openjdk-7.141.02,1             Java Development Kit 7
openldap-client-2.4.45         Open source LDAP client implementation
p11-kit-0.23.7                 Library for loading and enumerating of PKCS#11 modules
p5-Locale-gettext-1.07         Message handling functions
p5-Parse-Yapp-1.05_2           Perl extension for generating and using LALR parsers
p5-XML-Parser-2.44             Perl extension interface to James Clark's XML parser, expat
pbzip2-1.1.13                  Parallel BZIP2
pciids-20170701                Database of all known IDs used in PCI devices
pcre-8.40_1                    Perl Compatible Regular Expressions library
perl5-5.24.2                   Practical Extraction and Report Language
php56-5.6.31                   PHP Scripting Language
php56-bcmath-5.6.31            The bcmath shared extension for php
php56-ctype-5.6.31             The ctype shared extension for php
php56-dom-5.6.31               The dom shared extension for php
php56-extensions-1.0           "meta-port" to install PHP extensions
php56-filter-5.6.31            The filter shared extension for php
php56-gd-5.6.31                The gd shared extension for php
php56-gettext-5.6.31           The gettext shared extension for php
php56-hash-5.6.31              The hash shared extension for php
php56-iconv-5.6.31             The iconv shared extension for php
php56-json-5.6.31              The json shared extension for php
php56-ldap-5.6.31              The ldap shared extension for php
php56-mbstring-5.6.31          The mbstring shared extension for php
php56-mysql-5.6.31             The mysql shared extension for php
php56-mysqli-5.6.31            The mysqli shared extension for php
php56-opcache-5.6.31           The opcache shared extension for php
php56-pdo-5.6.31               The pdo shared extension for php
php56-pdo_sqlite-5.6.31        The pdo_sqlite shared extension for php
php56-phar-5.6.31              The phar shared extension for php
php56-posix-5.6.31             The posix shared extension for php
php56-session-5.6.31           The session shared extension for php
php56-simplexml-5.6.31         The simplexml shared extension for php
php56-snmp-5.6.31              The snmp shared extension for php
php56-sockets-5.6.31           The sockets shared extension for php
php56-sqlite3-5.6.31           The sqlite3 shared extension for php
php56-tokenizer-5.6.31         The tokenizer shared extension for php
php56-xml-5.6.31               The xml shared extension for php
php56-xmlreader-5.6.31         The xmlreader shared extension for php
php56-xmlwriter-5.6.31         The xmlwriter shared extension for php
pixman-0.34.0                  Low-level pixel manipulation library
pkg-1.10.1                     Package manager
pkgconf-1.3.7,1                Utility to help to configure compiler and linker flags
png-1.6.29                     Library for manipulating PNG images
popt-1.16_2                    Getopt(3) like library with a number of enhancements, from Redhat
portmaster-3.17.10             Manage your ports without external databases or languages
presentproto-1.1               Present protocol specification
printproto-1.0.5               Print extension headers
py27-Babel-2.3.4               Collection of tools for internationalizing Python applications
py27-Jinja2-2.9.5              Fast and easy to use stand-alone template engine
py27-MarkupSafe-1.0            Implements XML/HTML/XHTML Markup safe string for Python
py27-alabaster-0.7.6           Modified Kr Sphinx theme
py27-dnspython-1.15.0          DNS toolkit for Python
py27-docutils-0.13.1           Python Documentation Utilities
py27-enum34-1.1.6              Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7
py27-imagesize-0.7.1           Python image size library
py27-iso8601-0.1.11            Simple module to parse ISO 8601 dates
py27-pip-9.0.1                 Tool for installing and managing Python packages
py27-pygments-2.2.0            Syntax highlighter written in Python
py27-pystemmer-1.3.0_1         Snowball Stemming Algorithms for Information Retrieval
py27-pytz-2016.10,1            World Timezone Definitions for Python
py27-setuptools-36.0.1         Python packages installer
py27-six-1.10.0                Python 2 and 3 compatibility utilities
py27-snowballstemmer-1.2.0_1   Snowball stemming library collection for Python
py27-sphinx-1.4.8_1,1          Python documentation generator
py27-sphinx_rtd_theme-0.2.4    Mobile-friendly py-sphinx theme
py36-setuptools-36.0.1         Python packages installer
python2-2_3                    The "meta-port" for version 2 of the Python interpreter
python27-2.7.13_6              Interpreted object-oriented programming language
python36-3.6.2                 Interpreted object-oriented programming language
randrproto-1.5.0               Randr extension headers
rdesktop-1.8.3                 RDP client for Windows NT/2000/2003 Terminal Server
readline-7.0.3                 Library for editing command lines as they are typed
recordproto-1.14.2             RECORD extension headers
renderproto-0.11.1             RenderProto protocol headers
resourceproto-1.2.0            Resource extension headers
rhash-1.3.4                    Utility and library for computing and checking of file hashes
rsync-3.1.2_7                  Network file distribution/synchronization utility
ruby-2.3.4_2,1                 Object-oriented interpreted scripting language
ruby23-gems-2.6.12             Package management framework for the Ruby language
rubygem-hpricot-0.8.6          Fast, Enjoyable HTML Parser for Ruby
rubygem-mustache-1.0.5         Framework-agnostic way to render logic-free views
rubygem-rdiscount-2.2.0.1      Fast Markdown converter for ruby based on discount
rubygem-ronn-0.7.3             Builds manuals
s2tc-1.0+20151228              Subset of a well-known texture compression scheme
samba46-4.6.6                  Free SMB/CIFS and AD/DC server and client for Unix
scons-2.5.1_1                  Build tool alternative to make
screen-4.5.0_3                 Multi-screen window manager
scrnsaverproto-1.2.2           ScrnSaver extension headers
sdocbook-xml-1.1_2,2           "Simplified" DocBook XML DTD
serf-1.3.9_1                   Serf HTTP client library
sqlite3-3.19.3_1               SQL database engine in a C library
subversion-1.9.7               Version control system
sudo-1.8.20p2_2                Allow others to run commands as root
swig13-1.3.40_1                Simplified Wrapper and Interface Generator
swig30-3.0.12                  Generate wrappers for calling C/C++ code from other languages
t1lib-5.1.2_4,1                Type 1 font rasterization library for Unix/X11
talloc-2.1.9                   Hierarchical pool based memory allocator
tdb-1.3.12,1                   Trivial Database
tevent-0.9.31                  Talloc based event loop library
texinfo-6.4_1,1                Typeset documentation system with multiple format output
tpm-emulator-0.7.4_2           Trusted Platform Module (TPM) emulator
trousers-0.3.14_1              Open-source TCG Software Stack
tshark-2.4.0                   Powerful network analyzer/capture tool
unixODBC-2.3.4                 ODBC library suite for Unix
unzip-6.0_7                    List, test, and extract compressed files from a ZIP archive
videoproto-2.3.3               Video extension headers
vim-lite-8.0.0809              Improved version of the vi editor (lite package)
wget-1.19.1_1                  Retrieve files from the Net via HTTP(S) and FTP
xcb-proto-1.12                 The X protocol C-language Binding (XCB) protocol
xcb-util-0.4.0_2,1             Module with libxcb/libX11 extension/replacement libraries
xcb-util-renderutil-0.3.9_1    Convenience functions for the Render extension
xcmiscproto-1.2.2              XCMisc extension headers
xextproto-7.3.0                XExt extension headers
xf86bigfontproto-1.2.0         XFree86-Bigfont extension headers
xf86driproto-2.1.1             XFree86-DRI extension headers
xf86vidmodeproto-2.3.1         XFree86-VidModeExtension extension headers
xineramaproto-1.2.1            Xinerama extension headers
xkbcomp-1.4.0                  Compile XKB keyboard description
xkeyboard-config-2.21          X Keyboard Configuration Database
xmlcatmgr-2.2_2                SGML and XML catalog manager
xmlcharent-0.3_2               XML character entities
xorg-macros-1.19.1             X.Org development aclocal macros
xorg-vfbserver-1.19.1_3,1      X virtual framebuffer server from X.Org
xproto-7.0.31                  X11 protocol headers
xtrans-1.3.5                   Abstract network code for X
zabbix32-agent-3.2.6           Enterprise-class open source distributed monitoring (agent)
zabbix32-frontend-3.2.6        Enterprise-class open source distributed monitoring (frontend)
zabbix32-server-3.2.6          Enterprise-class open source distributed monitoring (server)
zip-3.0_1                      Create/update ZIP files compatible with PKZIP
zoneinfo-2017.b_1              Updated timezone definitions