It is caused by charset.lib don't exist but the libtool is using charset.dll.lib,
It's surely a bug!!!! The name don't correspond.
build continues but stop again.
# make
builddir="`pwd`"; cd libcharset && make all && make install-lib libdir="$builddir/lib" includedir="$builddir/lib"
make[1]: Entering directory '/f/Software/Application/lib/libiconv-1.17/libcharset'
cd lib && make all
make[2]: Entering directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
make[1]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/libcharset'
make[1]: Entering directory '/f/Software/Application/lib/libiconv-1.17/libcharset'
cd lib && make all
make[2]: Entering directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
cd lib && make install-lib libdir='/f/Software/Application/lib/libiconv-1.17/lib' includedir='/f/Software/Application/lib/libiconv-1.17/lib'
make[2]: Entering directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
/bin/sh ../build-aux/mkinstalldirs /f/Software/Application/lib/libiconv-1.17/lib
/bin/sh ../libtool --mode=install /usr/bin/install -c
libcharset.la /f/Software/Application/lib/libiconv-1.17/lib/
libcharset.lalibtool: install: /usr/bin/install -c .libs/charset.dll.lib /f/Software/Application/lib/libiconv-1.17/lib/charset.dll.lib
libtool: install: base_file=`basename
libcharset.la`
libtool: install: dlpath=`/bin/sh 2>&1 -c '. .libs/'
libcharset.la'i; echo charset-1.dll'`
libtool: install: dldir=/f/Software/Application/lib/libiconv-1.17/lib/`dirname ../bin/charset-1.dll`
libtool: install: test -d /f/Software/Application/lib/libiconv-1.17/lib/../bin || mkdir -p /f/Software/Application/lib/libiconv-1.17/lib/../bin
libtool: install: /usr/bin/install -c .libs/charset-1.dll /f/Software/Application/lib/libiconv-1.17/lib/../bin/charset-1.dll
libtool: install: /usr/bin/install -c .libs/libcharset.lai /f/Software/Application/lib/libiconv-1.17/lib/
libcharset.lalibtool: install: /usr/bin/install -c .libs/charset.dll.lib /f/Software/Application/lib/libiconv-1.17/lib/charset.dll.lib
libtool: install: chmod 644 /f/Software/Application/lib/libiconv-1.17/lib/charset.dll.lib
libtool: warning: remember to run 'libtool --finish /f/Software/Application/lib/libiconv/lib'
make[2]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/libcharset/lib'
/bin/sh ./build-aux/mkinstalldirs /f/Software/Application/lib/libiconv-1.17/lib
/usr/bin/install -c -m 644 include/libcharset.h.inst /f/Software/Application/lib/libiconv-1.17/lib/libcharset.h
/usr/bin/install -c -m 644 include/localcharset.h /f/Software/Application/lib/libiconv-1.17/lib/localcharset.h
make[1]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/libcharset'
cd lib && make all
make[1]: Entering directory '/f/Software/Application/lib/libiconv-1.17/lib'
/bin/sh ../libtool --mode=compile --tag=RC `/bin/sh ./../windows/windres-options --escape 1.17` -i ./../windows/libiconv.rc -o libiconv.res.lo --output-format=coff
Usage: /f/Software/Application/lib/libiconv-1.17/libtool [OPTION]... [MODE-ARG]...
Try 'libtool --help' for more information.
libtool: error: unrecognised option: '-DPACKAGE_VERSION_STRING=\"1.17\"'make[1]: *** [Makefile:99: libiconv.res.lo] Error 1
make[1]: Leaving directory '/f/Software/Application/lib/libiconv-1.17/lib'
make: *** [Makefile:33: all] Error 2
again libtool script failed....