cannot build pinentry

[Thomas Gries]

I cannot built *pinetry*

automake --version ⇒ 1.11.6
autoconf --version ⇒ 2.69

git clone git://git.gnupg.org/pinentry.git
cd pinentry

./autogen.sh
⇒
main::scan_file() called too early to check prototype at 
/usr/local/bin/aclocal line 643.
Running aclocal -I m4 ...
main::scan_file() called too early to check prototype at 
/usr/local/bin/aclocal line 643.
configure.ac:302: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but not 
m4_defun'd
m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from...
m4/iconv.m4:22: AM_ICONV_LINK is expanded from...
m4/iconv.m4:77: AM_ICONV is expanded from...
configure.ac:302: the top level
configure.ac:302: warning: AC_LIB_RPATH is m4_require'd but not m4_defun'd
m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from...
m4/iconv.m4:22: AM_ICONV_LINK is expanded from...
m4/iconv.m4:77: AM_ICONV is expanded from...
configure.ac:302: the top level
Running autoheader...
…

./configure --enable-maintainer-mode
⇒
./configure: line 7718: *syntax error*near unexpected token `iconv'
./configure: line 7718: ` AC_LIB_LINKFLAGS_BODY(iconv)'


/Can anyone help to get this compiled?//
/
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