tinc devel - Jul 2015 - ./configure: line 5083: syntax error near unexpected token `-DFORTIFY_SOURCE=2, '

Hi all,

I always have a problem to compile Tinc 1.1 on Debian Wheezy (after
AC_CONFIG_MACRO_DIRS problem was solved).

Now I get :

./configure: line 5083: syntax error near unexpected token
`-DFORTIFY_SOURCE=2,'
./configure: line 5083: `  AX_CHECK_COMPILE_FLAG(-DFORTIFY_SOURCE=2,
CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2")'

Just to be clear, I run :

rm -Rf /usr/src/tinc
git clone git://tinc-vpn.org/tinc /usr/src/tinc
cd /usr/src/tinc
git checkout 1.1
autoreconf -fsi
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
--without-zlib --with-lzo --with-openssl

I did this before and it worked.

What is the problem now ?

Thank you.