The author of configure.in made quite a strange strange decision here ...

--- configure.orig	2017-01-03 00:06:19.377476176 -0500
+++ configure	2017-01-03 00:06:43.074590422 -0500
@@ -4165,7 +4165,7 @@
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-LDFLAGS="$CFLAGS"
+#LDFLAGS="$CFLAGS"
 LDFLAGS_BIN="$LDFLAGS"
 
 if test "x$FC" = "xnone" ; then