configure: added option --disable-cf-interface to omit the cfortran interface

configure

@@ -884,6 +884,7 @@ enable_iso_c_interface
 enable_swig
 enable_ruby
 enable_python
+enable_cf_interface
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1578,6 +1579,7 @@ Optional Features:
                           (EXPERIMENTAL)
   --enable-ruby           ruby language bindings [default=no] (EXPERIMENTAL)
   --enable-python         python language bindings [default=no] (EXPERIMENTAL)
+  --disable-cf-interface  Omit building of cfortran Interface
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -30103,6 +30105,17 @@ else
   CREATE_INTERFACES_FALSE=
 fi
+#  ----------------------------------------------------------------------
+#  Create the CDI Fortran77 Interface via cfortran.h
+# Check whether --enable-cf-interface was given.
+if test "${enable_cf_interface+set}" = set; then :
+  enableval=$enable_cf_interface; enable_cfinterface=${enableval}
+else
+  enable_cfinterface=yes
+fi
+
+if test "x${enable_cfinterface}" = "xyes"; then :
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking C preprocessor flags for Fortran calling convention cfortran.h" >&5
 $as_echo_n "checking C preprocessor flags for Fortran calling convention cfortran.h... " >&6; }
 if ${acx_cv_cf_flag+:} false; then :
@@ -30524,6 +30537,8 @@ $as_echo "$as_me: Disabling cfortran.h bindings generation" >&6;}
      acx_cv_cfortran_works=no
 fi
+fi
+
 fi
  if test -n "$FC" -a X"$FC" != Xno -a x"$acx_cv_cfortran_works" = xyes; then
   USE_FC_TRUE=

configure.ac

@@ -316,6 +316,13 @@ AM_CONDITIONAL(ENABLE_PYTHON, [test "x$enable_python" != "xno"])
 AS_IF([test "x$enable_python" != "xno"],[AC_SUBST([ENABLE_PYTHON],[true])],[AC_SUBST([ENABLE_PYTHON],[false])])
 #  ----------------------------------------------------------------------
 AM_CONDITIONAL(CREATE_INTERFACES, [test  "x$enable_ruby" = "xyes" -o "x$enable_python" = "xyes"])
+#  ----------------------------------------------------------------------
+#  Create the CDI Fortran77 Interface via cfortran.h
+AC_ARG_ENABLE([cf-interface],
+              [AS_HELP_STRING([--disable-cf-interface],
+                              [Omit building of cfortran Interface])],
+              [enable_cfinterface=${enableval}],[enable_cfinterface=yes])
+AS_IF([test "x${enable_cfinterface}" = "xyes"], [
 dnl ######################################################################
 dnl Test whether cfortran.h works correctly
 dnl ######################################################################
@@ -335,6 +342,7 @@ AS_IF([test -n "$FC" -a X"$FC" != Xno -o -n "$F77" -a X"$F77" != Xno],
        [AC_MSG_NOTICE([Unexpected error when linking C and Fortran via cfortran.h!])])
      AC_MSG_NOTICE([Disabling cfortran.h bindings generation])
      acx_cv_cfortran_works=no])])
+])
 AM_CONDITIONAL([USE_FC],[test -n "$FC" -a X"$FC" != Xno -a x"$acx_cv_cfortran_works" = xyes])dnl
 dnl
 AC_SUBST([CPPFLAGS])dnl