Re: New macro AC_FC_IMPLICIT_NONE to disable Fortran implicit int.

[Ralf Wildenhues]

* Ralf Wildenhues wrote on Sat, Mar 05, 2011 at 09:37:55AM CET:
>     New macros AC_{F77,FC}_IMPLICIT_NONE to disable Fortran implicit int.
>     
>     * lib/autoconf/fortran.m4 (_AC_FC_IMPLICIT_NONE): New internal
>     macro.
>     (AC_F77_IMPLICIT_NONE, AC_FC_IMPLICIT_NONE): New macros.
>     * doc/autoconf.texi (Fortran Compiler): Document them.
>     * NEWS: Update.

First bugfix patch.  Pushing as below, adding Tobias to THANKS.

Thanks,
Ralf

    Fix Cray Fortran flag for AC_FC_IMPLICIT_NONE.
    
    * lib/autoconf/fortran.m4 (_AC_FC_IMPLICIT_NONE): Use -e I
    not -d i, for Cray ftn.
    * THANKS: Update.
    Thanks to Tobias Burnus for feedback and testing.

diff --git a/lib/autoconf/fortran.m4 b/lib/autoconf/fortran.m4
index 237cdd9..84f3162 100644
--- a/lib/autoconf/fortran.m4
+++ b/lib/autoconf/fortran.m4
@@ -1470,7 +1470,7 @@ AC_LANG_POP([Fortran])dnl
 # Compaq: -u, -warn declarations
 # NAGWare: -u
 # Lahey: -in, --in, -AT
-# Cray: -Mdclchk -d i
+# Cray: -Mdclchk -e I
 # PGI: -Mcdlchk
 # f2c: -u
 AC_DEFUN([_AC_FC_IMPLICIT_NONE],
@@ -1480,7 +1480,7 @@ AC_CACHE_CHECK([for flag to disallow _AC_LANG implicit 
declarations],
 [ac_cv_[]_AC_LANG_ABBREV[]_implicit_none=unknown
 ac_fc_implicit_none_[]_AC_LANG_PREFIX[]FLAGS_save=$[]_AC_LANG_PREFIX[]FLAGS
 for ac_flag in none -fimplicit-none -u -Wimplicit -implicitnone +implicit_none 
\
-               -qundef "-warn declarations" -in --in -AT "-d i" -Mdclchk \
+               -qundef "-warn declarations" -in --in -AT "-e I" -Mdclchk \
                "-u -warn errors"
 do
   if test "x$ac_flag" != xnone; then