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dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
dnl
dnl Copyright by the Board of Trustees of the University of Illinois.
dnl All rights reserved.
dnl
dnl This file is part of HDF5. The full HDF5 copyright notice, including
dnl terms governing use, modification, and redistribution, is contained in
dnl the files COPYING and Copyright.html. COPYING can be found at the root
dnl of the source code distribution tree; Copyright.html can be found at the
dnl root level of an installed copy of the electronic HDF5 document set and
dnl is linked from the top-level documents page. It can also be found at
dnl http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have
dnl access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu.
dnl
dnl Macros for HDF5 Fortran
dnl
dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
dnl AC_F9X_MODS()
dnl
dnl Check how F9X handles modules. This macro also checks which
dnl command-line option to use to include the module once it's built.
dnl
AC_DEFUN(AC_F9X_MODS,
[AC_MSG_CHECKING(what $FC does with modules)
AC_LANG_PUSH(Fortran)
test -d conftestdir || mkdir conftestdir
cd conftestdir
rm -rf *
cat >conftest.$ac_ext <<EOF
module module
integer foo
end module module
EOF
eval $ac_compile
modfiles=""
F9XMODEXT=""
for f in conftest.o module.mod MODULE.mod module.M MODULE.M; do
if test -f "$f" ; then
modfiles="$f"
case "$f" in
*.o) F9XMODEXT="o" ;;
*.mod) F9XMODEXT="mod" ;;
*.M) F9XMODEXT="M" ;;
esac
fi
done
echo $modfiles 6>&1
if test "$modfiles" = file.o; then
echo $ac_n "checking whether $FC -em is saner""... $ac_c" 1>&6
OLD_FCFLAGS=$FCFLAGS
FCFLAGS="$FCFLAGS -em"
eval $ac_compile
modfiles=""
for f in file.o module.mod MODULE.mod module.M MODULE.M; do
test -f $f && modfiles="$f"
done
if test "$modfiles" = "file.o"; then
FCFLAGS=$OLD_FCFLAGS
echo no 6>&1
else
echo yes 6>&1
fi
fi
cd ..
AC_MSG_CHECKING(how $FC finds modules)
for flag in "-I" "-M" "-p"; do
cat >conftest.$ac_ext <<EOF
program conftest
use module
end program conftest
EOF
ac_compile='${FC-f90} $FCFLAGS ${flag}conftestdir -c conftest.$ac_ext 1>&AS_MESSAGE_LOG_FD'
if AC_TRY_EVAL(ac_compile); then
F9XMODFLAG=$flag
break
fi
done
if test -n "$F9XMODFLAG"; then
echo $F9XMODFLAG 1>&6
FCFLAGS="$F9XMODFLAG. $FCFLAGS"
else
echo unknown 1>&6
fi
AC_SUBST(F9XMODFLAG)
AC_SUBST(F9XMODEXT)
rm -rf conftest*
AC_LANG_POP(Fortran)
])
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