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hdf5/acsite.m4
James Laird 418968677b [svn-r10179] Purpose: 
Automake update cleanup and minor changes

Description:
Removed macros in acsite.m4 that are no longer used.
Switched to using autoconf's AC_LANG_PUSH(Fortran) instead of old
AC_LANG_FORTRAN9X macro.
Switched to using AC_LANG_PUSH() and AC_LANG_POP() (from old AC_LANG_X).
Added ifort to list of Fortran compilers configure will look for.
Added a note about automake change to Release Notes.

Platforms tested:
copper, modi4 (parallel and serial), eirene
2005-03-10 15:52:34 -05:00

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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. $FCFLAGS"
else
echo unknown 1>&6
fi
AC_SUBST(F9XMODFLAG)
AC_SUBST(F9XMODEXT)
rm -rf conftest*
AC_LANG_POP(Fortran)
])
dnl -------------------------------------------------------------------------
dnl AC_TRY_FCOMPILE()
dnl
dnl Check if we can compile a simple Fortran 90 program.
dnl
dnl AC_TRY_FCOMPILE(FUNCTION-BODY,
dnl [ACTION-IF-SUCCESS], [ACTION-IF-NOT-SUCCESS])
dnl
AC_DEFUN([AC_TRY_FCOMPILE],
[AC_LANG_PUSH(Fortran)
test -d conftestdir || mkdir conftestdir
cd conftestdir
rm -rf *
cat >conftest.$ac_ext <<EOF
$1
EOF
if AC_TRY_EVAL(ac_compile); then
:
[$2]
else
:
[$3]
fi
cd ..
rm -rf conftest*
AC_LANG_POP(Fortran)
])
dnl -------------------------------------------------------------------------
dnl AC_TRY_FLINK()
dnl
dnl Check if we can link a simple Fortran 90 program.
dnl
dnl AC_TRY_FLINK(INCLUDES, FUNCTION-BODY,
dnl [ACTION-IF-SUCCESS], [ACTION-IF-NOT-SUCCESS])
dnl
AC_DEFUN([AC_TRY_FLINK],
[AC_LANG_PUSH(Fortran)
test -d conftestdir || mkdir conftestdir
cd conftestdir
rm -rf *
cat >conftest.$ac_ext <<EOF
program conftest
include '$1'
$2
end
EOF
if AC_TRY_EVAL(ac_compile) && AC_TRY_EVAL(ac_link); then
:
[$3]
else
:
[$4]
fi
cd ..
rm -rf conftest*
AC_LANG_POP(Fortran)
])
dnl -------------------------------------------------------------------------
dnl AC_CHECK_FLIB()
dnl
dnl Check if we can link a simple Fortran 90 program with the specified library.
dnl
dnl AC_CHECK_FLIB(LIBRARY, FUNCTION-BODY,
dnl [ACTION-IF-SUCCESS], [ACTION-IF-NOT-SUCCESS])
dnl
AC_DEFUN([AC_CHECK_FLIB],
[AC_LANG_PUSH(Fortran)
test -d conftestdir || mkdir conftestdir
cd conftestdir
rm -rf *
cat >conftest.$ac_ext <<EOF
program conftest
$2
end
EOF
if test -n "$1"; then
saved_LIBS="$LIBS"
LIBS="$LIBS -l$1"
fi
if AC_TRY_EVAL(ac_compile) && AC_TRY_EVAL(ac_link); then
:
[$3]
else
LIBS="$saved_LIBS"
[$4]
fi
cd ..
rm -rf conftest*
AC_LANG_POP(Fortran)
])
dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
dnl
dnl Possible future tests for the Fortran stuff...
dnl
dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
dnl
dnl echo $ac_n "checking whether f90 real type has 12 digits of precision""... $ac_c" 1>&6
dnl cat >conftest.f90 <<'EOF'
dnl program conftest
dnl if (selected_real_kind(12) .eq. kind(0.0)) then
dnl print '(a)','YES'
dnl else
dnl print '(a)','NO'
dnl end if
dnl end program conftest
dnl EOF
dnl $ac_cv_prog_F90 $FCFLAGS -o conftest conftest.f90 > /dev/null 2>&1
dnl if test "`./conftest | head -1`" = YES; then
dnl echo "yes" 1>&6
dnl AC_DEFINE(HIPREC)
dnl else
dnl echo "no" 1>&6
dnl fi
dnl echo $ac_n "checking whether f90 precision of default real type""... $ac_c" 1>&6
dnl cat >conftest.f90 <<'EOF'
dnl program conftest
dnl if (kind(0.0) .eq. selected_real_kind(12) .or.&
dnl &kind(0.0) .eq. selected_real_kind(6) ) then
dnl print '(a)','YES'
dnl else
dnl print '(a)','NO'
dnl end if
dnl end program conftest
dnl EOF
dnl $ac_cv_prog_F90 $FCFLAGS -o conftest conftest.f90 > /dev/null 2>&1
dnl if test "`./conftest | head -1`" = YES; then
dnl echo "OK" 1>&6
dnl AC_DEFINE(REALOK)
dnl else
dnl echo "no" 1>&6
dnl fi
dnl echo $ac_n "checking accuracy of arithmetic""... $ac_c" 1>&6
dnl cat >conftest.f90 <<'EOF'
dnl program conftest
dnl integer, parameter :: double=selected_real_kind(12)
dnl real(double), parameter :: ulp=2.0_double**(-47)
dnl real(double), parameter :: ans=0.92699498904359955986_double
dnl real(double) :: x,y,z
dnl integer i
dnl x=0.0_double
dnl y=ulp
dnl do i=2,100
dnl z=x+y
dnl x=y
dnl y=z-int(z)
dnl end do
dnl if (y-ans .lt. ulp/2.0_double) then
dnl print '(a)','YES'
dnl else
dnl print '(a)','NO'
dnl end if
dnl end program conftest
dnl EOF
dnl $ac_cv_prog_F90 $FCFLAGS -o conftest conftest.f90 > /dev/null 2>&1
dnl if test "`./conftest | head -1`" = YES; then
dnl echo "OK" 1>&6
dnl AC_DEFINE(ARITHOK)
dnl else
dnl echo "no" 1>&6
dnl fi
dnl echo $ac_n "checking whether int is the fastest way to truncate""... $ac_c" 1>&6
dnl cat >conftest.f90 <<'EOF'
dnl program conftest
dnl integer, parameter :: double=selected_real_kind(12)
dnl real(double), parameter :: ulp=2.0_double**(-47)
dnl real(double) :: x,y,z,ya,yb
dnl integer :: t0,t1,i,timea,timeb
dnl
dnl x=0.0_double
dnl y=ulp
dnl call system_clock(t0)
dnl do i=2,1000000
dnl z=x+y
dnl x=y
dnl y=z-int(z)
dnl end do
dnl ya=y
dnl call system_clock(t1)
dnl timea=t1-t0
dnl
dnl x=0.0_double
dnl y=ulp
dnl call system_clock(t0)
dnl do i=2,1000000
dnl z=x+y
dnl x=y
dnl if (z.ge.1.0_double) then
dnl y=z-1.0_double
dnl else
dnl y=z
dnl end if
dnl end do
dnl yb=y
dnl call system_clock(t1)
dnl timeb=t1-t0
dnl
dnl if (timea.lt.timeb) then
dnl print '(a)','YES'
dnl else
dnl print '(a)','NO'
dnl end if
dnl print *,ya,yb
dnl end program conftest
dnl EOF
dnl $ac_cv_prog_F90 $FCFLAGS -o conftest conftest.f90 > /dev/null 2>&1
dnl if test "`./conftest | head -1`" = YES; then
dnl echo "yes" 1>&6
dnl AC_DEFINE(USEINT)
dnl else
dnl echo "no" 1>&6
dnl fi
dnl
dnl -------------------------------------------------------------------------
dnl -------------------------------------------------------------------------
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