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Autoconf Macro: ax_f90_module_flag
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<h1>
ax_f90_module_flag
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AX_F90_MODULE_FLAG</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
Find Fortran 90 modules inclusion flag. The module inclusion flag is stored
in the cached variable ax_f90_modflag. An error is triggered if the flag
cannot be found. Supported are the -I GNU compilers flag, the -M SUN
compilers flag, and the -p Absoft Pro Fortran compiler flag.
</p>
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<h2>
Authors
</h2>
<p class="indent">
Luc Maisonobe <luc@spaceroots.org>, Julian C. Cummings
<cummings@cacr.caltech.edu>, and Alexander Pletzer
<pletzer@txcorp.com>.
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2007-05-12
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AX_F90_MODULE_FLAG],[
AC_CACHE_CHECK([fortran 90 modules inclusion flag],
ax_f90_modflag,
[AC_LANG_PUSH(Fortran)
i=0
while test \( -f tmpdir_$i \) -o \( -d tmpdir_$i \) ; do
i=`expr $i + 1`
done
mkdir tmpdir_$i
cd tmpdir_$i
AC_COMPILE_IFELSE([
!234567
module conftest_module
contains
subroutine conftest_routine
write(*,'(a)') 'gotcha!'
end subroutine conftest_routine
end module conftest_module
],[],[])
cd ..
ax_f90_modflag="not found"
for ax_flag in "-I " "-M" "-p"; do
if test "$ax_f90_modflag" = "not found" ; then
ax_save_FCFLAGS="$FCFLAGS"
FCFLAGS="$ax_save_FCFLAGS ${ax_flag}tmpdir_$i"
AC_COMPILE_IFELSE([
!234567
program conftest_program
use conftest_module
call conftest_routine
end program conftest_program
],[ax_f90_modflag="$ax_flag"],[])
FCFLAGS="$ax_save_FCFLAGS"
fi
done
rm -fr tmpdir_$i
if test "$ax_f90_modflag" = "not found" ; then
AC_MSG_ERROR([unable to find compiler flag for modules inclusion])
fi
AC_LANG_POP(Fortran)
])])
</pre>
</div>
<h2>
License
</h2>
<div class="indent">
<span style="white-space:nowrap;">Copyright © 2007 Luc Maisonobe
<luc@spaceroots.org></span><br>
<span style="white-space:nowrap;">Copyright © 2007 Julian C. Cummings
<cummings@cacr.caltech.edu></span><br>
<span style="white-space:nowrap;">Copyright © 2007 Alexander Pletzer
<pletzer@txcorp.com></span>
<p>
Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice and
this notice are preserved.
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