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openmpi/config/f77_get_sizeof.m4
Jeff Squyres 7e97aafb66 Ensure that we always have fortran sizeof's and alignments, and put
them in run-time variables so that they can be overridden at run-time

This commit was SVN r867.
2004-03-16 23:54:51 +00:00

109 строки
2.3 KiB
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dnl -*- shell-script -*-
dnl
dnl $HEADER$
dnl
AC_DEFUN([LAM_F77_GET_SIZEOF],[
# Determine FORTRAN datatype size.
# First arg is type, 2nd arg is config var to define.
AC_MSG_CHECKING([size of FORTRAN $1])
lam_ac_size_fn=
if test "x$lam_ac_doubleunder" = xy || test "x$lam_ac_singleunder" = xy; then
lam_ac_size_fn=size_
else
if test "x$lam_ac_nounder" = xy; then
lam_ac_size_fn=size
else
if test "x$lam_ac_caps" = xy; then
lam_ac_size_fn=SIZE
else
AC_MSG_WARN([*** FORTRAN external naming convention undefined])
AC_MSG_ERROR([*** Cannot continue.])
fi
fi
fi
#
# Cannot use standard AC_TRY macros because we need two different .o
# files here, and link them together
#
#
# Fortran module
#
cat > conftestf.f <<EOF
program fsize
external SIZE
$1 x(2)
call SIZE(x(1),x(2))
end
EOF
#
# C module
#
if test -f conftest.h; then
lam_conftest_h="#include \"conftest.h\""
else
lam_conftest_h=""
fi
cat > conftest.c <<EOF
#include <stdio.h>
#include <stdlib.h>
$lam_conftest_h
#ifdef __cplusplus
extern "C" {
#endif
void $lam_ac_size_fn(char *a, char *b)
{
int diff = (int) (b - a);
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%d\n", diff);
}
#ifdef __cplusplus
}
#endif
EOF
#
# Try the compilation and run. Can't use AC_TRY_RUN because it's two
# module files.
#
LAM_LOG_COMMAND([$CC $CFLAGS -I. -c conftest.c],
LAM_LOG_COMMAND([$F77 $FFLAGS conftestf.f conftest.o -o conftest],
LAM_LOG_COMMAND([./conftest],[HAPPY=1],[HAPPY=0]),
[HAPPY=0]),
[HAPPY=0])
lam_ac_fortsize=-1
if test "$HAPPY" = "1" -a -f conftestval; then
lam_ac_fortsize=`cat conftestval`
AC_MSG_RESULT([$lam_ac_fortsize])
eval "$2=$lam_ac_fortsize"
else
AC_MSG_RESULT([unknown])
LAM_LOG_MSG([here is the C program:], 1)
LAM_LOG_FILE([conftest.c])
if test -f conftest.h; then
LAM_LOG_MSG([here is contest.h:], 1)
LAM_LOG_FILE([conftest.h])
fi
LAM_LOG_MSG([here is the fortran program:], 1)
LAM_LOG_FILE([conftestf.f])
AC_MSG_WARN([*** Problem running configure test!])
AC_MSG_WARN([*** See config.log for details.])
AC_MSG_ERROR([*** Cannot continue.])
fi
str="$2=$lam_ac_fortsize"
eval $str
unset lam_ac_fortsize HAPPY lam_conftest_h
/bin/rm -f conftest*])dnl