1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2001-2002 The Trustees of Indiana University.
dnl All rights reserved.
dnl Copyright (c) 1998-2001 University of Notre Dame.
dnl All rights reserved.
dnl Copyright (c) 1994-1998 The Ohio State University.
dnl All rights reserved.
dnl
dnl This file is part of the LAM/MPI software package. For license
dnl information, see the LICENSE file in the top level directory of the
dnl LAM/MPI source distribution.
dnl
dnl $Id: lam_get_fortran_alignment.m4,v 1.8 2003/02/19 04:20:53 jsquyres Exp $
dnl
define(LAM_GET_FORTRAN_ALIGNMENT,[
# Determine FORTRAN datatype size.
# First arg is type, 2nd (optional) arg is config var to define.
AC_MSG_CHECKING(alignment of FORTRAN $1)
lam_ac_align_fn=
if test "x$lam_ac_doubleunder" = xy || test "x$lam_ac_singleunder" = xy; then
lam_ac_align_fn=align_
else
if test "x$lam_ac_nounder" = xy; then
lam_ac_align_fn=align
else
if test "x$lam_ac_caps" = xy; then
lam_ac_align_fn=ALIGN
else
AC_MSG_WARN([*** FORTRAN external naming convention undefined])
AC_MSG_ERROR([*** Cannot continue.])
fi
fi
fi
#
# Fortran module
#
cat > conftestf.f <<EOF
program falign
external ALIGN
$1 w,x,y,z
CHARACTER a,b,c
common /foo/a,w,b,x,y,c,z
call ALIGN(w,x,y,z)
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>
$conftest
#ifdef __cplusplus
extern "C" {
#endif
void $lam_ac_align_fn(char *w, char *x, char *y, char *z)
{ unsigned long aw, ax, ay, az;
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
aw = (unsigned long) w;
ax = (unsigned long) x;
ay = (unsigned long) y;
az = (unsigned long) z;
if (! ((aw%16)||(ax%16)||(ay%16)||(az%16))) fprintf(f, "%d\n", 16);
else if (! ((aw%12)||(ax%12)||(ay%12)||(az%12))) fprintf(f, "%d\n", 12);
else if (! ((aw%8)||(ax%8)||(ay%8)||(az%8))) fprintf(f, "%d\n", 8);
else if (! ((aw%4)||(ax%4)||(ay%4)||(az%4))) fprintf(f, "%d\n", 4);
else if (! ((aw%2)||(ax%2)||(ay%2)||(az%2))) fprintf(f, "%d\n", 2);
else fprintf(f, "%d\n", 1);
fclose(f);
}
#ifdef __cplusplus
}
#endif
EOF
#
# Try the compilation and run. Can't use AC_TRY_RUN because it's two
# module files.
#
LAM_LOG_COMMAND([$CC $CFLAGS -I. -c conftest.c],
LAM_LOG_COMMAND([$F77 $FFLAGS conftestf.f conftest.o -o conftest $LDFLAGS $LIBS],
LAM_LOG_COMMAND([./conftest],[HAPPY=1],[HAPPY=0]),
[HAPPY=0]),
[HAPPY=0])
if test "$HAPPY" = "1" -a -f conftestval; then
lam_ac_align=`cat conftestval`
AC_MSG_RESULT([$lam_ac_align])
if test -n "$2"; then
eval "$2=$lam_ac_align"
fi
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
unset lam_ac_align HAPPY lam_conftest_h
/bin/rm -f conftest*])dnl
|
