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?RCS: $Id$
?RCS:
?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
?RCS:
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 4.0.
?RCS:
?RCS: $Log: intsize.U,v $
?RCS: Revision 3.0.1.2 1997/02/28 15:55:26 ram
?RCS: patch61: avoid prompting the user if the test runs ok
?RCS: patch61: moved code from longsize.U into there
?RCS: patch61: new tests for shortsize as well
?RCS:
?RCS: Revision 3.0.1.1 1994/10/29 16:21:06 ram
?RCS: patch36: added ?F: line for metalint file checking
?RCS:
?RCS: Revision 3.0 1993/08/18 12:08:52 ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:intsize longsize shortsize: \
Myread cat rm +cc +optimize +ccflags +ldflags +libs
?MAKE: -pick add $@ %<
?S:intsize:
?S: This variable contains the value of the INTSIZE symbol, which
?S: indicates to the C program how many bytes there are in an int.
?S:.
?S:longsize:
?S: This variable contains the value of the LONGSIZE symbol, which
?S: indicates to the C program how many bytes there are in a long.
?S:.
?S:shortsize:
?S: This variable contains the value of the SHORTSIZE symbol which
?S: indicates to the C program how many bytes there are in a short.
?S:.
?C:INTSIZE:
?C: This symbol contains the value of sizeof(int) so that the C
?C: preprocessor can make decisions based on it.
?C:.
?C:LONGSIZE:
?C: This symbol contains the value of sizeof(long) so that the C
?C: preprocessor can make decisions based on it.
?C:.
?C:SHORTSIZE:
?C: This symbol contains the value of sizeof(short) so that the C
?C: preprocessor can make decisions based on it.
?C:.
?H:#define INTSIZE $intsize /**/
?H:#define LONGSIZE $longsize /**/
?H:#define SHORTSIZE $shortsize /**/
?H:.
?F:!intsize.out !intsize
: check for lengths of integral types
echo " "
case "$intsize" in
'')
echo "Checking to see how big your integers are..." >&4
$cat >intsize.c <<'EOCP'
#include <stdio.h>
int main()
{
@if INTSIZE || intsize
printf("intsize=%d;\n", sizeof(int));
@end
@if LONGSIZE || longsize
printf("longsize=%d;\n", sizeof(long));
@end
@if SHORTSIZE || shortsize
printf("shortsize=%d;\n", sizeof(short));
@end
fflush(stdout);
exit(0);
}
EOCP
# If $libs contains -lsfio, and sfio is mis-configured, then it
# sometimes (apparently) runs and exits with a 0 status, but with no
# output!. Thus we check with test -s whether we actually got any
# output. I think it has to do with sfio's use of _exit vs. exit,
# but I don't know for sure. --Andy Dougherty 1/27/97.
if $cc $optimize $ccflags $ldflags -o intsize intsize.c $libs >/dev/null 2>&1 &&
./intsize > intsize.out 2>/dev/null && test -s intsize.out ; then
eval `$cat intsize.out`
@if INTSIZE || intsize
echo "Your integers are $intsize bytes long."
@end
@if LONGSIZE || longsize
echo "Your long integers are $longsize bytes long."
@end
@if SHORTSIZE || shortsize
echo "Your short integers are $shortsize bytes long."
@end
else
$cat >&4 <<EOM
!
Help! I can't compile and run the intsize test program: please enlighten me!
(This is probably a misconfiguration in your system or libraries, and
you really ought to fix it. Still, I'll try anyway.)
!
EOM
@if INTSIZE || intsize
dflt=4
rp="What is the size of an integer (in bytes)?"
. ./myread
intsize="$ans"
@end
@if LONGSIZE || longsize
dflt=$intsize
rp="What is the size of a long integer (in bytes)?"
. ./myread
longsize="$ans"
@end
@if SHORTSIZE || shortsize
dflt=2
rp="What is the size of a short integer (in bytes)?"
. ./myread
shortsize="$ans"
@end
fi
;;
esac
$rm -f intsize intsize.[co] intsize.out
|
