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[metaconfig.git] / U / modified / d_longlong.U

?RCS: $Id: d_longlong.U,v $
?RCS:
?RCS: Copyright (c) 1998 Andy Dougherty
?RCS:
?RCS: You may distribute under the terms of either the GNU General Public
?RCS: License or the Artistic License, as specified in the README file.
?RCS:
?RCS: $Log: d_longlong.U,v $
?RCS:
?MAKE:d_longlong longlongsize: Compile Setvar Myread run \
	cat rm_try test longsize
?MAKE:	-pick add $@ %<
?S:d_longlong:
?S:	This variable conditionally defines HAS_LONG_LONG if
?S:	the long long type is supported.
?S:.
?S:longlongsize:
?S:	This variable contains the value of the LONGLONGSIZE symbol, which
?S:	indicates to the C program how many bytes there are in a long long,
?S:	if this system supports long long.
?S:.
?C:HAS_LONG_LONG:
?C:	This symbol will be defined if the C compiler supports long long.
?C:.
?C:LONGLONGSIZE:
?C:	This symbol contains the size of a long long, so that the
?C:	C preprocessor can make decisions based on it.  It is only
?C:	defined if the system supports long long.
?C:.
?H:#$d_longlong HAS_LONG_LONG		/**/
?H:?LONGLONGSIZE:#ifdef HAS_LONG_LONG
?H:?LONGLONGSIZE:#define LONGLONGSIZE $longlongsize		/**/
?H:?LONGLONGSIZE:#endif
?H:.
?F:!try
?LINT:set d_longlong
: check for long long
echo " "
echo "Checking to see if you have long long..." >&4
echo 'int main() { long long x = 7; return 0; }' > try.c
set try
if eval $compile; then
	val="$define"
	echo "You have long long."
else
	val="$undef"
	echo "You do not have long long."
fi
$rm_try
set d_longlong
eval $setvar

@if LONGLONGSIZE || longlongsize
: check for length of long long
?X:  Check only if d_longlong and if longlongsize is not already set.
case "${d_longlong}${longlongsize}" in
$define)
	echo " "
	echo "Checking to see how big your long longs are..." >&4
	$cat >try.c <<'EOCP'
#include <stdio.h>
int main()
{
    printf("%d\n", (int)sizeof(long long));
    return(0);
}
EOCP
	set try
	if eval $compile_ok; then
		longlongsize=`$run ./try`
		echo "Your long longs are $longlongsize bytes long."
	else
		dflt='8'
		echo " "
		echo "(I can't seem to compile the test program.  Guessing...)"
		rp="What is the size of a long long (in bytes)?"
		. ./myread
		longlongsize="$ans"
	fi
	if $test "X$longsize" = "X$longlongsize"; then
		echo "(That isn't any different from an ordinary long.)"
	fi
	;;
esac
$rm_try
@end