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?RCS: $Id$
?RCS:
?RCS: Copyright (c) 2011, Raphael Manfredi
?RCS:
?RCS: You may redistribute only under the terms of the Artistic License,
?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 License; a copy of which may be found at the root
?RCS: of the source tree for dist 4.0.
?RCS:
?MAKE:d_end_symbol: Trylink cat
?MAKE: -pick add $@ %<
?S:d_end_symbol:
?S: This variable conditionally defines HAS_END_SYMBOL if the
?S: linker-defined symbol "end" is available to compute the end
?S: address of the program's BSS segment.
?S:.
?C:HAS_END_SYMBOL:
?C: This symbol, if defined, indicates that the C program can declare
?C: extern const int end;
?C: and then use &end to know the end of the BSS segment.
?C:.
?H:#$d_end_symbol HAS_END_SYMBOL /**/
?H:.
?LINT:set d_end_symbol
: see if the end symbol exists
$cat >try.c <<EOC
int main(void)
{
extern int end;
return (int) &end >> 12;
}
EOC
cyn="whether your linker defines the end symbol"
set d_end_symbol
eval $trylink
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