?RCS:
?RCS: Copyright (c) 2015 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_proginvocname: Trylink cat
?MAKE:	-pick add $@ %<
?S:d_proginvocname:
?S:	This variable conditionally defines the HAS_PROGRAM_INVOCATION_NAME
?S:	symbol, which indicates to the C program that the two variables
?S:	program_invocation_name and program_invocation_short_name are set
?S:	at startup time.
?S:.
?C:HAS_PROGRAM_INVOCATION_NAME:
?C:	This symbol is defined when the C startup sets the two variables
?C:	program_invocation_name and program_invocation_short_name.  To get
?C:	these definitions, <errno.h> must be included with __USE_GNU defined.
?C:.
?H:#$d_proginvocname HAS_PROGRAM_INVOCATION_NAME
?H:.
?LINT: set d_proginvocname
: do we have the program_invocation_name variable?
$cat >try.c <<EOC
#include <stdio.h>
#define __USE_GNU
#include <errno.h>
int main(void)
{
	printf("%s\n%s\n", program_invocation_name, program_invocation_short_name);
	return 0;
}
EOC
cyn="whether C startup sets program_invocation_name"
set d_proginvocname
eval $trylink