fix .gitignore: only ignore 'perl' in root of repo, not U/perl subdir

[metaconfig.git] / U / perl / d_cplusplus.U

?RCS: Copyright (c) 2005-2007 H.Merijn Brand
?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:
?MAKE:d_cplusplus: Compile Setvar run cat rm_try
?MAKE:	-pick add $@ %<
?S:d_cplusplus (d_cplusplus.U):
?S:	This variable conditionally defines the USE_CPLUSPLUS symbol, which
?S:	indicates that a C++ compiler was used to compiled Perl and will be
?S:	used to compile extensions.
?S:.
?C:USE_CPLUSPLUS:
?C:	This symbol, if defined, indicates that a C++ compiler was
?C:	used to compiled Perl and will be used to compile extensions.
?C:.
?H:#$d_cplusplus USE_CPLUSPLUS		/**/
?H:.
?F:!try
?LINT:set d_cplusplus
: Check if we are using C++
echo " "
echo "Checking for C++..." >&4
$cat >try.c <<'EOCP'
#include <stdio.h>
int main(void)
{
#ifdef __cplusplus
    return 0;
#else
    return 1;
#endif
}
EOCP
set try
if eval $compile_ok && $run ./try; then
	val="$define"
	echo "You are using a C++ compiler."
else
	val="$undef"
	echo "You are not using a C++ compiler."
fi
$rm_try cplusplus$$
set d_cplusplus
eval $setvar