# Public domain

my $testCode = << 'EOF';
float a[4] = { 1,2,3,4 };
float b[4] = { 5,6,7,8 };
float c[4];

int
main(int argc, char *argv[])
{
	vector float *va = (vector float *)a;
	vector float *vb = (vector float *)b;
	vector float *vc = (vector float *)c;

	*vc = vec_add(*va, *vb);
	return (0);
}
EOF

sub TEST_altivec
{
	my ($ver) = @_;

	print << 'EOF';
case "$host" in
powerpc-*-darwin*)
	ALTIVEC_CFLAGS='-faltivec -maltivec'
	ALTIVEC_CHECK_CFLAGS='-D_DARWIN_C_SOURCE'
	echo "ALTIVEC_CHECK_CFLAGS=${ALTIVEC_CHECK_CFLAGS}" >> Makefile.config
	;;
*)
	ALTIVEC_CFLAGS='-mabi=altivec -maltivec'
	ALTIVEC_CHECK_CFLAGS=''
	echo "ALTIVEC_CHECK_CFLAGS=" >> Makefile.config
	;;
esac
EOF

	MkCompileC('HAVE_ALTIVEC', '${CFLAGS} ${ALTIVEC_CFLAGS}', '',
	           '#include <altivec.h>' . "\n" . $testCode);
	MkIfTrue('${HAVE_ALTIVEC}');
		MkDefine('HAVE_ALTIVEC_H');
		MkSaveDefine('HAVE_ALTIVEC_H');
	MkElse;
		MkPrintSN('checking for AltiVec (without <altivec.h>)...');

		MkCompileC('HAVE_ALTIVEC', '${CFLAGS} ${ALTIVEC_CFLAGS}', '', $testCode);
		MkIfFalse('${HAVE_ALTIVEC}');
			MkDisableFailed('altivec');
		MkEndif;
		MkSaveUndef('HAVE_ALTIVEC_H');
	MkEndif;
}

sub CMAKE_altivec
{
	my $code = MkCodeCMAKE($testCode);

	return << "EOF";
macro(Check_Altivec)
	set(ORIG_CMAKE_REQUIRED_FLAGS \${CMAKE_REQUIRED_FLAGS})

	set(CMAKE_REQUIRED_FLAGS "\${ORIG_CMAKE_REQUIRED_FLAGS} -maltivec")
	check_c_source_compiles("
$code" HAVE_ALTIVEC)
	if (HAVE_ALTIVEC)
		set(ALTIVEC_CFLAGS "-maltivec")
		BB_Save_MakeVar(ALTIVEC_CFLAGS "\${ALTIVEC_CFLAGS}")
		BB_Save_Define(HAVE_ALTIVEC)
	else()
		set(ALTIVEC_CFLAGS "")
		BB_Save_MakeVar(ALTIVEC_CFLAGS "")
		BB_Save_Undef(HAVE_ALTIVEC)
	endif()

	set(CMAKE_REQUIRED_FLAGS \${ORIG_CMAKE_REQUIRED_FLAGS})
endmacro()

macro(Disable_Altivec)
	set(ALTIVEC_CFLAGS "")
	BB_Save_MakeVar(ALTIVEC_CFLAGS "")
	BB_Save_Undef(HAVE_ALTIVEC)
endmacro()
EOF
}

sub DISABLE_altivec
{
	MkDefine('HAVE_ALTIVEC', 'no') unless $TestFailed;
	MkDefine('HAVE_ALTIVEC_H', 'no');
	MkDefine('ALTIVEC_CFLAGS', '');
	MkSaveUndef('HAVE_ALTIVEC', 'HAVE_ALTIVEC_H');
}

BEGIN
{
	my $n = 'altivec';

	$DESCR{$n}   = 'AltiVec (with <altivec.h>)';
	$TESTS{$n}   = \&TEST_altivec;
	$CMAKE{$n}   = \&CMAKE_altivec;
	$DISABLE{$n} = \&DISABLE_altivec;
	$DEPS{$n}    = 'cc';
	$SAVED{$n}   = 'ALTIVEC_CFLAGS';
}
;1